Dr. Mullin is an internist, gastroenterologist, and nutritionist. He is nationally and internationally renowned for his work in integrative gastroenterology and nutrition. Dr. Mullin has accumulated over 30 years of clinical experience in the field of integrative gastroenterology and earned his master’s degree in nutrition while in practice. He has authored and edited several books on nutrition including, The Gut Balance Revolution. He has been interviewed on radio and television and has contributed to many print and electronic media stories.