What Vitamin D Level "Should" I Have?

By: John Whitcomb, MD With the return of the sun, the question arises: What level of Vitamin D “should” I have? The logic that we usually apply to this is to ask what happens naturally for those who spend their days in the sun, such as life guards, worshipers of the tanning booth, or farmers in the tropics. But then again, that’s not how early humanity lived. When we were in tropical and dessert climates, wearing few (if any) clothes, and exposed to sun all day long, what was our D level? (Doesn’t that sound like spring break in Florida to you?)...