The “Medi” in Medifast:

The brand designed, used, and recommended by doctors

About Medifast:

  • Created by William Vitale, M.D. and originally sold directly to doctors
  • Scientifically formulated to be safe, filling, and nutritious
  • Clinically proven to help you lose weight fast
  • Products and programs recommended by over 20,000 doctors and used by over a million customers since 1980

Scientific Advisory Board
This cross-disciplinary panel reviews the effectiveness and safety of Medifast products and programs, and assists in developing new ones.


Walter Eugene Egerton III

Chief Medical Officer, Maryland General Hospital

Debra L. Miller, Ph.D.
Director of Nutrition at The Hershey Company

John P. Foreyt, Ph.D.
Professor, Baylor College of Medicine
Department of Psychiatry and Behavioral Sciences
Department of Medicine

Jeff S. Volek, Ph.D., RD
Human Performance Laboratory
Associate Professor, Department of Kinesiology
University of Connecticut

Lawrence J. Cheskin, M.D., FACP
Director, Johns Hopkins Weight Management Center

Sylvia B. Rowe, MA
President, SR Strategy
Adjunct Professor, Tufts Friedman School of Nutrition Science & Policy
Adjunct Professor, University of Massachusetts Amherst

Guy H. Johnson, Ph.D.Alison Duncan, Ph.D., RD
President, Johnson Nutrition Solutions, LLC
Executive Director, the McCormick Science Institute