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List of Wikipedias – Meta

This page contains a list of all 303 languages for which official Wikipedias have been created under the auspices of the Wikimedia Foundation. This list includes 10 Wikipedias that were closed and moved to the Wikimedia Incubator for further development, so there are a current total of 293 active Wikipedias. Content in other languages is being developed at the Wikimedia Incubator; languages which meet certain criteria can get their own wikis.

The table entries are ordered by current article count. Each entry gives the language name in English (linked to the English Wikipedia article for the language), its "local name" (i.e. in the language itself, linked to the article in that language's wiki), the language code used in the wiki's URL address and in interwiki links to it (linked to the local Main Page), as well as statistics on articles, edits, administrators, users, active users, and images (most linked to an appropriate local special page).

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List of Wikipedias - Meta

Germany – Wikipedia

"Federal Republic of Germany" redirects here. For the country from 1949 to 1990, see West Germany.

Coordinates: 51N 9E / 51N 9E / 51; 9

Germany (German: Deutschland German pronunciation: [dtlant]), officially the Federal Republic of Germany (German: Bundesrepublik Deutschland, listen(helpinfo)),[g] is a country in Central and Western Europe, lying between the Baltic and North Seas to the north, and the Alps to the south. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, France to the southwest, and Luxembourg, Belgium and the Netherlands to the west.

Germany includes 16 constituent states, covers an area of 357,386 square kilometres (137,988sqmi),[4] and has a largely temperate seasonal climate. With 83 million inhabitants, it is the second most populous state of Europe after Russia, the most populous state lying entirely in Europe, as well as the most populous member state of the European Union. Germany is a very decentralized country. Its capital and largest metropolis is Berlin, while Frankfurt serves as its financial capital and has the country's busiest airport. Germany's largest urban area is the Ruhr, with its main centres of Dortmund and Essen. The country's other major cities are Hamburg, Munich, Cologne, Stuttgart, Dsseldorf, Leipzig, Dresden, Bremen, Hannover, and Nuremberg.

Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before 100AD. During the Migration Period, the Germanic tribes expanded southward. Beginning in the 10th century, German territories formed a central part of the Holy Roman Empire.[10] During the 16th century, northern German regions became the centre of the Protestant Reformation. After the collapse of the Holy Roman Empire, the German Confederation was formed in 1815. The German revolutions of 184849 resulted in the Frankfurt Parliament establishing major democratic rights.

In 1871, Germany became a nation state when most of the German states (most notably excluding Switzerland and Austria) unified into the Prussian-dominated German Empire. After World War I and the revolution of 191819, the Empire was replaced by the parliamentary Weimar Republic. The Nazi seizure of power in 1933 led to the establishment of a dictatorship, the annexation of Austria, World War II, and the Holocaust. After the end of World War II in Europe and a period of Allied occupation, Austria was re-established as an independent country and two new German states were founded: West Germany, formed from the American, British, and French occupation zones, and East Germany, formed from the Soviet occupation zone. Following the Revolutions of 1989 that ended communist rule in Central and Eastern Europe, the country was reunified on 3 October 1990.[11]

Today, the sovereign state of Germany is a federal parliamentary republic led by a chancellor. It is a great power with a strong economy; it has the world's fourth-largest economy by nominal GDP, and the fifth-largest by PPP. As a global leader in several industrial and technological sectors, it is both the world's third-largest exporter and importer of goods. As a developed country with a very high standard of living, it upholds a social security and universal health care system, environmental protection, and a tuition-free university education.

The Federal Republic of Germany was a founding member of the European Economic Community in 1957 and the European Union in 1993. It is part of the Schengen Area and became a co-founder of the Eurozone in 1999. Germany is a member of the United Nations, NATO, the G7, the G20, and the OECD. Known for its rich cultural history, Germany has been continuously the home of influential and successful artists, philosophers, musicians, film people, sportspeople, entrepreneurs, scientists, engineers, and inventors. Germany has a large number of World Heritage sites and is among the top tourism destinations in the world.

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The discovery of the Mauer 1 mandible shows that ancient humans were present in Germany at least 600,000 years ago.[14] The oldest complete hunting weapons found anywhere in the world were discovered in a coal mine in Schningen between 1994 and 1998 where eight 380,000-year-old wooden javelins of 1.82 to 2.25m (5.97 to 7.38ft) length were unearthed.[15] The Neander Valley was the location where the first ever non-modern human fossil was discovered; the new species of human was called the Neanderthal. The Neanderthal 1 fossils are known to be 40,000 years old. Evidence of modern humans, similarly dated, has been found in caves in the Swabian Jura near Ulm. The finds included 42,000-year-old bird bone and mammoth ivory flutes which are the oldest musical instruments ever found,[16] the 40,000-year-old Ice Age Lion Man which is the oldest uncontested figurative art ever discovered,[17] and the 35,000-year-old Venus of Hohle Fels which is the oldest uncontested human figurative art ever discovered.[18] The Nebra sky disk is a bronze artefact created during the European Bronze Age attributed to a site near Nebra, Saxony-Anhalt. It is part of UNESCO's Memory of the World Programme.[19]

The Germanic tribes are thought to date from the Nordic Bronze Age or the Pre-Roman Iron Age. From southern Scandinavia and north Germany, they expanded south, east and west from the 1st centuryBC, coming into contact with the Celtic tribes of Gaul as well as Iranian, Baltic, and Slavic tribes in Central and Eastern Europe.[20] Under Augustus, Rome began to invade Germania (an area extending roughly from the Rhine to the Ural Mountains). In 9AD, three Roman legions led by Varus were defeated by the Cheruscan leader Arminius. By 100AD, when Tacitus wrote Germania, Germanic tribes had settled along the Rhine and the Danube (the Limes Germanicus), occupying most of the area of modern Germany. However, Austria, Baden Wrttemberg, southern Bavaria, southern Hessen and the western Rhineland had been conquered and incorporated into Roman provinces: Noricum, Raetia, Germania Superior, and Germania Inferior.[21][22][23][24]

In the 3rd century a number of large West Germanic tribes emerged: Alemanni, Franks, Chatti, Saxons, Frisii, Sicambri, and Thuringii. Around 260, the Germanic peoples broke into Roman-controlled lands.[25] After the invasion of the Huns in 375, and with the decline of Rome from 395, Germanic tribes moved farther southwest. Simultaneously several large tribes formed in what is now Germany and displaced or absorbed smaller Germanic tribes. Large areas known since the Merovingian period as Austrasia, Neustria, and Aquitaine were conquered by the Franks who established the Frankish Kingdom, and pushed farther east to subjugate Saxony and Bavaria. Areas of what is today the eastern part of Germany were inhabited by Western Slavic tribes of Sorbs, Veleti and the Obotritic confederation.[21]

In 800, the Frankish king Charlemagne was crowned emperor and founded the Carolingian Empire, which was later divided in 843 among his heirs.[26] Following the break up of the Frankish Realm, for 900 years, the history of Germany was intertwined with the history of the Holy Roman Empire,[27] which subsequently emerged from the eastern portion of Charlemagne's original empire. The territory initially known as East Francia stretched from the Rhine in the west to the Elbe River in the east and from the North Sea to the Alps.[26] The Ottonian rulers (9191024) consolidated several major duchies and the German king Otto I was crowned Holy Roman Emperor of these regions in 962. In 996 Gregory V became the first German Pope, appointed by his cousin Otto III, whom he shortly after crowned Holy Roman Emperor. The Holy Roman Empire absorbed northern Italy and Burgundy under the reign of the Salian emperors (10241125), although the emperors lost power through the Investiture controversy.[28]

In the 12th century, under the Hohenstaufen emperors (11381254), German princes increased their influence further south and east into territories inhabited by Slavs; they encouraged German settlement in these areas, called the eastern settlement movement (Ostsiedlung). Members of the Hanseatic League, which included mostly north German cities and towns, prospered in the expansion of trade.[29] In the south, the Greater Ravensburg Trade Corporation (Groe Ravensburger Handelsgesellschaft) served a similar function. The edict of the Golden Bull issued in 1356 by Emperor Charles IV provided the basic constitutional structure of the Empire and codified the election of the emperor by seven prince-electors who ruled some of the most powerful principalities and archbishoprics.[30]

Population declined in the first half of the 14th century, starting with the Great Famine in 1315, followed by the Black Death of 134850.[31] Despite the decline, however, German artists, engineers, and scientists developed a wide array of techniques similar to those used by the Italian artists and designers of the time who flourished in such merchant city-states as Venice, Florence and Genoa. Artistic and cultural centres throughout the German states produced such artists as the Augsburg painters Hans Holbein and his son, and Albrecht Drer. Johannes Gutenberg introduced moveable-type printing to Europe, a development that laid the basis for the spread of learning to the masses.[32]

In 1517, the Wittenberg priest Martin Luther nailed the Ninety-Five Theses to the church door, challenging the practice of selling of indulgences. He was subsequently excommunicated in the papal bull Exsurge Domine in 1520, and his followers were condemned in the 1521 Diet of Worms, which divided Western Christianity. In 1555, the Peace of Augsburg tolerated the "Evangelical" faith (now called Lutheranism) as an acceptable alternative to Catholicism, but also decreed that the faith of the prince was to be the faith of his subjects, a principle called cuius regio, eius religio. The agreement at Augsburg failed to address other religious creed: for example, the Reformed faith was still considered a heresy and the principle did not address the possible conversion of an ecclesiastic ruler, such as happened in Electorate of Cologne in 1583. However, in practice Calvinists were given protection under the Augsburg Confession Variata modified upon request by Phillip Melancthon.

From the Cologne War until the end of the Thirty Years' Wars (16181648), religious conflict devastated German lands.[33] The latter reduced the overall population of the German states by about 30 per cent, and in some places, up to 80 per cent.[34] The Peace of Westphalia ended religious warfare among the Imperial Estates of the Holy Roman Empire.[33] Their mostly German-speaking rulers were able to choose either Roman Catholicism, Lutheranism, or the Reformed faith as their official religion after 1648.[35]

In the 18th century, the Holy Roman Empire consisted of approximately 1,800 territories.[36] The elaborate legal system initiated by a series of Imperial Reforms (approximately 14501555) created the Imperial Estates and provided for considerable local autonomy among ecclesiastical, secular, and hereditary states, reflected in the Imperial Diet. The House of Habsburg held the imperial crown from 1438 until the death of Charles VI in 1740. Having no male heirs, he had convinced the Electors to retain Habsburg hegemony in the office of the emperor by agreeing to the Pragmatic Sanction of 1713. This was finally settled through the War of Austrian Succession; in the Treaty of Aix-la-Chapelle, Charles VI's daughter Maria Theresa ruled the Empire as Empress Consort when her husband, Francis I, became Holy Roman Emperor. From 1740, the dualism between the Austrian Habsburg Monarchy and the Kingdom of Prussia dominated the German history.

