AHMA Past-President Alan Gaby, M.D. is one of the nation's foremost authorities on nutritional medicine and has provided expert testimony to the White House Commission on Complementary and Alternative Medicine on the cost-effectiveness of nutritional supplements. He is the author of several books and has written numerous scientific papers in the field of nutritional medicine. His latest book Nutritional Medicine was published in 2011, and is the result of 30 years of research, and analysis of 30,000 scientific papers.