Alberto Villoldo, Ph.D., is a medical anthropologist and psychologist who studied the shamanic healing practices of the Amazon and the Andes for more than 25 years. He is the founder of the Four Winds Society, which teaches the philosophy and practice of energy medicine. He also directs the Center for Energy Medicine at Los Lobos, Chile, where he investigates and practices the neuroscience of enlightenment. Dr. Villoldo is the author of numerous best-selling books, including Power up Your Brain, (with David Perlmutter, MD), Shaman, Healer, Sage, and the WSJ’s top ten best-seller One Spirit Medicine, which merges the ancient healing traditions of the Peruvian shamans with modern scientific breakthroughs.