vitamin D

Insane Factoid of the Day

 "I'm going to Florida. I'll stop my vitamin D because I'm going to lay in the sun." 
Wrong. 90% of adults over 40 years old have lost the majority of their ability to activate vitamin D in the skin. A typical response might be an increase in blood level from 25 to 35 ng/ml--a 10 ng increase with a dark brown tan.