verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style

What is a fad diet?

A fad diet is an eating plan that promises rapid weight loss or other health benefits through restrictive, unconventional, or narrowly focused dietary practices. Fad diets often eliminate certain foods or food groups, emphasize specific ingredients, or promote simplified explanations of nutrition and metabolism. Although some may produce short-term results, many lack strong scientific support and can be difficult to maintain over time.