Eating grapefruit can play a certain weight loss effect, but not in the real sense of weight loss. Because weight loss requires the body to consume more calories than it takes in, only then can the effect of weight loss be achieved, so the real sense of weight loss is through diet and exercise two-way conditioning, can be achieved. If you simply eat grapefruit, for weight loss only auxiliary role can not achieve the purpose of weight loss, but if the daily meals are replaced with grapefruit and only eat grapefruit, which can also play a weight loss effect. But this is a diet to lose weight will also produce a certain damage to the body, so it is not recommended to lose weight in this way. It is recommended that patients can eat grapefruit before meals, which can play a satiating role and also help digestion, fat is not easy to accumulate, in addition to a variety of fruits mixed together to eat more comprehensive nutrition.