Grapefruit is rich in cellulose and can be a secret weapon to lose weight. Researchers say that eating more citrus foods can help people suppress their appetite and effectively control their food intake. As long as you choose foods that contain a lot of cellulose and water, you can eat a lot, and you are not afraid of getting fat. These foods include fruits, vegetables, whole grains and beans. Drinking more soup is also an effective way. Among all fruits and vegetables, grapefruit and orange belong to one genus and two genera, which are rich in cellulose. The researchers said that these foods can make people feel full more easily, keep the blood sugar level balanced and control their appetite better. Carbohydrate diet is popular now, and some people think that dieters should eat more carbohydrates, which will not have a great impact on blood sugar concentration. The postprandial blood glucose level after food intake is closely related not only to the glycemic index, but also to the carbohydrate content in food. If the food with high glycemic index contains a small amount of carbohydrates, although it is easy to be converted into blood sugar, it has little effect on the overall level of blood sugar. Therefore, the GI value only reflects the quality of carbohydrates, but not the actual intake of carbohydrates. If the quality and content of carbohydrate intake are combined, a new concept, namely blood glucose load, is produced. The size of GI value is the product of GI value of food and its carbohydrate content. According to carbohydrate and its influence on blood sugar concentration, foods with blood sugar load lower than 10 are low glycemic load foods. The glycemic load index of grapefruit is 6. In a 12-week "grapefruit slimming" study, doctors pay close attention to factors such as weight and metabolism. Among 100 participants, those who ate half a grapefruit every meal lost an average of 3.6 pounds, and those who drank three glasses of grapefruit juice every day lost an average of 3.3 pounds. What's more exciting is that some people have lost more than ten kilograms. Grapefruit has been sought after by people before losing weight, and now there is scientific evidence to prove that this method is really feasible. The main researcher of the Nutrition and Metabolism Research Center said that as long as participants insist on eating grapefruit and drinking grapefruit juice, they can get unexpected results as long as they maintain a normal diet and slightly increase their exercise. Moreover, the researchers also found that eating grapefruit can also reduce the concentration of insulin in the body and help to lose weight. Low insulin content promotes the metabolism of body fat. Generally, the insulin concentration will increase after eating. If the increase of insulin concentration is relatively small, it can effectively promote the human body to digest food, convert food into energy, and less hoard it in the form of fat.