Up to 70 Percent of Americans May be Deficient in Vitamin D--Find Out Why You Don't Want to be One of Them

Up to 70 Percent of Americans May be Deficient in Vitamin D--Find Out Why You Don't Want to be One of Themhttp://articles.mercola.com/sites/articles/archive/2003/12/24/vitamin-d-deficiency.aspxBy John Jacob Cannell, M.D., executive director of The Vitamin D Council Vitamin D is a vital nutrient that is unique, both in terms of its physiology and because humans rely on both endogenous skin production and exogenous sources to meet biologicalenCommunityServer 2008.5 SP1 (Build: 31106.3070)