Grapefruit juice aids in more efficient metabolism of sugars and has a high fiber content with a low glycemic load. It has been proven that a person can eat large quantities of food without consuming too many calories by choosing foods high in fiber and water content such as fruit, vegetables, whole grains, legumes and soups.
In a study by the Nutrition and Metabolic Research Center at Scripps Clinic, researchers have confirmed that the simple act of adding grapefruit and grapefruit juice to one's diet can result in weight loss. The grapefruit diet has been around since the 1930s.
Grapefruit juice also enhances the body’s absorption of coQ10, an energy compound vital to our cells and boosts the anti-cancer effect of certain drugs.
Scientific study: A U.S. study looked at the benefits of grapefruit by dividing 100 obese people into three groups: one group was given half a grapefruit before each meal, another had a glass of grapefruit juice, while the remaining third had no grapefruit.
After 12 weeks, those eating grapefruit had lost an average of 3.6lb and those drinking grapefruit juice lost an average of 3.3lb. But those in the control group who consumed no grapefruit lost only an average of 0.5lb.