Jonathan Gelber, M.D., M.S., received his medical degree from the Mount Sinai School of Medicine in New York City and a Masters degree in biomedical engineering from Columbia University. He was trained in orthopedic surgery at Harbor-UCLA Medical Center and completed a sports medicine fellowship at the world-renowned Cleveland Clinic. A lifelong interest in combative sports has led him to a black belt in Shito-Ryu Karate, a blue belt in Gracie Jiu-Jitsu, and to become the founder of both FightMedicine.net and the Mixed Martial Arts Research Society. He has written numerous articles for MMA websites and magazines. He lives in New York.