The grapefruit diet is a low-calorie diet that involves eating grapefruit or drinking its juice at all meals. Only 800 calories are consumed daily.
The grapefruit diet is based on the theory that grapefruits contain a fat-burning enzyme that helps the body use fat more quickly. But this enzyme has never been identified. Weight loss from this diet is likely due to severe calorie restriction.
People sometimes use the grapefruit diet for obesity and other conditions, but there is no good scientific evidence to support these uses.
Interactions with grapefruit are well documented. Before adding it to your diet, check with your healthcare provider if you have any health conditions or if you take medications or supplements.
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