As most fruits are, grapefruits too are rich containers of Vitamin C. They are also potassium givers. Pink and red varieties of grapefruits could be preferred over the white ones because they confer two powerful antioxidants- Beta-carotene and Lycopene. Beta-carotene is converted by the body into Vitamin A whereas the Lycopene is known for its effect of reducing prostate cancer risks though its mechanism of action has not been well established. Grapefruits source bioflavonoids and other plant chemicals that protect against cancer and heart disease. They also contain pectin, a soluble fiber that helps lower blood cholesterol. Apart from the benefits and disadvantages this fruit has to offer, there also come certain misconceptions regarding its relation to weight loss.
Myth– Grapefruits possess powerful abilities to burn away the calories ingested by the body
Reality– Grapefruits satiate hunger with their high fiber content. At the same time, they could be included in a weight-loss diet owing to their less than 100 calories storage per serving.
Caution– Grapefruits, with abundant fiber content fills the stomach leaving hardly any space for more food. People wanting to lose weight adopt this method but end up suffering from nutritional deficiency from not having consumed other nutritional meals. People who are allergic to citrus fruits are allergic to grapefruits as well. Moreover, grapefruits should be completely avoided by people under certain medications. Grapefruits could either reduce the effectiveness of specific medications or accelerate the effects of drugs, the consequences being unwelcome adverse effects. Drugs which are likely to misbehave after contact with grapefruits are those with are used to lower blood pressure as well as those for treating anxiety, depression, high blood pressure, elevated lipids, etc. So, you might as well stay away from grapefruits while you take any drug until your doctor lets you do otherwise. Grapefruits used to be evaded in the past due to their tartness. But, an edible sweet glass of grapefruit juice could be made by squashing the red or pink grapefruits.