26
Apr
Uvb And Vitamin D. The skin actually produces a precursor that is converted into the active form of the vitamin by the liver and kidneys Vitamin D is best known for its vital role in bone health. Short sessions of UVB or UVAB radiation with the same vitamin D-weighted exposure increased 25 OHD levels. Dabei wird Provitamin D3 eine Substanz die in unseren Hautzellen vorhanden ist durch das Einwirken von UV -B-. It is a biological certainty that UVB makes Vitamin D in human skin and nearly every cell in the human body has a Vitamin D receptor.
During exposure to sunlight 7-dehydrocholesterol in the skin absorbs UV B radiation and is converted to previtamin D3 which in turn isomerizes into vitamin D3. The Garland brothers had just driven from San Diego to Baltimore and they knew that it was sunny in the southwest but rather cloudy in the northwest. No UVB Vitamin D gets thru but most UVA Tan gets thru. They reasoned that the most important role of UVB. The problem is too many people think that using sunscreen and other forms of sun protection leads to vitamin D deficiency and that the best way to obtain enough of the vitamin is through unprotected sun exposure. Dabei wird Provitamin D3 eine Substanz die in unseren Hautzellen vorhanden ist durch das Einwirken von UV -B-.
Vitamin D has many roles in the body and is essential for optimal health.
The angle of the Sun above the horizon at sea level also affects the production of vitamin D because the atmosphere is thicker at. Previtamin D3 and vitamin D3 also absorb UV B radiation and are converted into a variety of photoproducts some of which have. Many people can derive the vitamin D that their bodies need through direct exposure. UVB and UVAB radiation significantly increased 25 OHD levels. They reasoned that the most important role of UVB. In the UVA group the increase was less with the same vitamin D-weighted radiation dose.