Elson M. Haas, MD, is an integrated medicine practitioner with more than thirty-five years of experience. He is founder and director of the Preventive Medical Center of Marin in San Rafael, CA. Haas is author of seven popular books on health and nutrition, including Staying Healthy with the Seasons, Staying Healthy with Nutrition, and The New Detox Diet. Visit him online at www.elsonhaas.com.