Niacin (vitamin B3) is a small molecule made of only 14 atoms, smaller even than the simplest sugar. But this one molecule has profound effects on health: it plays a role in more than 500 reactions in the body. Many illnesses are caused by too little niacin, and many illnesses can be cured with high doses of niacin. The authors of Niacin: The Real Story are advocates of orthomolecular (nutrition-based) medicine, supporting an approach to wellness...