2. Many ingredients in fruit are water-soluble. In the fasting state, digestion and absorption do not require the mixing of complex digestive juices, and can quickly enter the small intestine through the stomach for absorption.

3. Fruit is a low-calorie food, and it is easier to grasp the total intake by eating advanced low-calorie food.

4. Many fruits are easily oxidized and spoiled. Eating fruit first can shorten its residence time in the stomach and reduce the degree of oxidative corruption.

5, but some fruits are still not recommended to eat before meals, as follows: bananas are cold, and those who are afraid of cold should not eat on an empty stomach. Eating a lot of persimmons on an empty stomach is easy to form stones.

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Not suitable for eating on an empty stomach

1, fresh litchi: litchi has high sugar content. Eating on an empty stomach will stimulate the gastric mucosa, leading to stomach pain and bloating. And eating too much fresh litchi on an empty stomach will lead to "hyperosmotic coma" due to the sudden infiltration of too high sugar into the body.

2, bananas: contains a lot of magnesium, if you eat a lot of bananas on an empty stomach, it will suddenly increase the magnesium content in the blood, leading to the imbalance of magnesium and calcium in human blood, which has an inhibitory effect on the cardiovascular system and is not conducive to health.

3, oranges: contains a lot of sugar and organic acids, eating oranges on an empty stomach will stimulate the gastric mucosa, leading to an increase in gastric acid, so that the spleen and stomach are full and pantothenic.

4. Persimmon: On an empty stomach, the stomach contains a lot of gastric acid, which easily reacts with persimmon gum, gum, pectin and soluble astringent contained in persimmon to form gastrolith, causing heartburn, nausea, vomiting, bloating, gastric ulcer, and even stomach perforation, gastric bleeding and other diseases.

5, black dates: contains a lot of pectin and tannic acid, which is easy to combine with gastric acid in the human body, and there are lumps in the stomach. Especially don't eat too much before going to bed, and people with chronic gastrointestinal diseases had better not eat.

6, hawthorn: sour taste, has the effect of promoting qi and digestion, but if you eat on an empty stomach, it will not only consume gas, but also enhance hunger and aggravate stomach problems.

7. Pineapple: It contains quite strong proteolytic enzymes. If you eat before meals, it is easy to cause stomach wall damage.

Artificial toxin

1, Mango: Green mango is covered with quicklime to make its skin look like Huang Chengcheng, but it doesn't taste like mango, and there is also the problem of excessive use of preservatives.

2. Peaches: Soak in industrial citric acid. Peaches are soaked in industrial citric acid, and they are bright red and not perishable. This chemical residue will damage the nervous system, induce allergic diseases and even cause cancer. Half-cooked crisp peach, adding alum, sweetener, alcohol, etc. Make it crisp and sweet. Alum is mainly composed of aluminum sulfate. Long-term consumption will lead to hyperosteogeny, memory loss, dementia, decreased skin elasticity and increased wrinkles. When white peaches are smoked with sulfur, there will be sulfur dioxide residue.

3. Red dates: dyed with chemicals. Boil the water, no matter how green the jujube is, soak it in boiling water and it will turn red immediately. There are also fruit sellers who dye with chemical dyes and wax with industrial paraffin, which makes jujube toxic.

4. Longan: Spray sulfur to brighten. Spray sulfuric acid or acid solution for soaking to make it bright. Sulfuric acid is corrosive and will burn people's digestive tract. It is also easy to cause colds, diarrhea and severe cough.

5. Pear: Growth promoter makes it precocious. It is precocious with expansion hormone and growth promoter, and then bleached and dyed with bleaching powder and colorant (lemon yellow). The treated pear juice is not so tasteless, sometimes accompanied by peculiar smell and rancid smell. This kind of poisonous pear has a short storage time and is easy to rot.

6. Banana: Ripen with ammonia. Ripening with ammonia or sulfur dioxide, the skin of this banana is bright yellow and looks good, but the flesh is hard and not sweet. Sulfur dioxide causes damage to human nervous system, and also affects liver and kidney function.

7. Watermelon: The swelling agent promotes growth. Excessive use of ripening agents, swelling agents and highly toxic pesticides, the stripes on this watermelon skin are uneven, and the flesh is fresh after cutting, and the melon seeds are white and smelly.

References:

Baidu encyclopedia-fruit