You can eat it every day. But you can't eat more. Grapefruit has a high nutritional value, and is rich in protein, organic acids, vitamins and essential elements such as calcium, phosphorus, magnesium and sodium, which is incomparable to other fruits. Every 100g grapefruit contains 0.7g of protein, 0.6g of fat and 57kcal of calories.

Grapefruit not only has high nutritional value, but also has the effects of invigorating stomach, moistening lung, enriching blood, clearing bowel and relaxing bowels, which can promote wound healing and has a good auxiliary effect on septicemia. In addition, grapefruit contains glucocorticoids, a physiologically active substance, which can reduce blood viscosity and reduce thrombosis, so it also has a good preventive effect on cerebrovascular diseases, such as cerebral thrombosis and stroke. Fresh pomelo meat is an ideal food for diabetic patients because it contains insulin-like components. Motherland medicine also believes that grapefruit is sweet and sour, cold in nature, and has the effects of regulating qi and resolving phlegm, moistening lung and clearing intestine, enriching blood and strengthening spleen, which can cure anorexia, light mouth and indigestion, help digestion, resolve phlegm and quench thirst, regulate qi and disperse stagnation.

Eat a big petal (about 50g) every day.

Grapefruit that is too bitter is not suitable for eating.

Grapefruit is cold, and people with deficiency and cold should not eat more.

but

If you eat too much grapefruit at one time, it will not only affect the detoxification of the liver, but also cause other adverse reactions, even poisoning, including dizziness, nausea, palpitation, tachycardia, fatigue, low blood pressure and other symptoms. Eating grapefruit or drinking grapefruit juice during taking the antiallergic drug Terfenadine is particularly dangerous, which can lead to arrhythmia and even sudden death in severe cases. There are many drugs that can interact with grapefruit, such as calcium antagonists such as nifedipine, verapamil and diltiazem, antipsychotics such as clozapine, gastrointestinal drugs such as cisapride, immunosuppressants such as cyclosporine A and central stimulants such as caffeine. Experts pointed out that when taking these drugs, just drinking a glass of grapefruit juice may cause the above effects. Therefore, medical experts remind patients not to eat grapefruit or drink grapefruit juice when taking medicine, especially elderly patients, in case of accidents.