In 1772, then again in 1793 and 1795, the two dominant German states of Prussia and Austria, along with the Russian Empire, agreed to the Partitions of Poland; dividing among themselves the lands of the PolishLithuanian Commonwealth. As a result of the partitions, millions of Polish speaking inhabitants fell under the rule of the two German monarchies. However, the annexed territories though incorporated into the Kingdom of Prussia and the Habsburg Realm, were not legally considered as a part of the Holy Roman Empire.[37][38] During the period of the French Revolutionary Wars, along with the arrival of the Napoleonic era and the subsequent final meeting of the Imperial Diet, most of the secular Free Imperial Cities were annexed by dynastic territories; the ecclesiastical territories were secularised and annexed. In 1806 the Imperium was dissolved; many German states, particularly the Rhineland states, fell under the influence of France. Until 1815, France, Russia, Prussia and the Habsburgs (Austria) competed for hegemony in the German states during the Napoleonic Wars.[39]

Following the fall of Napoleon, the Congress of Vienna (convened in 1814) founded the German Confederation (Deutscher Bund), a loose league of 39 sovereign states. The appointment of the Emperor of Austria as the permanent president of the Confederation reflected the Congress's failure to accept Prussia's rising influence among the German states, and acerbated the long-standing competition between the Hohenzollern and Habsburg interests. Disagreement within restoration politics partly led to the rise of liberal movements, followed by new measures of repression by Austrian statesman Metternich. The Zollverein, a tariff union, furthered economic unity in the German states.[40]

National and liberal ideals of the French Revolution gained increasing support among many, especially young, Germans. The Hambach Festival in May 1832 was a main event in support of German unity, freedom and democracy. In the light of a series of revolutionary movements in Europe, which established a republic in France, intellectuals and commoners started the Revolutions of 1848 in the German states. King Frederick William IV of Prussia was offered the title of Emperor, but with a loss of power; he rejected the crown and the proposed constitution, leading to a temporary setback for the movement.[41]

King William I appointed Otto von Bismarck as the new Minister President of Prussia in 1862. Bismarck successfully concluded war on Denmark in 1864, which promoted German over Danish interests in the Jutland peninsula. The subsequent (and decisive) Prussian victory in the Austro-Prussian War of 1866 enabled him to create the North German Confederation (Norddeutscher Bund) which excluded Austria from the federation's affairs. After the French defeat in the Franco-Prussian War, the German princes proclaimed the founding of the German Empire in 1871 at Versailles, uniting all the scattered parts of Germany except Austria and the German-speaking parts of Switzerland. Prussia was the dominant constituent state of the new empire; the Hohenzollern King of Prussia ruled as its concurrent Emperor, and Berlin became its capital.[41]

In the Grnderzeit period following the unification of Germany, Bismarck's foreign policy as Chancellor of Germany under Emperor William I secured Germany's position as a great nation by forging alliances, isolating France by diplomatic means, and avoiding war. Under Wilhelm II, Germany, like other European powers, took an imperialistic course, leading to friction with neighbouring countries. Most alliances in which Germany had previously been involved were not renewed. This resulted in the creation of a dual alliance with the multinational realm of Austria-Hungary, promoting at least benevolent neutrality if not outright military support. Subsequently, the Triple Alliance of 1882 included Italy, completing a Central European geographic alliance that illustrated German, Austrian and Italian fears of incursions against them by France and/or Russia. Similarly, Britain, France and Russia also concluded alliances that would protect them against Habsburg interference with Russian interests in the Balkans or German interference against France.[42]

At the Berlin Conference in 1884, Germany claimed several colonies including German East Africa, German South West Africa, Togoland, and Kamerun.[43] Later, Germany further expanded its colonial empire to include German New Guinea, German Micronesia and German Samoa in the Pacific, and Kiautschou Bay in China. In what became known as the "First Genocide of the Twentieth-Century", between 1904 and 1907, the German colonial government in South West Africa (present-day Namibia) ordered the annihilation of the local Herero and Namaqua peoples, as a punitive measure for an uprising against German colonial rule. In total, around 100,000 people80% of the Herero and 50% of the Namaquaperished from imprisonment in concentration camps, where the majority died of disease, abuse, and exhaustion, or from dehydration and starvation in the countryside after being deprived of food and water.[44][45]

The assassination of Austria's crown prince on 28 June 1914 provided the pretext for the Austrian Empire to attack Serbia and trigger World War I. After four years of warfare, in which approximately two million German soldiers were killed,[46] a general armistice ended the fighting on 11 November, and German troops returned home. In the German Revolution (November 1918), Emperor Wilhelm II and all German ruling princes abdicated their positions and responsibilities. Germany's new political leadership signed the Treaty of Versailles in 1919. In this treaty, Germany, as part of the Central Powers, accepted defeat by the Allies in one of the bloodiest conflicts of all time. Germans perceived the treaty as humiliating and unjust and it was later seen by historians as influential in the rise of Adolf Hitler.[47][48][49] After the defeat in the First World War, Germany lost around 13% of its European territory (areas predominantly inhabited by ethnic Polish, French and Danish populations, which were lost following the Greater Poland Uprising, the return of Alsace-Lorraine and the Schleswig plebiscites), and all of its colonial possessions in Africa and the South Sea.[50]

Germany was declared a federal republic at the beginning of the German Revolution in November 1918, with 18 federated states in 1925.

On 11 August 1919 President Friedrich Ebert signed the democratic Weimar Constitution.[51] In the subsequent struggle for power, the radical-left Communists seized power in Bavaria, but conservative elements in other parts of Germany attempted to overthrow the Republic in the Kapp Putsch. It was supported by parts of the Reichswehr (military) and other conservative, nationalistic and monarchist factions. After a tumultuous period of bloody street fighting in the major industrial centres, the occupation of the Ruhr by Belgian and French troops and the rise of inflation culminating in the hyperinflation of 192223, a debt restructuring plan and the creation of a new currency in 1924 ushered in the Golden Twenties, an era of increasing artistic innovation and liberal cultural life. Historians describe the period between 1924 and 1929 as one of "partial stabilisation."[52] The worldwide Great Depression hit Germany in 1929. After the federal election of 1930, Chancellor Heinrich Brning's government was enabled by President Paul von Hindenburg to act without parliamentary approval. Brning's government pursued a policy of fiscal austerity and deflation which caused high unemployment of nearly 30% by 1932.[53]

The Nazi Party led by Adolf Hitler won the special federal election of 1932. After a series of unsuccessful cabinets, Hindenburg appointed Hitler as Chancellor of Germany on 30 January 1933.[54] After the Reichstag fire, a decree abrogated basic civil rights and within weeks the first Nazi concentration camp at Dachau opened.[55][56] The Enabling Act of 1933 gave Hitler unrestricted legislative power; subsequently, his government established a centralised totalitarian state, withdrew from the League of Nations following a national referendum, and began military rearmament.[57]

Using deficit spending, a government-sponsored programme for economic renewal focused on public works projects. In public work projects of 1934, 1.7million Germans immediately were put to work, which gave them an income and social benefits.[58] The most famous of the projects was the high speed roadway, the Reichsautobahn, known as the German autobahns.[59] Other capital construction projects included hydroelectric facilities such as the Rur Dam, water supplies such as Zillierbach Dam, and transportation hubs such as Zwickau Hauptbahnhof.[60] Over the next five years, unemployment plummeted and average wages both per hour and per week rose.[61]

In 1935, the regime withdrew from the Treaty of Versailles and introduced the Nuremberg Laws which targeted Jews and other minorities. Germany also reacquired control of the Saar in 1935,[62] remilitarised the Rhineland in 1936, annexed Austria in 1938, annexed the Sudetenland in 1938 with the Munich Agreement and in direct violation of the agreement occupied Czechoslovakia with the proclamation of the Protectorate of Bohemia and Moravia in March 1939.

Kristallnacht, or the "Night of Broken Glass", saw the burning of hundreds of synagogues, the destruction of thousands of Jewish businesses, and the arrest of around 30,000 Jewish men by Nazi forces inside Germany. Many Jewish women were arrested and placed in jails and a curfew was placed on the Jewish people in Germany.[63]

In August 1939, Hitler's government negotiated and signed the MolotovRibbentrop pact that divided Eastern Europe into German and Soviet spheres of influence. Following the agreement, on 1 September 1939, Germany invaded Poland, marking the beginning of World War II in Europe.[64][65]

In response to Hitler's actions, two days later, on 3 September, after a British ultimatum to Germany to cease military operations was ignored, Britain and France declared war on Germany.[66] In the spring of 1940, Germany conquered Denmark and Norway, the Netherlands, Belgium, Luxembourg, and France forcing the French government to sign an armistice after German troops occupied most of the country. The British repelled German air attacks in the Battle of Britain in the same year. In 1941, German troops invaded Yugoslavia, Greece and the Soviet Union. By 1942, Germany and other Axis powers controlled most of continental Europe and North Africa, but following the Soviet Union's victory at the Battle of Stalingrad, the allies' reconquest of North Africa and invasion of Italy in 1943, German forces suffered repeated military defeats.[64] In June 1944, the Western allies landed in France and the Soviets pushed into Eastern Europe. By late 1944, the Western allies had entered Germany despite one final German counter offensive in the Ardennes Forest. Following Hitler's suicide during the Battle of Berlin, German armed forces surrendered on 8 May 1945, ending World War II in Europe.[67] After World War II, former members of the Nazi regime were tried for war crimes at the Nuremberg trials.[68][69]

In what later became known as The Holocaust, the German government persecuted minorities and used a network of concentration and death camps across Europe to conduct a genocide of what they considered to be inferior peoples. In total, over 10 million civilians were systematically murdered, including 6million Jews, between 220,000 and 1,500,000 Romani, 275,000 persons with disabilities, thousands of Jehovah's Witnesses, thousands of homosexuals, and hundreds of thousands of members of the political and religious opposition from Germany, and occupied countries (Nacht und Nebel).[70] Nazi policies in German occupied countries resulted in the deaths of 2.7million Poles,[71] 1.3million Ukrainians, 1 million Belarusians[72] and an estimated 3.5 million Soviet war prisoners.[72][68] In addition, the Nazi regime abducted approximately 12 million people from across the German occupied Europe for use as slave labour in German industry.[73] German military war casualties have been estimated at 5.3million,[74] and around 900,000 German civilians died; 400,000 from Allied bombing, and 500,000 in the course of the Soviet invasion from the east.[75] Around 12million ethnic Germans were expelled from across Eastern Europe. Germany lost roughly one-quarter of its pre-war territory.[11] Strategic bombing and land warfare destroyed many cities and cultural heritage sites.

After Nazi Germany surrendered, the Allies partitioned Berlin and Germany's remaining territory into four military occupation zones. The western sectors, controlled by France, the United Kingdom, and the United States, were merged on 23 May 1949 to form the Federal Republic of Germany (Bundesrepublik Deutschland); on 7 October 1949, the Soviet Zone became the German Democratic Republic (Deutsche Demokratische Republik). They were informally known as West Germany and East Germany. East Germany selected East Berlin as its capital, while West Germany chose Bonn as a provisional capital, to emphasise its stance that the two-state solution was an artificial and temporary status quo.[76]

West Germany was established as a federal parliamentary republic with a "social market economy". Starting in 1948 West Germany became a major recipient of reconstruction aid under the Marshall Plan and used this to rebuild its industry.[77] Konrad Adenauer was elected the first Federal Chancellor (Bundeskanzler) of Germany in 1949 and remained in office until 1963. Under his and Ludwig Erhard's leadership, the country enjoyed prolonged economic growth beginning in the early 1950s, that became known as an "economic miracle" (Wirtschaftswunder).[78] The Federal Republic of Germany joined NATO in 1955 and was a founding member of the European Economic Community in 1957.

