Ever since I've gone paleo I've learnt that vitamin D is very important for health and well being and even helps to ward off cancer. Its winter where I am so I can't get much vitamin D so its either from food like fish or from the reserve in the body. I like to go topless and lay in the sun for 15-30 minutes (this is adequate exposure for fair skin). My diet is very varied with lots of vegetables, fish, pasture fed meat and antioxidant rich snack foods. I often feel guilty afterwards but I feel reassured that I'm opposing conventional wisdom in the right way.
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Yes of course Exposure of skin to sunlight for vitamin D3 is best in the time of 10am to 2 pm. One of the important question how long the sunbathe is required? The answer lies in the type of skin color, age time of day etc. For dark skinned person 60 to 120 mins and for light skinned 20- 30 mins is recommended.
Like huntergatherer said, the sun is only strong enough for part of the year, depending on your location. See this site: http://articles.mercola.com/sites/articles/archiv...
In the winter, I take vitamin D-3 drops--I've heard they're pretty effective.
Its my understanding that even on sunny days in winter when the sun's angle is less than 50 degrees you can't make vitamin D because the UVB wavelength can't pass through the atmosphere.
Of course I do and it is crucial for health. In winter I have a patio recliner in a sheltered spot (from winds), and when it is bright I go out and bare as much skin as possible. The bricks reflect some heat. During the growing season I make it a point to be out at midday, and to work in the garden in sandals, shorts and top tank. When I play soccer I ALWAYS play with the skins, and I have stopped playing indoors. Much better than pills, and it adds up.