For Optimal Health, Maintain a Vitamin D Level of 60 ng/mL

It's one of the most-ignored wellness strategies on earth - but why? Ample evidence shows that without it, your risk of internal tumors skyrockets. It's a godsend for best pregnancy outcomes too.

STORY AT-A-GLANCE

• Vitamin D is involved in the biology of all the cells and tissues in your body, including your immune cells. Your cells need the active form of vitamin D to gain access to the genetic blueprints stored inside

• While the American Medical Association considers 20 nanograms per milliliter (ng/mL) sufficient, a compelling body of research sug…