East Germany was an Eastern Bloc state under political and military control by the USSR via occupation forces and the Warsaw Pact. Although East Germany claimed to be a democracy, political power was exercised solely by leading members (Politbro) of the communist-controlled Socialist Unity Party of Germany, supported by the Stasi, an immense secret service controlling many aspects of the society.[79] A Soviet-style command economy was set up and the GDR later became a Comecon state.[80] While East German propaganda was based on the benefits of the GDR's social programmes and the alleged constant threat of a West German invasion, many of its citizens looked to the West for freedom and prosperity.[81]

The Berlin Wall, rapidly built on 13 August 1961 prevented East German citizens from escaping to West Germany, eventually becoming a symbol of the Cold War.[41][82] Ronald Reagan's "Tear down this wall!" speech at the Wall on 12 June 1987 echoed John F. Kennedy's Ich bin ein Berliner speech of 26 June 1963. The fall of the Wall in 1989 became a symbol of the Fall of Communism, the Dissolution of the Soviet Union, German Reunification and Die Wende.[83]

Tensions between East and West Germany were reduced in the early 1970s by Chancellor Willy Brandt's Ostpolitik. In summer 1989, Hungary decided to dismantle the Iron Curtain and open the borders, causing the emigration of thousands of East Germans to West Germany via Hungary. This had devastating effects on the GDR, where regular mass demonstrations received increasing support. The East German authorities eased the border restrictions, allowing East German citizens to travel to the West; originally intended to help retain East Germany as a state, the opening of the border actually led to an acceleration of the Wende reform process. This culminated in the Two Plus Four Treaty a year later on 12 September 1990, under which the four occupying powers renounced their rights under the Instrument of Surrender, and Germany regained full sovereignty. This permitted German reunification on 3 October 1990, with the accession of the five re-established states of the former GDR.[41]

The united Germany is considered to be the enlarged continuation of the Federal Republic of Germany and not a successor state. As such, it retained all of West Germany's memberships in international organisations.[85] Based on the Berlin/Bonn Act, adopted in 1994, Berlin once again became the capital of the reunified Germany, while Bonn obtained the unique status of a Bundesstadt (federal city) retaining some federal ministries.[86] The relocation of the government was completed in 1999.[87] Following the 1998 elections, SPD politician Gerhard Schrder became the first Chancellor of a redgreen coalition with the Alliance '90/The Greens party. Among the major projects of the two Schrder legislatures was the Agenda 2010 to reform the labour market to become more flexible and reduce unemployment.

The modernisation and integration of the eastern German economy is a long-term process scheduled to last until the year 2019, with annual transfers from west to east amounting to roughly $80billion.[88]

Since reunification, Germany has taken a more active role in the European Union. Together with its European partners Germany signed the Maastricht Treaty in 1992, established the Eurozone in 1999, and signed the Lisbon Treaty in 2007.[89] Germany sent a peacekeeping force to secure stability in the Balkans and sent a force of German troops to Afghanistan as part of a NATO effort to provide security in that country after the ousting of the Taliban.[90] These deployments were controversial since Germany is bound by domestic law only to deploy troops for defence roles.[91]

In the 2005 elections, Angela Merkel became the first female chancellor of Germany as the leader of a grand coalition.[41] In 2009 the German government approved a 50billion economic stimulus plan to protect several sectors from a downturn.[92]

In 2009, a liberal-conservative coalition under Merkel assumed leadership of the country. In 2013, a grand coalition was established in a Third Merkel cabinet. Among the major German political projects of the early 21st century are the advancement of European integration, the energy transition (Energiewende) for a sustainable energy supply, the "Debt Brake" for balanced budgets, measures to increase the fertility rate significantly (pronatalism), and high-tech strategies for the future transition of the German economy, summarised as Industry 4.0.[93]

Germany was affected by the European migrant crisis in 2015 as it became the final destination of choice for many asylum seekers from Africa and the Middle East entering the EU. The country took in over a million refugees and migrants and developed a quota system which redistributed migrants around its federal states based on their tax income and existing population density.[94]

Germany is in Western and Central Europe, with Denmark bordering to the north, Poland and the Czech Republic to the east, Austria to the southeast, Switzerland to the south-southwest, France, Luxembourg and Belgium lie to the west, and the Netherlands to the northwest. It lies mostly between latitudes 47 and 55 N and longitudes 5 and 16 E. Germany is also bordered by the North Sea and, at the north-northeast, by the Baltic Sea. With Switzerland and Austria, Germany also shares a border on the fresh-water Lake Constance, the third largest lake in Central Europe.[95] German territory covers 357,021km2 (137,847sqmi), consisting of 349,223km2 (134,836sqmi) of land and 7,798km2 (3,011sqmi) of water. It is the seventh largest country by area in Europe and the 64th largest in the world.[96]

Elevation ranges from the mountains of the Alps (highest point: the Zugspitze at 2,962 metres or 9,718 feet) in the south to the shores of the North Sea (Nordsee) in the northwest and the Baltic Sea (Ostsee) in the northeast. The forested uplands of central Germany and the lowlands of northern Germany (lowest point: Wilstermarsch at 3.54 metres or 11.6 feet below sea level) are traversed by such major rivers as the Rhine, Danube and Elbe. Germany's alpine glaciers are experiencing deglaciation. Significant natural resources include iron ore, coal, potash, timber, lignite, uranium, copper, natural gas, salt, nickel, arable land and water.[96]

Most of Germany has a temperate seasonal climate dominated by humid westerly winds. The country is situated in between the oceanic Western European and the continental Eastern European climate. The climate is moderated by the North Atlantic Drift, the northern extension of the Gulf Stream. This warmer water affects the areas bordering the North Sea; consequently in the northwest and the north the climate is oceanic. Germany gets an average of 789mm (31in) of precipitation per year; there is no consistent dry season. Winters are cool and summers tend to be warm: temperatures can exceed 30C (86F).[98]

The east has a more continental climate: winters can be very cold and summers very warm, and longer dry periods can occur. Central and southern Germany are transition regions which vary from moderately oceanic to continental. In addition to the maritime and continental climates that predominate over most of the country, the Alpine regions in the extreme south and, to a lesser degree, some areas of the Central German Uplands have a mountain climate, with lower temperatures and more precipitation.[98]

Though the German climate is rarely extreme, there are occasional spikes of cold or heat. Winter temperatures can sometimes drop to two-digit negative temperatures for a few days in a row. Conversely, summer can see periods of very high temperatures for a week or two. The recorded extremes are a maximum of 40.3C (104.5F) (July 2015, in Kitzingen), and a minimum of 37.8C (36.0F) (February 1929, in Pfaffenhofen an der Ilm).[99]

The territory of Germany can be subdivided into two ecoregions: European-Mediterranean montane mixed forests and Northeast-Atlantic shelf marine.[100] As of 2008[update] the majority of Germany is covered by either arable land (34%) or forest and woodland (30.1%); only 13.4% of the area consists of permanent pastures, 11.8% is covered by settlements and streets.[101]

Plants and animals include those generally common to Central Europe. Beeches, oaks, and other deciduous trees constitute one-third of the forests; conifers are increasing as a result of reforestation. Spruce and fir trees predominate in the upper mountains, while pine and larch are found in sandy soil. There are many species of ferns, flowers, fungi, and mosses. Wild animals include roe deer, wild boar, mouflon (a subspecies of wild sheep), fox, badger, hare, and small numbers of the Eurasian beaver.[102] The blue cornflower was once a German national symbol.[103]

The 16 national parks in Germany include the Jasmund National Park, the Vorpommern Lagoon Area National Park, the Mritz National Park, the Wadden Sea National Parks, the Harz National Park, the Hainich National Park, the Black Forest National Park, the Saxon Switzerland National Park, the Bavarian Forest National Park and the Berchtesgaden National Park. In addition, there are 15 Biosphere Reserves, as well as 98 nature parks. More than 400 registered zoos and animal parks operate in Germany, which is believed to be the largest number in any country.[104] The Berlin Zoo, opened in 1844, is the oldest zoo in Germany, and presents the most comprehensive collection of species in the world.[105]

Germany has a number of large cities. There are 11 officially recognised metropolitan regions in Germany. 34 cities have been identified as regiopolis. The largest conurbation is the Rhine-Ruhr region (11.7million in 2008[update]), including Dsseldorf (the capital of North Rhine-Westphalia), Cologne, Bonn, Dortmund, Essen, Duisburg, and Bochum.[106]

Germany is a federal, parliamentary, representative democratic republic. The German political system operates under a framework laid out in the 1949 constitution known as the Grundgesetz (Basic Law). Amendments generally require a two-thirds majority of both the Bundestag and the Bundesrat; the fundamental principles of the constitution, as expressed in the articles guaranteeing human dignity, the separation of powers, the federal structure, and the rule of law are valid in perpetuity.[107]

The president, Frank-Walter Steinmeier (19 March 2017present), is the head of state and invested primarily with representative responsibilities and powers. He is elected by the Bundesversammlung (federal convention), an institution consisting of the members of the Bundestag and an equal number of state delegates. The second-highest official in the German order of precedence is the Bundestagsprsident (President of the Bundestag), who is elected by the Bundestag and responsible for overseeing the daily sessions of the body. The third-highest official and the head of government is the Chancellor, who is appointed by the Bundesprsident after being elected by the Bundestag.[41]

The Chancellor, Angela Merkel (22 November 2005present), is the head of government and exercises executive power through their Cabinet, similar to the role of a Prime Minister in other parliamentary democracies. Federal legislative power is vested in the parliament consisting of the Bundestag (Federal Diet) and Bundesrat (Federal Council), which together form the legislative body. The Bundestag is elected through direct elections, by proportional representation (mixed-member).[96] The members of the Bundesrat represent the governments of the sixteen federated states and are members of the state cabinets.[41]

Since 1949, the party system has been dominated by the Christian Democratic Union and the Social Democratic Party of Germany. So far every chancellor has been a member of one of these parties. However, the smaller liberal Free Democratic Party (in parliament from 1949 to 2013 and again since 2017) and the Alliance '90/The Greens (in parliament since 1983) have also played important roles.[108] Since 2005, the left-wing populist party The Left, formed through the merger of two former parties, has been a staple in the German Bundestag though they have never been part of the federal government. In the German federal election, 2017, the right-wing populist Alternative for Germany gained enough votes to attain representation in the parliament for the first time.

The debt-to-GDP ratio of Germany had its peak in 2010 when it stood at 80.3% and decreased since then.[109] According to Eurostat, the government gross debt of Germany amounts to 2,152.0billion or 71.9% of its GDP in 2015.[110] The federal government achieved a budget surplus of 12.1billion ($13.1billion) in 2015.[111] Germany's credit rating by credit rating agencies Standard & Poor's, Moody's and Fitch Ratings stands at the highest possible rating AAA with a stable outlook in 2016.[112]

Germany has a civil law system based on Roman law with some references to Germanic law. The Bundesverfassungsgericht (Federal Constitutional Court) is the German Supreme Court responsible for constitutional matters, with power of judicial review.[41][113] Germany's supreme court system, called Oberste Gerichtshfe des Bundes, is specialised: for civil and criminal cases, the highest court of appeal is the inquisitorial Federal Court of Justice, and for other affairs the courts are the Federal Labour Court, the Federal Social Court, the Federal Finance Court and the Federal Administrative Court.

Criminal and private laws are codified on the national level in the Strafgesetzbuch and the Brgerliches Gesetzbuch respectively. The German penal system seeks the rehabilitation of the criminal and the protection of the public.[114] Except for petty crimes, which are tried before a single professional judge, and serious political crimes, all charges are tried before mixed tribunals on which lay judges (Schffen) sit side by side with professional judges.[115][116] Many of the fundamental matters of administrative law remain in the jurisdiction of the states.

Germany has a low murder rate with 0.9 murders per 100,000 in 2014.[117]

Germany comprises sixteen federal states which are collectively referred to as Bundeslnder.[118] Each state has its own state constitution,[119] and is largely autonomous in regard to its internal organisation. Two of the states are city-states consisting of just one city: the national capital of Berlin, and Hamburg. The state of Bremen consists of two cities that are separated from each other by the state of Lower Saxony: Bremen and Bremerhaven.

