Studies have shown that if you eat some fruits or drink 1-2 cups of juice 20-40 minutes before meals, you can prevent obesity caused by overeating. Because fruit or juice is rich in fructose and glucose, it can be quickly absorbed by the human body, so that the blood sugar concentration increases and the appetite decreases. The crude fiber in fruit can also make the stomach feel full. In addition, eating fruit before meals can significantly reduce the demand for fatty foods, thus indirectly preventing the adverse consequences of excessive fat accumulation in the body. But many fruits, such as persimmons, hawthorn, almonds and pineapples, can't be eaten on an empty stomach. In order to lose weight, when eating fruits before meals, it is best to choose fruits that are not too sour and astringent, such as apples, pears, bananas, grapes, watermelons and melons.

It is difficult to lose weight after eating fruit. Because eating fruit after a meal is equivalent to eating more sugar, which is easy to be converted into fat and stored in the body, and may also gain weight. Especially don't eat a lot of fruit after dinner, because synthetic fat is most likely to accumulate in the body after eating at night. But some fruits can promote digestion, such as pineapple and kiwi fruit rich in protease, lemon and hawthorn rich in organic acids. For this kind of fruit, you can eat it about an hour after meals.

Third, the consumption of fruit:

Most people think that fruits are rich in cellulose, almost free of fat and protein, and can be eaten without restraint. Actually, this is a misunderstanding. Fruit is not a low-energy food. Because it tastes sweet and easy to eat more, the sugar in it will be converted into fat and piled up. For example, every100g strawberry has about 30 calories. If you like strawberries and can eat a lot at a time, the calories you consume are amazing. For example, if you eat half a medium-sized watermelon (the pulp weighs about 2 kilograms), you will unconsciously consume 680 calories, which is equivalent to about three bowls of rice. Therefore, when eating fruit diet meals, we should control the consumption of fruit.

There are some so-called fast fruit weight loss methods, such as eating bananas dipped in honey to lose weight quickly, replacing one meal in a day with grapefruit to help lose weight, and "apple meal" to lose weight. With these diet methods, you will consume far less calories than dinner, and naturally you will lose weight soon. But don't eat other high-calorie things during the execution. Your body will be short of protein, minerals and other nutrients. Lose weight so fast, the body will have adverse reactions because it has not been adjusted well. Once you give up the fruit diet, your weight will rebound quickly, and everyone needs to have a correct understanding.