Jason Theodosakis, M.D., M.S., M.P.H., is the Assistant Clinical Professor and the director of the Preventative Medicine Residency Training Program at the University of Arizona College of Medicine in Tucson.
Sheila Buff is the author or co-author of many books on medicine, health, and nutrition, including The Complete Idiot's Guide to Vitamins and Minerals, The Good Fat, Bad Fat Counter, and Dr. Atkins' Age-Defying Diet.