Because of the differences in size and population, the subdivisions of the states vary. For regional administrative purposes four states, namely Baden-Wrttemberg, Bavaria, Hesse and North Rhine-Westphalia, consist of a total of 19 Government Districts (Regierungsbezirke). As of 2017[update] Germany is divided into 401 districts (Kreise) at a municipal level; these consist of 294 rural districts and 107 urban districts.[120]

Germany has a network of 227 diplomatic missions abroad[123] and maintains relations with more than 190 countries.[124] As of 2011[update], Germany is the largest contributor to the budget of the European Union (providing 20%)[125] and the third largest contributor to the UN (providing 8%).[126] Germany is a member of NATO, the OECD, the G8, the G20, the World Bank and the IMF. It has played an influential role in the European Union since its inception and has maintained a strong alliance with France and all neighbouring countries since 1990. Germany promotes the creation of a more unified European political, economic and security apparatus.[127][128]

The development policy of Germany is an independent area of foreign policy. It is formulated by the Federal Ministry for Economic Cooperation and Development and carried out by the implementing organisations. The German government sees development policy as a joint responsibility of the international community.[129] It was the world's third biggest aid donor in 2009 after the United States and France.[130][131]

In 1999, Chancellor Gerhard Schrder's government defined a new basis for German foreign policy by taking part in the NATO decisions surrounding the Kosovo War and by sending German troops into combat for the first time since 1945.[132] The governments of Germany and the United States are close political allies.[41] Cultural ties and economic interests have crafted a bond between the two countries resulting in Atlanticism.[133]

Germany's military, the Bundeswehr, is organised into Heer (Army and special forces KSK), Marine (Navy), Luftwaffe (Air Force), Bundeswehr Joint Medical Service and Streitkrftebasis (Joint Support Service) branches. In absolute terms, German military expenditure is the 9th highest in the world.[134] In 2015, military spending was at 32.9billion, about 1.2% of the country's GDP, well below the NATO target of 2%.[135]

As of 2017[update] the Bundeswehr employed roughly 178,000 service members, including about 9,000 volunteers.[136] Reservists are available to the Armed Forces and participate in defence exercises and deployments abroad.[137] Since 2001 women may serve in all functions of service without restriction.[138] About 19,000 female soldiers are on active duty. According to SIPRI, Germany was the fifth largest exporter of major arms in the world from 2012 to 2016.[139]

In peacetime, the Bundeswehr is commanded by the Minister of Defence. In state of defence, the Chancellor would become commander-in-chief of the Bundeswehr.[140]

The role of the Bundeswehr is described in the Constitution of Germany as defensive only. But after a ruling of the Federal Constitutional Court in 1994 the term "defence" has been defined to not only include protection of the borders of Germany, but also crisis reaction and conflict prevention, or more broadly as guarding the security of Germany anywhere in the world. As of 2017[update], the German military has about 3,600 troops stationed in foreign countries as part of international peacekeeping forces, including about 1,200 supporting operations against Daesh, 980 in the NATO-led Resolute Support Mission in Afghanistan, and 800 in Kosovo.[141]

Until 2011, military service was compulsory for men at age 18, and conscripts served six-month tours of duty; conscientious objectors could instead opt for an equal length of Zivildienst (civilian service), or a six-year commitment to (voluntary) emergency services like a fire department or the Red Cross. In 2011 conscription was officially suspended and replaced with a voluntary service.[142][143]

Germany has a social market economy with a highly skilled labour force, a large capital stock, a low level of corruption,[144] and a high level of innovation.[145] It is the world's third largest exporter of goods,[146] and has the largest national economy in Europe which is also the world's fourth largest by nominal GDP[147] and the fifth one by PPP.[148]

The service sector contributes approximately 71% of the total GDP (including information technology), industry 28%, and agriculture 1%.[96] The unemployment rate published by Eurostat amounts to 4.7% in January 2015, which is the lowest rate of all 28 EU member states.[149] With 7.1% Germany also has the lowest youth unemployment rate of all EU member states.[149] According to the OECD Germany has one of the highest labour productivity levels in the world.[150]

Germany is part of the European single market which represents more than 508 million consumers. Several domestic commercial policies are determined by agreements among European Union (EU) members and by EU legislation. Germany introduced the common European currency, the Euro in 2002.[151][152] It is a member of the Eurozone which represents around 340 million citizens. Its monetary policy is set by the European Central Bank, which is headquartered in Frankfurt, the financial centre of continental Europe.

Being home to the modern car, the automotive industry in Germany is regarded as one of the most competitive and innovative in the world,[153] and is the fourth largest by production.[154] The top 10 exports of Germany are vehicles, machinery, chemical goods, electronic products, electrical equipments, pharmaceuticals, transport equipments, basic metals, food products, and rubber and plastics.[155]

Germany also has a strong cooperative with sector, with two of the largest retail cooperatives in Europe located in the country[156].

Of the world's 500 largest stock-market-listed companies measured by revenue in 2014, the Fortune Global 500, 28 are headquartered in Germany. 30 major Germany-based companies are included in the DAX, the prime German stock market index which is operated by Frankfurt Stock Exchange of Deutsche Brse. Well-known international brands include Mercedes-Benz, BMW, SAP, Volkswagen, Audi, Siemens, Allianz, Adidas, Porsche, Deutsche Bahn, Deutsche Bank, Bosch and Babelsberg.[157]

Germany is recognised for its large portion of specialised small and medium enterprises, known as the Mittelstand model. More than 1,000 of these companies are global market leaders in their segment and are labelled Hidden Champions.[158] Berlin developed a thriving, cosmopolitan hub for startup companies and became the leading location for venture capital funded firms in the European Union.[159]

The list includes the largest German companies by revenue in 2015:[160]

With its central position in Europe, Germany is a transport hub for the continent.[161] Like its neighbours in Western Europe, Germany's road network is among the densest in the world.[162] The motorway (Autobahn) network ranks as the third-largest worldwide in length and is known for its lack of a general speed limit.[163][164]Germany has established a polycentric network of high-speed trains. The InterCityExpress or ICE network of the Deutsche Bahn serves major German cities as well as destinations in neighbouring countries with speeds up to 300km/h (190mph).[165] The German railways are subsidised by the government, receiving 17.0billion in 2014.[166]

The largest German airports are Frankfurt Airport and Munich Airport, both hubs of Lufthansa. Other major airports include Berlin Tegel, Dsseldorf, Berlin Schnefeld, Hamburg, Cologne/Bonn and Leipzig/Halle.[167] The Port of Hamburg is one of the top twenty largest container ports in the world.[168]

In 2008[update], Germany was the world's sixth-largest consumer of energy,[169] and 60% of its primary energy was imported.[170] In 2014, energy sources were: oil (35.0%); coal, including lignite (24.6%); natural gas (20.5%); nuclear (8.1%); hydro-electric and renewable sources (11.1%).[171] The government and the nuclear power industry agreed to phase out all nuclear power plants by 2021.[172] It also enforces energy conservation, green technologies, emission reduction activities,[173] and aims to meet the country's electricity demands using 40% renewable sources by 2020.

Germany is committed to the Paris Agreement and several other treaties promoting biodiversity, low emission standards, water management, and the renewable energy commercialisation.[174] The country's household recycling rate is among the highest in the worldat around 65%.[175] Nevertheless, the country's total greenhouse gas emissions were the highest in the EU in 2010[update].[176] The German energy transition (Energiewende) is the recognised move to a sustainable economy by means of energy efficiency and renewable energy.[177]

Germany is a global leader in science and technology as its achievements in the fields of science and technology have been significant. Research and development efforts form an integral part of the economy.[178] The Nobel Prize has been awarded to 108 German laureates.[179] It produces the second highest number of graduates in science and engineering (31%) after South Korea.[180] In the beginning of the 20th century, German laureates had more awards than those of any other nation, especially in the sciences (physics, chemistry, and physiology or medicine).[181][182]

Notable German physicists before the 20th century include Hermann von Helmholtz, Joseph von Fraunhofer and Gabriel Daniel Fahrenheit, among others. Albert Einstein introduced the special relativity and general relativity theories for light and gravity in 1905 and 1915 respectively. Along with Max Planck, he was instrumental in the introduction of quantum mechanics, in which Werner Heisenberg and Max Born later made major contributions.[183] Wilhelm Rntgen discovered X-rays.[184] Otto Hahn was a pioneer in the fields of radiochemistry and discovered nuclear fission, while Ferdinand Cohn and Robert Koch were founders of microbiology. Numerous mathematicians were born in Germany, including Carl Friedrich Gauss, David Hilbert, Bernhard Riemann, Gottfried Leibniz, Karl Weierstrass, Hermann Weyl, Felix Klein and Emmy Noether.

Germany has been the home of many famous inventors and engineers, including Hans Geiger, the creator of the Geiger counter; and Konrad Zuse, who built the first fully automatic digital computer.[185] Such German inventors, engineers and industrialists as Count Ferdinand von Zeppelin,[186] Otto Lilienthal, Gottlieb Daimler, Rudolf Diesel, Hugo Junkers and Karl Benz helped shape modern automotive and air transportation technology. German institutions like the German Aerospace Center (DLR) are the largest contributor to ESA. Aerospace engineer Wernher von Braun developed the first space rocket at Peenemnde and later on was a prominent member of NASA and developed the Saturn V Moon rocket. Heinrich Rudolf Hertz's work in the domain of electromagnetic radiation was pivotal to the development of modern telecommunication.[187]

Research institutions in Germany include the Max Planck Society, the Helmholtz Association, the Fraunhofer Society and the Leibniz Association. The Wendelstein 7-X in Greifswald hosts a facility in the research of fusion power for instance.[188] The Gottfried Wilhelm Leibniz Prize is granted to ten scientists and academics every year. With a maximum of 2.5million per award it is one of the highest endowed research prizes in the world.[189]

Germany is the seventh most visited country in the world,[190] with a total of 407 million overnights during 2012.[191] This number includes 68.83million nights by foreign visitors. In 2012, over 30.4million international tourists arrived in Germany. Berlin has become the third most visited city destination in Europe.[192] Additionally, more than 30% of Germans spend their holiday in their own country, with the biggest share going to Mecklenburg-Vorpommern. Domestic and international travel and tourism combined directly contribute over EUR43.2billion to German GDP. Including indirect and induced impacts, the industry contributes 4.5% of German GDP and supports 2 million jobs (4.8% of total employment).[193]

Germany is well known for its diverse tourist routes, such as the Romantic Road, the Wine Route, the Castle Road, and the Avenue Road. The German Timber-Frame Road (Deutsche Fachwerkstrae) connects towns with examples of these structures.[194][195]

Germany's most-visited landmarks include e.g. Neuschwanstein Castle, Cologne Cathedral, Berlin Bundestag, Hofbruhaus Munich, Heidelberg Castle, Dresden Zwinger, Fernsehturm Berlin and Aachen Cathedral. The Europa-Park near Freiburg is Europe's second most popular theme park resort.[196]

With a population of 80.2million according to the 2011 census,[198] rising to at least 81.9million as of 31December2015[update],[199] Germany is the most populous country in the European Union, the second most populous country in Europe after Russia, and the 16th most populous country in the world.[200] Its population density stands at 227 inhabitants per square kilometre (588 per square mile). The overall life expectancy in Germany at birth is 80.19 years (77.93 years for males and 82.58 years for females).[96] The fertility rate of 1.41 children born per woman (2011 estimates), or 8.33 births per 1000 inhabitants, is one of the lowest in the world.[96] Since the 1970s, Germany's death rate has exceeded its birth rate.[201] However, Germany is witnessing increased birth rates and migration rates since the beginning of the 2010s,[202] particularly a rise in the number of well-educated migrants.[203][204]

Four sizeable groups of people are referred to as "national minorities" because their ancestors have lived in their respective regions for centuries:[205] There is a Danish minority (about 50,000) in the northernmost state of Schleswig-Holstein;[205] the Sorbs, a Slavic population of about 60,000, are in the Lusatia region of Saxony and Brandenburg.; the Roma and Sinti live throughout country; and the Frisians are concentrated in Schleswig-Holstein's western coast and in the north-western part of Lower Saxony.[205]

Approximately 5 million Germans live abroad (Auslandsdeutsche).[206]

After the United States, Germany is the second most popular immigration destination in the world.[207][208] As of 2016[update], about ten million of Germany's 82 million residents did not have German citizenship, which makes up 12% of the country's population.[209] The majority of migrants live in western Germany, in particular in urban areas.[210][211]

