This happens when UVB rays from the sun convert a substance in the skin called 7-dehydrocholesterol into vitamin D3 through a series of chemical reactions. You can also find vitamin D3 in animal ...

Vitamin D3 is made commercially and synthetically in a similar way that it is produced intrinsically in human and animal skin when exposed to UVB light. Wool sources of 7-dehydrocholesterol are ...

Sun exposure is the primary source of vitamin D3 for most people. UVB rays from the sun convert 7-dehydrocholesterol in the skin to previtamin D3, which then undergoes further processing to become ...

In fact, we can produce enough vitamin D to maintain essential processes when our skin is adequately exposed to the ultraviolet rays in sunlight. The precursor 7-dehydrocholesterol, which is found ...

Your skin has 7-dehydrocholesterol which helps absorb ultraviolet (UV) B radiation and converts it into previtamin D3. This then isomerises into vitamin D3. To get the required amount of Vitamin D ...