The Science Behind Medifast

5 Medifast Meals and 1 Lean & Green Meal

Developed by an M.D., Medifast has been recommended by over 20,000 doctors since 1980. The Medifast 5 & 1 Plan is clinically proven to be safe and effective.

Medifast Meals are individually portioned, calorie- and carbohydrate-controlled, low-fat meal replacements. Every Medifast Meal is based on a similar nutritional "footprint" that provides just the right balance of protein, carbohydrates, and fiber. Medifast Meals are fortified with at least 24 vitamins and minerals for optimal nutrition.

After being on the Medifast 5 & 1 Plan just a few days, your body shifts to a mild fat-burning state so you can lose weight quickly while preserving muscle tissue.

Program principles

  • You eat six meals a day, once every two to three hours. Those six meals include five Medifast Meals and one Lean & Green Meal daily.
  • Medifast Meals are formulated to be filling and satisfying, so you don't feel hungry.
  • You lose weight fast - up to 2 to 5 lbs per week, on average.
  • Medifast Meals go with you anywhere, so the Medifast 5 & 1 Plan fits in with even the busiest lifestyles.

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

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

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