The Federal Statistical Office classifies the citizens by immigrant background. Regarding the immigrant background, 22.5% of the country's residents, or more than 18.6million people, were of immigrant or partially immigrant descent in 2016 (including persons descending or partially descending from ethnic German repatriates).[213] In 2015, 36% of children under 5 were of immigrant or partially immigrant descent.[214]

In the 2011 census, the designation "people with a migrant (or: migration) background"[215] (Personen mit Migrationshintergrund) was used for all immigrants, including ethnic Germans that came to the federal republic or had at least one parent that settled there after 1955. The largest share of people with a migrant background consists of returning ethnic Germans (Aussiedler and Sptaussiedler), followed by Turkish, European Union, and former Yugoslav citizens.[216]

In the 1960s and 1970s, the German governments invited "guest workers" (Gastarbeiter) to migrate to Germany for work in the German industries. Many companies preferred to keep these workers employed in Germany after they had trained them and Germany's immigrant population has steadily increased.[198]

In 2015, the Population Division of the United Nations Department of Economic and Social Affairs listed Germany as host to the second-highest number of international migrants worldwide, about 5% or 12million of all 244million migrants.[217] Germany ranks 7th amongst EU countries and 37th globally in terms of the percentage of migrants who made up part of the country's population. As of 2014[update], the largest national group was from Turkey (2,859,000), followed by Poland (1,617,000), Russia (1,188,000), and Italy (764,000).[218] 740,000 people have African origins, an increase of 46% since 2011.[213] Since 1987, around 3million ethnic Germans, mostly from the former Eastern Bloc countries, have exercised their right of return and emigrated to Germany.[219]

Upon its establishment in 1871, Germany was about two-thirds Protestant[h] and one-third Roman Catholic, with a notable Jewish minority. Other faiths existed in the state, but never achieved a demographic significance and cultural impact of these three confessions. Germany lost nearly all of its Jewish minority during the Holocaust. Religious makeup changed gradually in the decades following 1945, with West Germany becoming more religiously diversified through immigration and East Germany becoming overwhelmingly irreligious through state policies. It continues to diversify after the German reunification in 1990, with an accompanying substantial decline in religiosity throughout all of Germany and a contrasting increase of evangelical Protestants and Muslims.[220]

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Germany - Wikipedia

Wikipedia bans Daily Mail as ‘unreliable’ source …

Wikipedia editors have voted to ban the Daily Mail as a source for the website in all but exceptional circumstances after deeming the news group generally unreliable.

The move is highly unusual for the online encyclopaedia, which rarely puts in place a blanket ban on publications and which still allows links to sources such as Kremlin backed news organisation Russia Today, and Fox News, both of which have raised concern among editors.

The editors described the arguments for a ban as centred on the Daily Mails reputation for poor fact checking, sensationalism and flat-out fabrication.

The Wikimedia Foundation, which runs Wikipedia but does not control its editing processes, said in a statement that volunteer editors on English Wikipedia had discussed the reliability of the Mail since at least early 2015.

It said: Based on the requests for comments section [on the reliable sources noticeboard], volunteer editors on English Wikipedia have come to a consensus that the Daily Mail is generally unreliable and its use as a reference is to be generally prohibited, especially when other more reliable sources exist.

This means that the Daily Mail will generally not be referenced as a reliable source on English Wikipedia, and volunteer editors are encouraged to change existing citations to the Daily Mail to another source deemed reliable by the community. This is consistent with how Wikipedia editors evaluate and use media outlets in general with common sense and caution.

The proposal was made by an editor known as Hillbillyholiday early in January, and fellow editors had weighed in with arguments for and against the ban over the past month. Those who opposed the move said the Daily Mail was sometimes reliable, that historically its record may have been better, and that there were other publications that were also unreliable.

Some of those who opposed the ban also pointed to inaccurate stories in other respected publications, and suggested the proposed ban was driven by a dislike of the publication.

Of the more than 90 editors who contributed to the discussion, 58 expressed support for the ban, however the final decision was taken by editors designated as closers, who are authorised to enact consensus decisions.

Summarising the discussion, a Wikipedia editor wrote: Consensus has determined that the Daily Mail (including its online version dailymail.co.uk) is generally unreliable, and its use as a reference is to be generally prohibited, especially when other more reliable sources exist. As a result, the Daily Mail should not be used for determining notability, nor should it be used as a source in articles. An edit filter should be put in place, going forward to warn editors attempting to use the Daily Mail as a reference.

The move is likely to stop short of prohibiting linking to the Daily Mail, as there will be instances, such as when a Wikipedia entry is about the newspaper or one of its writers, when the editors believe a link is necessary. Instead a system for flagging any uses of the newspaper as a source will be introduced, asking editors not to use it and find alternatives.

The editors have also asked for volunteers to review about 12,000 links to the Daily Mail already on Wikipedia and replace them with alternative sources wherever possible.

The decision by Wikipedia comes amid widespread debate over the rise of fake news, which has widened to include concerns about misleading information in traditional publications. A recent BuzzFeed analysis claimed that there was little appetite for completely fabricated fake news in the UK because the country already had a highly partisan press.

Wikipedia was set up in 2001 by Jimmy Wales and Larry Sanger and has become one of the most popular websites in the world. It allows anyone to make edits, sometimes leading to instances of false entries and vandalism of pages, but is policed by thousands of people who regular weed out deliberate and accidental errors.

The sites rules on reliable sources state: Wikipedia articles should be based on reliable, published, sources, making sure that all majority and significant minority views that have appeared in those sources are covered ... If no reliable sources can be found on a topic, Wikipedia should not have an article on it.

A spokesman for Mail Newspapers said that only a tiny portion of the sites millions of anonymous editors had been involved in the decision, adding: It is hard to know whether to laugh or cry at this move by Wikipedia. For the record the Daily Mail banned all its journalists from using Wikipedia as a sole source in 2014 because of its unreliability.

Last year, the Daily Mail and MailOnline together published more than half a million stories and yet received just two upheld adjudications each for inaccuracy from the UK industrys regulator IPSO.

All those people who believe in freedom of expression should be profoundly concerned at this cynical politically motivated attempt to stifle the free press.

.

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Wikipedia bans Daily Mail as 'unreliable' source ...

Vitamin D – Wikipedia

Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and multiple other biological effects.[1] In humans, the most important compounds in this group are vitamin D3 (also known as cholecalciferol) and vitamin D2 (ergocalciferol).[2] Cholecalciferol and ergocalciferol can be ingested from the diet and from supplements.[2][3][4] Only a few foods contain vitamin D. The major natural source of the vitamin is synthesis of cholecalciferol in the skin from cholesterol through a chemical reaction that is dependent on sun exposure (specifically UVB radiation). Dietary recommendations typically assume that all of a person's vitamin D is taken by mouth, as sun exposure in the population is variable and recommendations about the amount of sun exposure that is safe are uncertain in view of the skin cancer risk.[5]

Vitamin D from the diet or skin synthesis is biologically inactive; enzymatic conversion (hydroxylation) in the liver and kidney is required for activation. As vitamin D can be synthesized in adequate amounts by most mammals exposed to sufficient sunlight, it is not an essential dietary factor, and so not technically a vitamin.[4] Instead it could be considered a hormone, with activation of the vitamin D pro-hormone resulting in the active form, calcitriol, which then produces effects via a nuclear receptor in multiple locations.[4] Cholecalciferol is converted in the liver to calcifediol (25-hydroxycholecalciferol); ergocalciferol is converted to 25-hydroxyergocalciferol. These two vitamin D metabolites (called 25-hydroxyvitamin D or 25(OH)D) are measured in serum to determine a person's vitamin D status.[6][7] Calcifediol is further hydroxylated by the kidneys to form calcitriol (also known as 1,25-dihydroxycholecalciferol), the biologically active form of vitamin D.[8] Calcitriol circulates as a hormone in the blood, having a major role regulating the concentration of calcium and phosphate, and promoting the healthy growth and remodeling of bone. Calcitriol also has other effects, including some on cell growth, neuromuscular and immune functions, and reduction of inflammation.[5]

Vitamin D has a significant role in calcium homeostasis and metabolism. Its discovery was due to effort to find the dietary substance lacking in children with rickets (the childhood form of osteomalacia).[9] Vitamin D supplements are given to treat or to prevent osteomalacia and rickets, but the evidence for other health effects of vitamin D supplementation in the general population is inconsistent.[10][11] The effect of vitamin D supplementation on mortality is not clear, with one meta-analysis finding a small decrease in mortality in elderly people,[12] and another concluding no clear justification exists for recommending supplementation for preventing many diseases, and that further research of similar design is unneeded in these areas.[13]

Several forms (vitamers) of vitamin D exist. The two major forms are vitamin D2 or ergocalciferol, and vitamin D3 or cholecalciferol; vitamin D without a subscript refers to either D2 or D3 or both. These are known collectively as calciferol.[14] Vitamin D2 was chemically characterized in 1931. In 1935, the chemical structure of vitamin D3 was established and proven to result from the ultraviolet irradiation of 7-dehydrocholesterol.[15]

Chemically, the various forms of vitamin D are secosteroids, i.e., steroids in which one of the bonds in the steroid rings is broken.[15] The structural difference between vitamin D2 and vitamin D3 is the side chain of D2 contains a double bond between carbons 22 and 23, and a methyl group on carbon 24.

The active vitamin D metabolite calcitriol mediates its biological effects by binding to the vitamin D receptor (VDR), which is principally located in the nuclei of target cells.[15] The binding of calcitriol to the VDR allows the VDR to act as a transcription factor that modulates the gene expression of transport proteins (such as TRPV6 and calbindin), which are involved in calcium absorption in the intestine.[17] The vitamin D receptor belongs to the nuclear receptor superfamily of steroid/thyroid hormone receptors, and VDRs are expressed by cells in most organs, including the brain, heart, skin, gonads, prostate, and breast.

VDR activation in the intestine, bone, kidney, and parathyroid gland cells leads to the maintenance of calcium and phosphorus levels in the blood (with the assistance of parathyroid hormone and calcitonin) and to the maintenance of bone content.[1]

One of the most important roles of vitamin D is to maintain skeletal calcium balance by promoting calcium absorption in the intestines, promoting bone resorption by increasing osteoclast number, maintaining calcium and phosphate levels for bone formation, and allowing proper functioning of parathyroid hormone to maintain serum calcium levels. Vitamin D deficiency can result in lower bone mineral density and an increased risk of reduced bone density (osteoporosis) or bone fracture because a lack of vitamin D alters mineral metabolism in the body.[18] Thus, vitamin D is also critical for bone remodeling through its role as a potent stimulator of bone resorption.[18]

The VDR regulates cell proliferation and differentiation. Vitamin D also affects the immune system, and VDRs are expressed in several white blood cells, including monocytes and activated T and B cells.[19] In vitro, vitamin D increases expression of the tyrosine hydroxylase gene in adrenal medullary cells, and affects the synthesis of neurotrophic factors, nitric oxide synthase, and glutathione.[20]

A diet deficient in vitamin D in conjunction with inadequate sun exposure causes osteomalacia (or rickets when it occurs in children), which is a softening of the bones. In the developed world, this is a rare disease.[21][22] However, vitamin D deficiency has become a worldwide problem in the elderly and remains common in children and adults.[23][24] Low blood calcifediol (25-hydroxy-vitamin D) can result from avoiding the sun.[25] Deficiency results in impaired bone mineralization and bone damage which leads to bone-softening diseases,[26][27] including rickets and osteomalacia. Being deficient in vitamin D can cause intestinal absorption of dietary calcium to fall to 15%.[1] When not deficient, an individual usually absorbs between 60-80%.[1]

