A weight-loss program is probably a fad diet if it ________.

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All of these options are common red flags associated with fad diets. A weight-loss program that recommends expensive nutrient supplements or guarantees weight-loss success for everyone is likely not based on sound scientific evidence. Similarly, using testimonials from famous people to promote a diet may suggest that the diet's proponents are relying on hype rather than objective data. Finally, a diet that promises quick weight loss may not be sustainable over the long run and may be unhealthy or impractical for many people.

A Weight-Loss Program Is Probably a Fad Diet If It