Final answer:
A fad diet is a weight-loss plan that is popular only for a short time and lacks scientific evidence or long-term sustainability.
Step-by-step explanation:
A fad diet is a weight-loss plan that becomes popular for a short time but lacks scientific evidence or long-term sustainability.
These diets often promise quick and drastic results, but they can be ineffective or even harmful. Examples of fad diets include the cabbage soup diet, the grapefruit diet, or any extreme low-carbohydrate or low-fat diet.
It is important to approach weight loss with a sustainable and balanced approach that includes a healthy diet, regular exercise, and a focus on overall well-being.
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