Holick MF (2008) Sunlight, UV-radiation, vitamin D and skin cancer: how much sunlight do we need? Adv Exp Med Biol 624 , 1–15.M. F. Holick, "Sunlight, UV-radiation, vitamin D and skin can- cer: how much sunlight do we need?" Advances in Experimental Medicine and Biology, vol....
Studies have found that sunscreens with sun protection factor (SPF) 8 or higher block our skin's ability to produce vitamin D from sunlight by as much as 95 percent (and SPF 15 or higher by 99 percent) [source: Holick, Ginde]. The bottom line? Be reasonable. Talk to your doct...
What are the functions and sources of vitamin D, including its synthesis by the action of ultraviolet radiation and the signs and symptoms of vitamin D deficiency? What vitamin is best for eye health? The skin became dark when exposed to too much sunlight due to what? What is the danger o...
Vitamin D is vital for numerous bodily functions. While sunlight is the primary source of vitamin D, record high temperatures this summer may dissuade people from spending time in the sun. An expert at Baylor College of Medicine talks about the importance of vitamin D and alternatives ways to ...
For example, there are long, dark winters of little sunlight in Sweden and Norway, so many people in these countries often feel sad. Without much sunlight, their bodies produce less vitamin D. Without enough vitamin D, their bodies make less of this special chemical substance ...
Given the remarkably powerful benefits of vitamin D, many find themselves wondering how to actually go about obtaining it. We know that vitamin D is good for us, but how much do we need, and where do we get it? Most people know that sunlight is somehow involved in vitamin D production,...
isn’t available year-round. Even for those who do have access to lots of sunlight, nine-to-five desk jobs usually make it challenging to spend more time indoors. Plus, the use of UV-blockingsunscreen to protect the skinand prevent accelerated aging blocks most of the vitamin D production...
Increased sunlight exposure and boosted vitamin D levels can also: Support bone and muscle health (7) Regulate blood pressure Improve immune function Protect against depression Regulate blood sugar levels How Much Sunlight Do We Need? While there are no hard and fast rules for how much sunlight ...
. But spending too much time indoors may be disrupting it. The solution? Go outside, get exposed to daylight and get your daily dose of vitamin D. How light impacts our circadian rhythm and, consequently, our healthLight is the strongest mechanism we have for synchronizing our internal ...
Luckily it takes only 10 to 20 minutes of exposure to sunlight a day to ensure sufficient vitamin D production. Except in extremely atmospheric conditions like very heavy smog or a sunless climate, most people are able to get enough exposure to the sun. Doctors recommend that people who don...