Just how much sun is enough to meet vitamin D needs?
Friday, September 25, 2009 - 19:21
in Biology & Nature
You have said that people who get 10 to 15 minutes of sun exposure at one time can make enough vitamin D in their skin. On what percent of the body is it necessary to get that exposure in order to convert the sun into 10,000 IUs per day? Just the face? The hands? Bare naked?