A major—far more than the standard recommended—dose of vitamin D3 could be one of the keys to treating the ever-skyrocketing incidence of autoimmune disease in this country, says Southern California-based Dr. Steven Gundry. Here, he shares the surprising discoveries he’s made that have caused him to overturn what he learned about vitamin D in med school, and that underlie the high levels of vitamin D3 he recommends.

Source: Vitamins & Supplements – Goop