The Grapefruit Diet for Weight Loss

The Grapefruit Diet has been into news among the weight losers for a long time since at least the 1930s. A instant, quick weight loss plan also known as the Hollywood Diet or more often the Mayo Diet, the Grapefruit Diet astonishingly has continued to exist the test of time, being circulated by word of mouth, online and in book form yet no one claims ownership of the plan

The idea of the Grapefruit Diet is based on a supposed ingredient in grapefruits, that, when eaten with protein, supposedly activates fat burning and causes weight loss. The diet is designed to promote fast weight loss; unfortunately, the weight loss is primarily from fluids and not fat and generally returns as soon as the dieter goes off the diet. This low-carbohydrate, moderate-protein diet is another low-calorie diet averaging 800-1,000 calories in most versions. Most people will lose weight with or without grapefruit on the Grapefruit Diet when calories are dramatically reduced to this level. Unfortunately, there are no explanations for how the mysterious grapefruit enzyme works and why it is only contained in grapefruit and not other citrus fruits. No scientific studies to date substantiate grapefruit’s power to burn fat.

It was found in a medical study of Citrus found that the addition of a half grapefruit or 4 ounces of juice with meals resulted in an average weight loss of more than 3 pounds in 12 weeks, with some participants losing 10 pounds. Researchers suspect the addition of grapefruit to the otherwise healthy meals reduced insulin levels and promoted a small weight loss. Study participants also "slightly enhanced" their physical activity, which could also explain the weight loss.

While grapefruit is a very nutritious low-calorie fruit which is 66-84 calories per serving, loaded with vitamin C and fiber, it is not a mysterious fat burner. The low glycemic index, high fiber, and low calorie nature of the fruit may reduce insulin levels and help dieters feel full and eat fewer calories. Beyond that, no magic appears to be at work with the Grapefruit Diet. Experts say one small study is not enough to pin magical powers on this fruit. Current dieting studies suggest that dieters should focus on eating carbohydrates that have a low impact on blood sugar. This has led to the concept of Glycemic Load (GL), a ranking of food based on its carbohydrate content and its impact on blood sugar level. A GL below 10 is considered low. The GL for a half grapefruit is 6 and that is why it has been found contributing in weight loss.