Eric Yarnell, ND, RH (AHG) graduated from Bastyr University in 1996 and is a professor of botanical medicine at Bastyr University. He has been in practice for 21 years, primarily in the fields of men’s health, urology, nephrology, and gastroenterology, with a heavy emphasis on using botanical medicines. Dr. Yarnell is chief creative officer of Healing Mountain Publishing, a provider of natural medicine textbooks, and is president of Heron Botanicals. He is a co-founder of the Boucher Institute of Naturopathic Medicine in Vancouver, BC. He previously served as chair of the department of botanical medicine at the Southwest College of Naturopathic Medicine and helped edit the Journal of Naturopathic Medicine. His published works include Clinical Botanical Medicine (second edition), Natural Approach to Urology (second edition), Natural Approach to Prostate Conditions (second edition), Natural Approach to Gastroenterology (second edition), The A-Z Guide to Drug-Herb-Vitamin Interactions, and The Natural Pharmacy.