berto Villoldo, Ph.D., is a medical anthropologist, psychologist and shaman, who studied the spiritual practices of the Amazon and the Andes for more than 30 years. While at San Francisco State University, he founded the Biological Self-Regulation Laboratory to study how the mind creates psychosomatic health and disease.  Alberto is founder of the world-renowned Four Winds Society and of the Light Body School. In his teachings and writings, he shares the experience of infinity and its ability to heal and transform us, to free us from the temporal chains that keep us fettered to illness, old age and disease. He instructs individuals throughout the world in the practice of energy medicine. Alberto has written numerous bestselling books, including Power Up Your Brain: The Neuroscience of Enlightenment (with David Perlmutter MD), Shaman, Healer, Sage; and bestseller One Spirit Medicine.  His most recent book is Grow a New Body: How Spirit and Power Plant Nutrients Can Transform Your Health.