Translations:Vitamin (D3)/2/en
The vitamin D3-hormone is also often abbreviated as vitamin D. Strictly speaking, this is not a real vitamin, since the body can produce vitamin D hormone itself from precursors in the skin under the influence of UV light. The precursors of vitamin D are derived from cholesterol. Biochemical transformations of vitamin D precursors in the liver and kidneys finally lead to the effective form of vitamin D hormone, 1,25-(OH)2-Cholecalciferol . Man can also absorb this via the digestive tract.