Alberto Villoldo, Ph.D., was born in Cuba, where he was exposed to Afro-Indian healing traditions at an early age. While pursuing his doctorial studies in psychology and medical anthropology, he travelled throughout the Amazon and the Andes, researching Native American healing techniques. He later directed the Biological Self-Regulation Laboratory at San Francisco State University, where he investigated mind-body medicine and the neuro-physiology of healing. He founded and directs the Energy Medicine School at the Four Winds Society, and teaches energy medicine to thousands of nurses and physicians, psychotherapists and lay persons every year. He is an internationally recognized leader in the field of alternative medicine and shamanic studies, and has written ten other books. He lives in Los Angeles.