William B. Ferril, M.D. earned a Bachelor of Science degree in Biochemistry and Doctorate in Medicine at UC Davis, California. He completed his postgraduate education at Sacred Heart Medical Center in Spokane, Washington in 1986. For most of the past 30 years, he has practiced on the Flathead Indian Reservation. It was there that he gained experience for the topics in his books and treatment plans. He works with chiropractors, acupuncturists, homeopaths and naturopaths attempting to bridge forgotten science with the mainstream. He has written four books: The Body Heals, Glandular Failure-Caused Obesity, Healing Has One Side Effect, and The Unseen Hand.
Dr. Ferril co-founded the Bio-identical Hormone Society with Jonathan Wright, M.D. in January, 2005. In this capacity, he lectured hundreds of doctors on the biochemistry of the steroids and the best testing methods. Since childhood he has remained fascinated with answering the mystery for why some people age gracefully while others do not. The biochemistry of the steroids provides part of the answer.
His wife, Brenda, received her Doctorate at Western States Chiropractic College in Portland, Oregon. They live with their sons in Western Montana.