Yes, but also pay attention to exercise, to walk more and less sitting, eating grapefruit does have the effect of weight loss, but also reasonable diet. Diet plus exercise is the king. In addition, I heard that if you do not want to exercise or diet, you can try the bitter melon diet, eat 2 to 3 (obese people eat 5 to 6) raw bitter melon every day, do not use any seasoning, that is, remove the seeds and eat directly raw.