Jack Challem is one of America's most trusted nutrition and health writers and a member of the American Society for Nutrition. Based in Tucson, Arizona, he is the bestselling author of more than twenty books, including No More Fatigue, Stop Prediabetes Now, The Food-Mood Solution, Feed Your Genes Right, and Syndrome X.
Ron Hunninghake, MD, is the Chief Medical Officer of Riordan Clinic. A 1976 graduate of the University of Kansas School of Medicine, he has devoted his career to the emerging paradigm of self care: the patient as an informed medical partner.