Ads
related to: how does sunlight produce vitamin d
Search results
Results From The WOW.Com Content Network
Most people in the world depend on the sun to get vitamin D, [31] and elderly populations in low UVB countries experience higher rates of cancer. [32] There are not many foods that naturally have vitamin D. [33] Examples are cod liver oil and oily fish. If people cannot get sunlight, then they will need 1,000 IU of vitamin D per day to stay ...
Ordon reiterates that direct sun exposure — a.k.a. being outside in the sun — can help the body produce enough vitamin D, but for the vast majority of people in the U.S., this is only possible ...
The main way people get vitamin D is through sunlight — but with the shorter days and colder temperatures, spending time outdoors can be a challenge. ... Mushrooms are the only produce-aisle ...
Sunlight. Humans get a lot of their vitamin D from exposure to ultraviolet (UV) light from the sun. "The production of the vitamin D is activated in the skin through contact with UVB rays," says ...
7-Dehydrocholesterol (7-DHC) is a zoosterol that functions in the serum as a cholesterol precursor, and is photochemically converted to vitamin D 3 in the skin, therefore functioning as provitamin-D 3. The presence of this compound in human skin enables humans to manufacture vitamin D 3 (cholecalciferol).
Unlike the other twelve vitamins, vitamin D is only conditionally essential - in a preindustrial society people had adequate exposure to sunlight and the vitamin was a hormone, as the primary natural source of vitamin D was the synthesis of cholecalciferol in the lower layers of the skin’s epidermis, triggered by a photochemical reaction with ...
So, anytime you're standing in the sun's rays, your body is quite literally soaking up the sun, then using it to get vitamin D. This happens when "UV rays convert a substance on our skin called 7 ...
The ultraviolet radiation in sunlight has both positive and negative health effects, as it is both a requisite for vitamin D 3 synthesis and a mutagen. Sunlight takes about 8.3 minutes to reach Earth from the surface of the Sun. [ 3 ] A photon starting at the center of the Sun and changing direction every time it encounters a charged particle ...