Rickets, a childhood disease, is characterized by impeded growth and soft, weak, deformed long bones that bend and bow under their weight as children start to walk. This condition is characterized by bow legs,[27] which can be caused by calcium or phosphorus deficiency, as well as a lack of vitamin D; today, it is largely found in low-income countries in Africa, Asia, or the Middle East[28] and in those with genetic disorders such as pseudovitamin D deficiency rickets.[29]

Maternal vitamin D deficiency may cause overt bone disease from before birth and impairment of bone quality after birth.[30][31] Nutritional rickets exists in countries with intense year-round sunlight such as Nigeria and can occur without vitamin D deficiency.[32][33]

Although rickets and osteomalacia are now rare in Britain, outbreaks have happened in some immigrant communities in which osteomalacia sufferers included women with seemingly adequate daylight outdoor exposure wearing Western clothing.[34] Having darker skin and reduced exposure to sunshine did not produce rickets unless the diet deviated from a Western omnivore pattern characterized by high intakes of meat, fish, and eggs, and low intakes of high-extraction cereals.[35][36][37] The dietary risk factors for rickets include abstaining from animal foods.[34][38]

Vitamin D deficiency remains the main cause of rickets among young infants in most countries, because breast milk is low in vitamin D and social customs and climatic conditions can prevent adequate sun exposure. In sunny countries such as Nigeria, South Africa, and Bangladesh, where rickets occurs among older toddlers and children, it has been attributed to low dietary calcium intakes, which are characteristic of cereal-based diets with limited access to dairy products.[37]

Rickets was formerly a major public health problem among the US population; in Denver, where ultraviolet rays are about 20% stronger than at sea level on the same latitude,[39] almost two-thirds of 500 children had mild rickets in the late 1920s.[40] An increase in the proportion of animal protein[38][41] in the 20th century American diet coupled with increased consumption of milk[42][43] fortified with relatively small quantities of vitamin D coincided with a dramatic decline in the number of rickets cases.[1] Also, in the United States and Canada, vitamin D-fortified milk, infant vitamin supplements, and vitamin supplements have helped to eradicate the majority of cases of rickets for children with fat malabsorption conditions.[27]

Osteomalacia is a disease in adults that results from vitamin D deficiency. Characteristics of this disease are softening of the bones, leading to bending of the spine, bowing of the legs, proximal muscle weakness, bone fragility, and increased risk for fractures.[44] Osteomalacia reduces calcium absorption and increases calcium loss from bone, which increases the risk for bone fractures. Osteomalacia is usually present when 25-hydroxyvitamin D levels are less than about 10ng/mL.[2] Although the effects of osteomalacia are thought to contribute to chronic musculoskeletal pain,[45] there is no persuasive evidence of lower vitamin D levels in chronic pain sufferers[46] or that supplementation alleviates chronic nonspecific musculoskeletal pain.[47]

Dark-skinned people living in temperate climates have been shown to have low vitamin D levels but the significance of this is not certain.[48][49][50] Dark-skinned people may be less efficient at making vitamin D because melanin in the skin hinders vitamin D synthesis.[51]

The effects of vitamin D supplementation on health are uncertain.[11][52] A 2013 review did not find any effect from supplementation on the rates of disease, other than a tentative decrease in mortality in the elderly.[53] Vitamin D supplements do not alter the outcomes for myocardial infarction, stroke or cerebrovascular disease, cancer, bone fractures or knee osteoarthritis.[54][55] Low vitamin D levels may result from disease rather than cause disease.[53]

A United States Institute of Medicine report states: "Outcomes related to cancer, cardiovascular disease and hypertension, and diabetes and metabolic syndrome, falls and physical performance, immune functioning and autoimmune disorders, infections, neuropsychological functioning, and preeclampsia could not be linked reliably with calcium or vitamin D intake and were often conflicting."[56]:5 Some researchers claim the IOM was too definitive in its recommendations and made a mathematical mistake when calculating the blood level of vitamin D associated with bone health.[57] Members of the IOM panel maintain that they used a "standard procedure for dietary recommendations" and that the report is solidly based on the data. Research on vitamin D supplements, including large-scale clinical trials, is continuing.[57]

Vitamin D3 supplementation has been tentatively found to lead to a reduced risk of death in the elderly,[12][53] but the effect has not been deemed pronounced or certain enough to make taking supplements recommendable.[13] Other forms (vitamin D2, alfacalcidol, and calcitriol) do not appear to have any beneficial effects with regard to the risk of death.[12] High blood levels appear to be associated with a lower risk of death, but it is unclear if supplementation can result in this benefit.[58] Both an excess and a deficiency in vitamin D appear to cause abnormal functioning and premature aging.[59][60][61] The relationship between serum calcifediol level and all-cause mortality is parabolic.[56] Harm from vitamin D appears to occur at a lower vitamin D level in the black population than in the white population.[56]:435

In general, no good evidence supports the commonly held belief that vitamin D supplements can help prevent osteoporosis.[13] Its general use for prevention of this disease in those without vitamin D deficiency is thus likely not needed.[62] For older people with osteoporosis, taking vitamin D with calcium may help prevent hip fractures, but it also slightly increases the risk of stomach and kidney problems.[63] Supplementation with higher doses of vitamin D, in those older than 65 years, may decrease fracture risk.[64] The effect is small or none for people living independently.[65][66] Low serum vitamin D levels have been associated with falls, and low bone mineral density.[67] Taking extra vitamin D, however, does not appear to change the risk.[68] Athletes who are vitamin D deficient are at an increased risk of stress fractures and/or major breaks, particularly those engaging in contact sports. The greatest benefit with supplementation is seen in athletes who are deficient (25(OH)D serum levels <30ng/mL), or severely deficient (25(OH)D serum levels <25ng/mL). Incremental decreases in risks are observed with rising serum 25(OH)D concentrations plateauing at 50ng/mL with no additional benefits seen in levels beyond this point.[69]

Because it found mounting evidence for a benefit to bone health, though it had not found good evidence of other benefits, the US Food and Drug Administration has required manufacturers to declare the amount of vitamin D on nutrition facts labels, as "nutrients of public health significance", since May 2016. By a proposed deadline extension, small manufacturers with less than $10 million in annual food sales will have to comply by 1 Jan 2021, while larger ones have to comply by 1 Jan 2020.[70]

Vitamin D supplements have been widely marketed for their claimed anticancer properties.[71] Associations have been shown in observational studies between low vitamin D levels and the risk of development of certain cancers.[72] It is unclear, however, if taking additional vitamin D in the diet or as supplements affects the risk of cancer. Reviews have described the evidence as being "inconsistent, inconclusive as to causality, and insufficient to inform nutritional requirements"[56] and "not sufficiently robust to draw conclusions".[65] One 2014 review found that supplements had no significant effect on cancer risk.[13] Another 2014 review concluded that vitamin D3 may decrease the risk of death from cancer (one fewer death in 150 people treated over 5 years), but concerns with the quality of the data were noted.[73] Insufficient evidence exists to recommend vitamin D supplements for people with cancer, although some evidence suggests that low vitamin D may be associated with a worse outcome for some cancers,[74] and that higher 25-hydroxy vitamin D levels at the time of diagnosis are associated with better outcomes.[75]

Taking vitamin D supplements does not meaningfully reduce the risk of stroke, cerebrovascular disease, cardial infarction, or ischaemic heart disease.[13] Supplementation may have no effect on blood pressure.[76]

In general, vitamin D functions to activate the innate and dampen the adaptive immune systems.[77] Deficiency has been linked to increased risk or severity of viral infections, including HIV.[78][79] Low levels of vitamin D appear to be a risk factor for tuberculosis,[80] and historically it was used as a treatment.[81] Supplementation slightly decreases the risk of respiratory tract infections and the exacerbation of asthma.[82][83][84] Evidence is lacking on whether it does so in children under five years of age.[85] No clinical trials have been done to assess its effect on preventing other infections, such as malaria.

Although tentative data link low levels of vitamin D to asthma, evidence to support a beneficial effect on asthmatics from supplementation is inconclusive.[86] Accordingly, supplementation is not currently recommended for treatment or prevention of asthma.[87] Vitamin D and multiple sclerosis incidence have been linked, but it is not clear what the nature of any causal relationship might be.[88] Two systemic reviews concluded that the evidence for vitamin D supplementation being helpful for treating people with multiple sclerosis is inconclusive.[89][90]

Low levels of vitamin D are associated with two major forms of human Inflammatory bowel disease (IBD): Crohn's disease and ulcerative colitis.[91] However, further studies are required to determine its significance and the potential role of vitamin D axis in IBD.[91][92]

Diabetes -- A systematic review of 2014 concluded that the available studies show no evidence of vitamin D3 supplementation having an effect on glucose homeostasis or diabetes prevention.[93] A review article of 2016 reported that while there is increasing evidence that vitamin D deficiency may be a risk factor for diabetes, over-all evidence regarding vitamin D levels and diabetes mellitus is contradictory, requiring further studies.[94]

Depression -- Clinical trials of vitamin D supplementation for depressive symptoms have generally been of low quality and show no overall effect, although subgroup analysis showed supplementation for participants with clinically significant depressive symptoms or depressive disorder had a moderate effect.[95]

Cognition and dementia -- A systematic review of clinical studies found an association between low vitamin D levels with cognitive impairment and a higher risk of developing Alzheimer's disease. However, lower vitamin D concentrations are also associated with poor nutrition and spending less time outdoors. Therefore, alternative explanations for the increase in cognitive impairment exist and hence a direct causal relationship between vitamin D levels and cognition could not be established.[96]

Pregnancy -- Low levels of vitamin D in pregnancy are associated with gestational diabetes, pre-eclampsia, and small (for gestational age) infants.[97] Although taking vitamin D supplements during pregnancy raises blood levels of vitamin D in the mother at term,[98] the extent of benefits for the mother or baby is unclear.[97][98][99] Pregnant women who take an adequate amount of vitamin D during gestation may experience a lower risk of pre-eclampsia[98] and positive immune effects.[100] A 2018 review found that supplements may reduce the risk of undersized babies and of their poor rate of growth.[101] Pregnant women often do not take the recommended amount of vitamin D.[100]

Weight loss -- Though hypothesized that vitamin D supplementation may be an effective treatment for obesity apart from calorie restriction, one systematic review found no association of supplementation with body weight or fat mass.[102] A 2016 meta-analysis found that circulating vitamin D status was improved by weight loss, indicating that fat mass may be inversely associated with blood levels of vitamin D.[103]

Governmental regulatory agencies stipulate for the food and dietary supplement industries certain health claims as allowable as statements on packaging.

European Food Safety Authority

US Food and Drug Administration

Health Canada

Other possible agencies with claim guidance: Japan FOSHU[108] and Australia-New Zealand.[109]

Conversion: 1g = 40IU.

