Dr. Merkle graduated from Logan College of Chiropractic in 1982. Following graduation he received his diplomates in both Internal Medicine (DABCI) and Nutrition (DACBN), along with becoming a certified clinical nutritionist (CCN). Host of “Back To Health: Your Guide to Better Living” radio show on WHIO 1290 A.M., Saturday’s from 11-12 noon for the past 10 years. And co-host as the nutritional expert, of “Natural Food’s Plus” radio show on WDAO 1210 A.M., Tuesdays from 9-10 A.M. for the past 8 years. He has maintained a successful practice for the past 20 years while teaching seminars to professional and community audiences on a wide range of health topics.