Clinical Studies

Other weight-loss plans can say they're safe and effective, but Medifast has proof.

Our Clinical Studies Brochure provides summaries of scientific studies, which include both peer-reviewed research (consisting of prospective controlled clinical trials and retrospective studies) and in-house clinical data. Feel free to share this information with your physician.

Clinical Studies

Other weight-loss plans can say they're safe and effective, but Medifast has proof.

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Medifast makes no claim that these results are representative of all participants on the Medifast Program. Medifast recommends you consult with a physician before starting a weight-loss program. Individual results will vary. Medifast is the brand recommended by more than 20,000 doctors since 1980. Typical weight loss on the Medifast 5 & 1 Plan® is 2-5 lbs per week for the first two weeks and 1-2 lbs per week thereafter. Medifast Advantage: Minimum purchase of $150 required to qualify for free standard shipping offer. First orders over $250 receive 28 free meals. Second orders over $250 receive an additional 28 free meals. See Medifast Advantage terms and conditions for complete details.