Does Grapefruit Juice Burn Belly Fat?

Although no food literally burns belly fat -- your body takes care of that via a complex oxidation process -- some evidence suggests that grapefruit juice may aid weight loss, resulting in a proportionately smaller stomach. More research is needed, however, and the most dependable way to achieve a slimmer waistline is still to reduce calorie intake and engage in regular physical activity.

Grapefruit Juice and Weight

In a study published in the "Journal of Medicinal Food" in 2006, researchers had subjects consume either a placebo or grapefruit in fresh, juice or capsule form. The fresh-grapefruit group lost an average of 3.5 pounds after 12 weeks, while the grapefruit-juice group lost 3.3 pounds and the grapefruit-capsule group lost 2.4 pounds. The placebo group lost just over half a pound, indicating the grapefruit helped participants lose weight. Researchers could not explain this effect, but did note that grapefruit improved insulin resistance.

Preloading with Grapefuit Juice

Another study, published in "Nutrition and Metabolism" in 2011, found that "preloading" before meals by drinking grapefruit juice, eating grapefruit or drinking water with added calories to match the other preloads led to reduced overall calorie consumption and faster weight loss. However, the water worked equally well as grapefruit and grapefruit juice in this study.