Myth: Certain foods, like grapefruit, celery, or cabbage soup, can burn fat and make you lose weight.
Fact: No foods can burn fat. Some foods with caffeine may speed up your metabolism (the way your body uses energy or calories) for a short time, but they do not cause weight loss. The best way to lose weight is to cut back on the number of calories you eat and be more physically active.
(Source: National Institute of Diabetes & Digestive & Kidney Diseases)