Various institutions have proposed different recommendations for the amount of daily intake of vitamin D. These vary according to precise definition, age, pregnancy or lactation, and the extent assumptions are made regarding skin synthesis of vitamin D.[56][110][111][112]

The dietary reference intake for vitamin D issued in 2010 by the Institute of Medicine (renamed National Academy of Medicine in 2015), superseded previous recommendations which were expressed in terms of Adequate Intake. The recommendations were formed assuming the individual has no skin synthesis of vitamin D because of inadequate sun exposure. The reference intake for vitamin D refers to total intake from food, beverages and supplements, and assumes that calcium requirements are being met.[56]:5 The tolerable upper intake level (UL) is defined as "the highest average daily intake of a nutrient that is likely to pose no risk of adverse health effects for nearly all persons in the general population."[56]:403 Although ULs are believed to be safe, information on the long-term effects is incomplete and these levels of intake are not recommended for long-term consumption.[56]:403:433

For U.S food and dietary supplement labeling purposes, the amount in a serving is expressed as a percent of Daily Value (%DV). For vitamin D labeling purposes, 100% of the Daily Value was 400 IU (10 g), but as of May 27, 2016 it was revised to 800 IU (20 g) to bring it into agreement with the RDA.[114] The deadline to be in compliance was extended by the FDA to January 1, 2020 for large companies and January 1, 2021 for small companies.[115]

Health Canada published recommended dietary allowances (RDA) and tolerable upper intake levels for vitamin D in 2012[110] based on the Institute of Medicine report.[56]

Australia and New Zealand published nutrient reference values including guidelines for dietary vitamin D intake in 2005.[111] About a third of Australians have vitamin D deficiency.[116]

The European Food Safety Authority (EFSA) in 2016[112] reviewed the current evidence, finding the relationship between serum 25(OH)D concentration and musculoskeletal health outcomes is widely variable. They considered that average requirements and population reference intakes values for vitamin D cannot be derived, and that a serum 25(OH)D concentration of 50 nmol/L was a suitable target value. For all people over the age of 1, including women who are pregnant or lactating, they set an adequate intake of 15 g/day (600 IU).[112]

The EFSA reviewed safe levels of intake in 2012,[113] setting the tolerable upper limit for adults at 100 g/day (4000 IU), a similar conclusion as the IOM.

The UK National Health Service recommends babies and young children aged six months to five years, pregnant or breastfeeding women, and sun-deprived elderly people should take daily vitamin supplements to ensure sufficient vitamin D intake.[117] In July 2016, Public Health England recommended that everyone consider taking a daily supplement containing 10g of vitamin D during autumn and winter because of inadequate sunlight for vitamin D synthesis.[118]

The Swedish Food Administration recommends a daily intake of 10 g (400 IU) of vitamin D3 for children and adults up to 75 years, and 20 g (800 IU) for adults 75 and older.[119]

Non-government organisations in Europe have made their own recommendations. The German Society for Nutrition recommends 20g.[120] The European Menopause and Andropause Society recommends postmenopausal women consume15g (600 IU) until age 70, and 20g (800 IU) from age 71. This dose should be increased to 100g (4,000 IU) in some patients with very low vitamin D status or in case of co-morbid conditions.[121]

Although vitamin D is not present naturally in most foods,[2][4] it is commonly added as a fortification in manufactured foods. In some countries, staple foods are artificially fortified with vitamin D.[122]

In general, vitamin D2 is found in fungi and vitamin D3 is found in animals.[123][124] Vitamin D2 is produced by ultraviolet irradiation of ergosterol found in many fungi. The vitamin D2 content in mushrooms and Cladina arbuscula, a lichen, increase with exposure to ultraviolet light.[125][126] This process is emulated by industrial ultraviolet lamps, concentrating vitamin D2 levels to higher levels.[124]

The United States Department of Agriculture reports D2 and D3 content combined in one value.

Manufactured foods fortified with Vitamin D include some fruit juices and fruit juice drinks, meal replacement energy bars, soy protein-based beverages, certain cheese and cheese products, flour products, infant formulas, many breakfast cereals, and milk.[128][129]

In 2016 in the United States, the Food and Drug Administration (FDA) amended food additive regulations for milk fortification,[130] stating that vitamin D3 levels not exceed 42 IU vitamin D per 100 g (400 IU per US quart) of dairy milk, 84 IU of vitamin D2 per 100 g (800 IU per quart) of plant milks, and 89 IU per 100 g (800 IU per quart) in plant-based yogurts.[131] Plant milks are defined as beverages made from soy, almond, rice, among other plant sources intended as alternatives to dairy milk.

While some studies have found that vitamin D3 raises 25(OH)D blood levels faster and remains active in the body longer,[132][133] others contend that vitamin D2 sources are equally bioavailable and effective as D3 for raising and sustaining 25(OH)D.[124][134][135]

Vitamin D content in typical foods is reduced variably by cooking. Boiled, fried and baked foods retained 6989% of original vitamin D.[136]

> 75

50-74

25-49

Recommendations on recommended 25(OH)D serum levels vary across authorities, and vary based on factors like age.[5] US labs generally report 25(OH)D levels in ng/mL. Other countries often use nmol/L. Oneng/mL is approximately equal to 2.5nmol/L.

A 2014 review concluded that the most advantageous serum levels for 25(OH)D for all outcomes appeared to be close to 30ng/mL (75 nmol/L).[139] The optimal vitamin D levels are still controversial and another review concluded that ranges from 30 to 40ng/mL (75 to 100nmol/L) were to be recommended for athletes.[140] Part of the controversy is because numerous studies have found differences in serum levels of 25(OH)D between ethnic groups; studies point to genetic as well as environmental reasons behind these variations.[141] Supplementation to achieve these standard levels could cause harmful vascular calcification.[50]

A 2012 meta-analysis showed that the risk of cardiovascular diseases increases when blood levels of vitamin D are lowest in a range of 8 to 24ng/mL (20 to 60nmol/L), although results among the studies analyzed were inconsistent.[142]

In 2011 an IOM committee concluded a serum 25(OH)D level of 20ng/mL (50nmol/L) is needed for bone and overall health. The dietary reference intakes for vitamin D are chosen with a margin of safety and 'overshoot' the targeted serum value to ensure the specified levels of intake achieve the desired serum 25(OH)D levels in almost all persons. No contributions to serum 25(OH)D level are assumed from sun exposure and the recommendations are fully applicable to people with dark skin or negligible exposure to sunlight. The Institute found serum 25(OH)D concentrations above 30ng/mL (75nmol/L) are "not consistently associated with increased benefit". Serum 25(OH)D levels above 50ng/mL (125nmol/L) may be cause for concern. However, some people with serum 25(OH)D between 30 and 50ng/mL (75nmol/L-125nmol/L) will also have inadequate vitamin D.[56]

Vitamin D toxicity is rare.[24] It is caused by supplementing with high doses of vitamin D rather than sunlight. The threshold for vitamin D toxicity has not been established; however, according to some research, the tolerable upper intake level (UL) is 4,000 IU/day for ages 971[143] (100g/day), while other research concludes that, in healthy adults, sustained intake of more than 1250g/day (50,000IU) can produce overt toxicity after several months and can increase serum 25-hydroxyvitamin D levels to 150ng/mL and greater.[24][144] Those with certain medical conditions, such as primary hyperparathyroidism,[145] are far more sensitive to vitamin D and develop hypercalcemia in response to any increase in vitamin D nutrition, while maternal hypercalcemia during pregnancy may increase fetal sensitivity to effects of vitamin D and lead to a syndrome of mental retardation and facial deformities.[145][146]

A review published in 2015 noted that adverse effects have been reported only at 25(OH)D serum concentrations above 200 nmol/L.[140]

Published cases of toxicity involving hypercalcemia in which the vitamin D dose and the 25-hydroxy-vitamin D levels are known all involve an intake of 40,000IU (1,000g) per day.[145]

Pregnant or breastfeeding women should consult a doctor before taking a vitamin D supplement. The FDA advised manufacturers of liquid vitamin D supplements that droppers accompanying these products should be clearly and accurately marked for 400 international units (1 IU is the biological equivalent of 25ng cholecalciferol/ergocalciferol). In addition, for products intended for infants, the FDA recommends the dropper hold no more than 400 IU.[147] For infants (birth to 12 months), the tolerable upper limit (maximum amount that can be tolerated without harm) is set at 25g/day (1,000IU). One thousand micrograms per day in infants has produced toxicity within one month.[144] After being commissioned by the Canadian and American governments, the Institute of Medicine (IOM) as of 30November2010[update], has increased the tolerable upper limit (UL) to 2,500IU per day for ages 13 years, 3,000IU per day for ages 48 years and 4,000IU per day for ages 971+ years (including pregnant or lactating women).[143]

Calcitriol itself is auto-regulated in a negative feedback cycle, and is also affected by parathyroid hormone, fibroblast growth factor 23, cytokines, calcium, and phosphate.[148]

Vitamin D overdose causes hypercalcemia, which is a strong indication of vitamin D toxicity this can be noted with an increase in urination and thirst. If hypercalcemia is not treated, it results in excess deposits of calcium in soft tissues and organs such as the kidneys, liver, and heart, resulting in pain and organ damage.[24][27][44]

The main symptoms of vitamin D overdose which are those of hypercalcemia including anorexia, nausea, and vomiting. These may be followed by polyuria, polydipsia, weakness, insomnia, nervousness, pruritus and ultimately renal failure. Furthermore, proteinuria, urinary casts, azotemia, and metastatic calcification (especially in the kidneys) may develop.[144] Other symptoms of vitamin D toxicity include mental retardation in young children, abnormal bone growth and formation, diarrhea, irritability, weight loss, and severe depression.[24][44]

Vitamin D toxicity is treated by discontinuing vitamin D supplementation and restricting calcium intake. Kidney damage may be irreversible. Exposure to sunlight for extended periods of time does not normally cause vitamin D toxicity. The concentrations of vitamin D precursors produced in the skin reach an equilibrium, and any further vitamin D produced is degraded.[145]

Synthesis of vitamin D in nature is dependent on the presence of UV radiation and subsequent activation in liver and in kidney. Many animals synthesize vitamin D3 from 7-dehydrocholesterol, and many fungi synthesize vitamin D2 from ergosterol.[123][124]

Click on icon in lower right corner to open.Click on genes, proteins and metabolites below to link to respective articles. [ 1]

The transformation that converts 7-dehydrocholesterol to vitamin D3 occurs in two steps.[149][150] First, 7-dehydrocholesterol is photolyzed by ultraviolet light in a 6-electron conrotatory ring-opening electrocyclic reaction; the product is previtaminD3. Second, previtaminD3 spontaneously isomerizes to vitaminD3 (cholecalciferol) in an antarafacial sigmatropic [1,7] hydride shift. At room temperature, the transformation of previtaminD3 to vitamin D3 in an organic solvent takes about 12 days to complete. The conversion of previtaminD3 to vitamin D3 in the skin is about 10 times faster than in an organic solvent.[151]

The conversion from ergosterol to vitamin D2 follows a similar procedure, forming previtaminD2 by photolysis, which isomerizes to vitamin D2.[152] The transformation of previtaminD2 to vitamin D2 in methanol has a rate comparable to that of previtaminD3. The process is faster in white button mushrooms.[153](fig. 3)

Vitamin D3 is produced photochemically from 7-dehydrocholesterol in the skin of most vertebrate animals, including humans.[154] The precursor of vitamin D3, 7-dehydrocholesterol is produced in relatively large quantities. 7-Dehydrocholesterol reacts with UVB light at wavelengths between 270 and 300nm, with peak synthesis occurring between 295 and 297nm.[155] These wavelengths are present in sunlight, as well as in the light emitted by the UV lamps in tanning beds (which produce ultraviolet primarily in the UVA spectrum, but typically produce 4% to 10% of the total UV emissions as UVB). Exposure to light through windows is insufficient because glass almost completely blocks UVB light.[156][157]

Adequate amounts of vitamin D can be produced with moderate sun exposure to the face, arms and legs, averaging 530 minutes twice per week, or approximately 25% of the time for minimal sunburn. The darker the skin, and the weaker the sunlight, the more minutes of exposure are needed. Vitamin D overdose is impossible from UV exposure; the skin reaches an equilibrium where the vitamin degrades as fast as it is created.[24][158][159]

Sunscreen absorbs or reflects ultraviolet light and prevents much of it from reaching the skin.[160] Sunscreen with a sun protection factor (SPF) of 8 based on the UVB spectrum decreases vitamin D synthetic capacity by 95%, and SPF 15 decreases it by 98%.[161]

The skin consists of two primary layers: the inner layer called the dermis, composed largely of connective tissue, and the outer, thinner epidermis.[162] Thick epidermis in the soles and palms consists of five strata; from outer to inner, they are: the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale. Vitamin D is produced in the keratinocytes[163] of two innermost strata, the stratum basale and stratum spinosum.[160]

Vitamin D can be synthesized only by a photochemical process. Phytoplankton in the ocean (such as coccolithophore and Emiliania huxleyi) have been photosynthesizing vitamin D for more than 500 million years. Primitive vertebrates in the ocean could absorb calcium from the ocean into their skeletons and eat plankton rich in vitamin D.

