Dr. Graham Simpson graduated from the University of Witwatersrand Medical School in Johannesburg, South Africa. He is Board Certified in Internal Medicine and Emergency Medicine. He is a founding member of the American Holistic Medical Association (AHMA) and is also a licensed homeopath. He is the author of WellMan (Live Longer by Controlling Inflammation), and Reversing Cardio-Metabolic Disease with the Original Paleo Diet, and co-author of Spa Medicine with Dr. Stephen Sinatra (Basic Health).

Dr. Simpson has also taught as an assistant professor of medicine at the University of Nevada, Reno. He is certified in Age Management Medicine and is the founder of Eternity Medicine, Eternity Metabolic Centers and Intelligent Health. In addition to practicing I.N.T.E.G.R.A.L. Health for many years, he remains committed to delivering Proactive Health to physicians and clients around the world.