Elson Haas, MD is a long-time integrative family physician who is the founder and director of Preventive Medical Center of Marin, an integrative center in San Rafael, CA. Elson is also the author of a dozen books on health, nutrition and detox, including Staying Healthy with the Seasons, Staying Healthy with Nutrition, The Detox Diet, Ultimate Immunity, and Staying Healthy with NEW Medicine: Integrating Natural, Eastern and Western Medicines for Optimal Health. ElsonHaasMD.com https://elsonhaasmd.com/ Preventive Medical Center of Marin http://www.preventivemedicalcenterofmarin.com/