Land vertebrates required another source of vitamin D other than plants for their calcified skeletons. They had to either ingest it or be exposed to sunlight to photosynthesize it in their skin.[123][151] Land vertebrates have been photosynthesizing vitamin D for more than 350 million years.[164]

In birds and fur-bearing mammals, fur or feathers block UV rays from reaching the skin. Instead, vitamin D is created from oily secretions of the skin deposited onto the feathers or fur, and is obtained orally during grooming.[165] However, some animals, such as the naked mole-rat, are naturally cholecalciferol-deficient, as serum 25-OH vitamin D levels are undetectable.[166]

Vitamin D3 (cholecalciferol) is produced industrially by exposing 7-dehydrocholesterol to UVB light, followed by purification.[167] The 7-dehydrocholesterol is a natural substance in fish organs, especially the liver,[168] or in wool grease (lanolin) from sheep. Vitamin D2 (ergocalciferol) is produced in a similar way using ergosterol from yeast or mushrooms as a starting material.[167][124]

Vitamin D is carried in the bloodstream to the liver, where it is converted into the prohormone calcifediol. Circulating calcifediol may then be converted into calcitriol, the biologically active form of vitamin D, in the kidneys.[169]

Whether it is made in the skin or ingested, Vitamin D is hydroxylated in the liver at position 25 (upper right of the molecule) to form 25-hydroxycholecalciferol (calcifediol or 25(OH)D).[170] This reaction is catalyzed by the microsomal enzyme vitamin D 25-hydroxylase, the product of the CYP2R1 human gene, and expressed by hepatocytes.[171] Once made, the product is released into the plasma, where it is bound to an -globulin carrier protein named the vitamin D-binding protein.[172]

Calcifediol is transported to the proximal tubules of the kidneys, where it is hydroxylated at the 1- position (lower right of the molecule) to form calcitriol (1,25-dihydroxycholecalciferol, 1,25(OH)2D). The conversion of calcifediol to calcitriol is catalyzed by the enzyme 25-hydroxyvitamin D3 1-alpha-hydroxylase, which is the product of the CYP27B1 human gene. The activity of CYP27B1 is increased by parathyroid hormone, and also by low calcium or phosphate.[4][169]

Following the final converting step in the kidney, calcitriol is released into the circulation. By binding to vitamin D-binding protein, calcitriol is transported throughout the body, including to the classical target organs of intestine, kidney and bone.[15] Calcitriol is the most potent natural ligand of the vitamin D receptor, which mediates most of the physiological actions of vitamin D.[4][169]

In addition to the kidneys, calcitriol is also synthesized by certain other cells including monocyte-macrophages in the immune system. When synthesized by monocyte-macrophages, calcitriol acts locally as a cytokine, modulating body defenses against microbial invaders by stimulating the innate immune system.[169]

The activity of calcifediol and calcitriol can be reduced by hydroxylation at position 24 by vitamin D3 24-hydroxylase, forming secalciferol and calcitetrol respecively.[170]

VitaminD2 (ergocalciferol) and VitaminD3 (cholecaliferol) share a similar mechanism of action as outlined above.[170] Metabolites produced by vitamin D2 is sometimes named with a er- or ergo prefix to differentiate them from the D3-based counterparts.[173] Nevertheless, these differences are present in the metabolism of VitaminD2 and VitaminD3:[170]

American researchers Elmer McCollum and Marguerite Davis in 1914[9] discovered a substance in cod liver oil which later was called "vitamin A". British doctor Edward Mellanby noticed dogs that were fed cod liver oil did not develop rickets and concluded vitamin A, or a closely associated factor, could prevent the disease. In 1922, Elmer McCollum tested modified cod liver oil in which the vitamin A had been destroyed.[9] The modified oil cured the sick dogs, so McCollum concluded the factor in cod liver oil which cured rickets was distinct from vitamin A. He called it vitamin D because it was the fourth vitamin to be named.[176][177][178] It was not initially realized that, unlike other vitamins, vitamin D can be synthesised by humans through exposure to UV light.

In 1925,[9] it was established that when 7-dehydrocholesterol is irradiated with light, a form of a fat-soluble vitamin is produced (now known as D3). Alfred Fabian Hess stated: "Light equals vitamin D."[179] Adolf Windaus, at the University of Gttingen in Germany, received the Nobel Prize in Chemistry in 1928 for his work on the constitution of sterols and their connection with vitamins.[180] In 1929, a group at NIMR in Hampstead, London, were working on the structure of vitamin D, which was still unknown, as well as the structure of steroids. A meeting took place with J.B.S. Haldane, J.D. Bernal, and Dorothy Crowfoot to discuss possible structures, which contributed to bringing a team together. X-ray crystallography demonstrated the sterol molecules were flat, not as proposed by the German team led by Windaus. In 1932, Otto Rosenheim and Harold King published a paper putting forward structures for sterols and bile acids which found immediate acceptance.[181] The informal academic collaboration between the team members Robert Benedict Bourdillon, Otto Rosenheim, Harold King, and Kenneth Callow was very productive and led to the isolation and characterization of vitamin D.[182] At this time, the policy of the Medical Research Council was not to patent discoveries, believing the results of medical research should be open to everybody. In the 1930s, Windaus clarified further the chemical structure of vitamin D.[183]

In 1923, American biochemist Harry Steenbock at the University of Wisconsin demonstrated that irradiation by ultraviolet light increased the vitamin D content of foods and other organic materials.[184] After irradiating rodent food, Steenbock discovered the rodents were cured of rickets. A vitamin D deficiency is a known cause of rickets. Using $300 of his own money, Steenbock patented his invention. His irradiation technique was used for foodstuffs, most memorably for milk. By the expiration of his patent in 1945, rickets had been all but eliminated in the US.[185]

In 1969, after studying nuclear fragments of intestinal cells, a specific binding protein for Vitamin D called the Vitamin D Receptor was identified by Mark Haussler and Tony Norman.[186] In 197172, the further metabolism of vitamin D to active forms was discovered. In the liver, vitamin D was found to be converted to calcifediol. Calcifediol is then converted by the kidneys to calcitriol, the biologically active form of vitamin D.[8] Calcitriol circulates as a hormone in the blood, regulating the concentration of calcium and phosphate in the bloodstream and promoting the healthy growth and remodeling of bone. The vitamin D metabolites, calcifediol and calcitriol, were identified by competing teams led by Michael F. Holick in the laboratory of Hector DeLuca and by Tony Norman and colleagues.[187][188][189]

There is considerable research activity looking at effects of vitamin D and its metabolites in animal models, cell systems, gene expression studies, epidemiology and clinical therapeutics. These different types of studies can produce conflicting evidence as to the benefits of interventions with vitamin D.[190] One school of thought contends the human physiology is fine-tuned to an intake of 4,00012,000IU/day from sun exposure with concomitant serum 25-hydroxyvitamin D levels of 40 to 80ng/mL[191] and this is required for optimal health. Proponents of this view, who include some members of the panel that drafted a now-superseded 1997 report on vitamin D from the IOM, contend the IOM's warning about serum concentrations above 50ng/mL lacks biological plausibility. They suggest, for some people, reducing the risk of preventable disease requires a higher level of vitamin D than that recommended by the IOM.[191][192]

The United States National Institutes of Health Office of Dietary Supplements established a Vitamin D Initiative in 2014 to track current research and provide education to consumers.[193] In their 2016 review, they recognise that a growing body of research suggests that vitamin D might play some role in the prevention and treatment of types 1 and 2 diabetes, glucose intolerance, hypertension, multiple sclerosis, and other medical conditions. They state further: "however, most evidence for these roles comes from in vitro, animal, and epidemiological studies, not the randomized clinical trials considered to be more definitive. Until such trials are conducted, the implications of the available evidence for public health and patient care will be debated".[5]

Some preliminary studies link low vitamin D levels with disease later in life.[194] Evidence as of 2013 is insufficient to determine whether vitamin D affects the risk of cancer.[195] One meta-analysis found a decrease in mortality in elderly people.[12] Another meta-analysis covering over 350,000 people concluded that vitamin D supplementation in unselected community-dwelling individuals does not reduce skeletal (total fracture) or non-skeletal outcomes (myocardial infarction, ischaemic heart disease, stroke, cerebrovascular disease, cancer) by more than 15%, and that further research trials with similar design are unlikely to change these conclusions.[13]

Vitamin D deficiency is widespread in the European population.[196] European research is assessing vitamin D intake levels in association with disease rates and policies of dietary recommendations, food fortification, vitamin D supplementation, and small amounts of sun exposure.[129]

Apart from VDR activation, various alternative mechanisms of action are under study, such as inhibition of signal transduction by hedgehog, a hormone involved in morphogenesis.[197]

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Wiki Offline delivers flexibility and joy for the Wikipedia experience. The full text of all Wikipedia articles are stored to your iPhone/iPad/iPod. You will literally hold the world's knowledge in the palm of your hands. No more worrying about slow internet connections, overage bandwidth charges, or traveling to areas without internet, because with Wiki Offline, Wikipedia will be there for you when you need it.Join the myriad of scientists, teachers, frequent flyers, vacationers, parents, and knowledge lovers whose lives have been improved by Wiki Offline.

Wiki Offline brings joy to the reading experience. No more squinting at tiny text, no more eye strain from staring into a bright screen -- the entire display is customizable. Personalize your Wikipedia experience by organizing your favorite articles into folders for later enjoyment. Mark articles to be "read later" and build up a queue. Automatically import the latest text and images (internet required) and enjoy a beautifully formatted take on the legendary encyclopedia.

BENEFITS: - Enjoy the full text of all Wikipedia articles- Use it in bed, 30,000 feet in the air, or 20,000 leagues under the sea- Amazingly fast -- faster than an internet connection - Embed images in articles (internet required) for the most beautiful experience- Find terms within the page- Full screen viewing for best reading experience - Organize your searches into bookmarks and folders- Full page history, reading queue, and table of contents help you navigate - Personalize your reading experience by customizing the font, brightness, and color - Available in English, Chinese, Italian, Arabic, Czech, Spanish, Russian, Dutch, Portuguese, Norwegian, Turkish, Thai, Polish, French, Hungarian, Farsi, Japanese, Hebrew, Korean, Swedish, Danish, and Slovak!

NOTES: Upon launching the app, you will be prompted to download Wikipedia onto your device. It has been meticulously compressed (English is 4.0GB) while maintaining all of the data in every single article. (Note that pictures and tables are not included, but can be downloaded from within the app). This download is fully resumable and hosted on high speed servers located around the world.

The initial download requires WiFi. If you don't have WiFi, you can email support for instructions on how to download the files and transfer them through your computer.

After the initial download, you will be able to browse all Wikipedia articles without internet access.

You can download the latest version of the database in the app, or you can download additional languages. Please note that there is a nominal $0.99 fee to partially offset our costs to deliver such large files.

TIPS: - Instantly scroll to the beginning of an article by tapping the status bar (the very top of the screen) - Double tap in an article to switch to full screen mode- Pull down on the top of an article to lock the screen orientation - Pinch an article to change the font quickly- Pull down on the language list in the settings to check for updates

SUPPORT: Don't be afraid to get in touch with us. User input is greatly appreciated -- in fact, most new features are suggested by users like yourself!

WIKIPEDIA is a trademark of the Wikimedia Foundation. We are not endorsed by or affiliated with the Wikimedia Foundation.

1% of net profits derived from the sale of this app will be donated to the Wikimedia Foundation.

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Wiki Offline A Wikipedia Experience on the App Store