posted at 07:50
Author Name: Kevin Loria
Health Effects Of The Sun And Vitamin D
That's because your body produces vitamin D when exposed to the sun. The so-called "Sunshine vitamin" helps the body absorb calcium, which is essential for bone health. Vitamin D is found in fatty fish like salmon and in fortified dairy products, but it's also naturally produced when the sun shines on skin, triggering a reaction that makes vitamin D from cholesterol. Despite the back and forth over its importance, every cell in the body has a receptor for the sunshine vitamin, according to Michael Holick, a professor and vitamin D expert at Boston University's School of Medicine. According to the Harvard School of Public Health, as many as a billion people worldwide may be vitamin D deficient, especially those that live north of the latitudinal lines connecting San Francisco to Philadelphia or Athens to Beijing. Some people have trouble producing enough vitamin D naturally, and the American Academy of Dermatology recommends supplements instead of the sun for skin health. Still, you need only about 15 minutes of sun a day to get adequate vitamin D if you are fair skinned - and more if you have darker skin, since melanin, which makes skin darker, makes it harder for your body to take advantage of the sun's rays. If you are covered up or wearing sunscreen for those 15 minutes, you also won't produce enough vitamin D. People that are older or overweight also have trouble naturally producing enough vitamin D. Be sure to get some sunshine.

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