People become overweight for many reasons. Health experts have found genetic, social, emotional, and environmental factors all play a role in obesity. It takes more than just counting calories to successfully lose weight and keep it off. The OPTIFAST Program recognizes these facts and treats the whole person not just their weight. It utilizes the expertise of physicians, registered dietitians, and trained counselors in combination with high quality, calorie controlled, nutritional formulas and bars to address the many different causes of obesity. The goals of the OPTIFAST Program are to help participants achieve and maintain significant weight loss in order to improve health, lower weight-related health risks, and enhance their quality of life.


The OPTIFAST Program treats the whole person, not just his/her eating habits. Obesity is a complex disease caused by a combination of genetic, environmental and emotional/social factors. It often contributes to the development of a variety of other health problems such as high blood pressure and type 2 diabetes. With the help of specially trained health care providers, OPTIFAST treatment addresses the causes of obesity as well as its consequences. Choose OPTIFAST and join more than one million people who have enjoyed the benefits that OPTIFAST can provide.

The benefits of OPTIFAST treatment include:

  • First of its kind: OPTIFAST was the first comprehensive formula diet program for weight loss. It remains the gold standard for this type of obesity treatment and is the program that others try to be like.
  • Long Term Experience: over one million people treated since 1974.
  • Proven Therapy: over 80 studies published in recognized medical journals. 52 lb. average weight loss documented in over 20,000 patients completing the OPTIFAST program.
  • Ongoing Support: included both during and after weight loss to help you achieve and maintain success.
  • Lasting Success: 5 year follow-up studies show that over 50% of people who complete the OPTIFAST Program are able to keep enough weight off to improve their health long-term.
  • Professional Service: provided by highly qualified health care professionals specially trained in the treatment of obesity.