There is no big problem with eating only grapefruit for dinner, but it is recommended to make sure not to skip the main meal for dinner for a long time and eat only grapefruit. Some people who want to lose weight will choose not to eat dinner and only eat fruit. A short period of time to adhere to a period of time is possible, but do not keep this for a long time, if the long-term persistence of the words will have a negative impact on health. Grapefruit is a relatively nutrient-rich fruit, low calorie, low sugar, for people who want to lose weight dinner only eat grapefruit is a good choice. But everything has its advantages and disadvantages, the choice to eat only grapefruit for dinner to achieve the purpose of weight loss, but long-term, if this will make too much gastric acid secretion, stimulating the gastric mucosa caused by stomach discomfort. At the same time grapefruit also has the role of laxative and intestinal, eat more, it will be easier to cause diarrhea. Therefore, it is recommended that grapefruit do not eat too much at once.