Gabriel Cousens, M.D., is a medical doctor, psychiatrist, family therapist, and licensed homeopathic physician. He received his medical degree in 1969 from Columbia Medical School and completed his psychiatry residency in 1973. He was the chief mental health consultant for Sonoma County Operation Head Start and has served on the board of trustees of the American Holistic Medical Association. He speaks internationally on health topics and is the author of numerous books and articles. Dr. Cousens is the founder/director of the Tree of Life Rejuvenation Center, an innovative holistic retreat center for the renewal of body, mind, and spirit, based in Patagonia, Arizona. Mark Mayell has written on natural medicine for twenty years. As the editor of Natural Health magazine, he guided it to become the leading national magazine of its kind. He is the author of four hooks, including Natural Energy. He is on the advisory board of the American Holistic Health Association and lives with his family in Wellesley, Massachusetts. Gabriel Cousens, M.D., is a medical doctor, psychiatrist, family therapist, and licensed homeopathic physician. He received his medical degree in 1969 from Columbia Medical School and completed his psychiatry residency in 1973. He was the chief mental health consultant for Sonoma County Operation Head Start and has served on the board of trustees of the American Holistic Medical Association. He speaks internationally on health topics and is the author of numerous books and articles. Dr. Cousens is the founder/director of the Tree of Life Rejuvenation Center, an innovative holistic retreat center for the renewal of body, mind, and spirit, based in Patagonia, Arizona. Mark Mayell has written on natural medicine for twenty years. As the editor of Natural Health magazine, he guided it to become the leading national magazine of its kind. He is the author of four hooks, including Natural Energy. He is on the advisory board of the American Holistic Health Association and lives with his family in Wellesley, Massachusetts.