Low levels of Vitamin D?
http://www.nutraingredients-usa.com/Industry/Food-insufficient-for-Canadian-vitamin-D-intakes?nocount
"Findings published in the American Journal of Clinical Nutrition indicate that 25 percent of the 5,306 participants of the Canadian Health Measures Survey had blood levels below the RDA of 50 nanomoles per liter."
Actually, what are the numbers for diabetics versus th…