What is a common effect of fad diets?

Fad diets often promote quick weight loss through extreme restrictions or unbalanced eating patterns, leading to immediate but temporary results. These diets frequently become unsustainable over the long term because they can be impractical or unhealthy for many individuals. As a result, once the diet ends or is abandoned, people may revert to their previous eating habits, which can lead to regaining the weight they initially lost, and sometimes even more. This cycle of losing weight quickly followed by regaining it contributes to a lack of long-term success in weight management, making the short-term results accompanied by subsequent weight gain a common effect of these diets.

In contrast, options suggesting long-term success, healthy lifestyle transformation, or sustainable habits are not typical outcomes associated with fad dieting, as these diets generally do not encourage balanced nutrition or a holistic approach to health.