You can eat fruit directly for breakfast in the morning ... it is best to eat apples. At noon, it is best to eat grapes and watermelons one hour after meals ... It is best to eat bananas one hour after meals at night, which is helpful for digestion. This is very helpful for people with bad stomachs ... it is customary to think that eating fruit after meals is good. But a few days ago, some scientists put forward different views that eating fruit after meals will lead to long-term disorder of digestive function and easily lead to diarrhea. If you change the time to eat fruit to one hour before meals, you can keep the human immune function normal. If you insist on eating fruit after meals, you must stay for an hour before eating. Many fruits can't be eaten on an empty stomach: after eating a lot of bananas on an empty stomach, they will also combine with hydrochloric acid in the stomach to form a substance that is not conducive to digestion; Persimmon is sweet, soft and delicious, rich in nutrition, but it has astringent effect. Persimmon stone will be formed when it meets gastric acid, which can neither be digested nor discharged. After eating a lot on an empty stomach, symptoms such as nausea and vomiting will appear in light cases, and persimmon stones must be removed surgically in severe cases; Hawthorn contains a lot of tannic acid, and eating it on an empty stomach will stimulate the stomach. Longan fever, hypertension, heart disease patients should not be greedy. Eating fruit half an hour before meals or one hour after meals is beneficial to the absorption of vitamins. If you eat fruit immediately after a meal, you will stay in your stomach for too long, which will affect the absorption of vitamins. Therefore, it is not appropriate to eat immediately after meals. Eating some fruit before meals will reduce appetite and is suitable for people who want to lose weight. Fruits not suitable for eating before meals: tomatoes, persimmons, oranges, hawthorn, bananas, etc. Can't eat on an empty stomach. Tomatoes contain pectin, pectin, soluble astringent and so on. If you eat on an empty stomach, it will combine with gastric acid, increase the pressure in the stomach and cause pain. Persimmon tannin and gastric acid condense to form "persimmon stone". At the same time, patients with gallstones and kidney calculi should be careful when eating persimmons, so as not to worsen their condition. Oranges contain a lot of sugar and organic acids, and it is easy to get bloated and sour when eaten on an empty stomach. Hawthorn tastes sour, and eating on an empty stomach will cause stomach pain; Bananas are high in potassium and magnesium. Eating bananas on an empty stomach will increase the content of magnesium in the blood and inhibit the cardiovascular system.