Things not to do after meals

    　1. Don’t eat fruit immediately

　　Fruits contain brass-like compounds, which are converted into dihydroxybenzoic acid by intestinal bacteria after ingestion. Ingested vegetables contain thiocyanates. Under the action of these two chemicals, they interfere with thyroid function and can lead to non-iodine goiter.

　　2. Don’t drink tea immediately

　　Because the tannins contained in tea can combine with protein and iron in food to produce colloids or precipitated substances that are not easily absorbed, iron deficiency may occur in the long run. anemia and protein deficiency diseases.

　　3. Don’t drink more water immediately

　　Drinking water immediately will increase the intragastric pressure, causing the food in the stomach to enter the small intestine before digestion. In addition, drinking water dilutes the gastric juice, weakens the digestive power of the gastric juice, is not conducive to the sterilization of gastric acid, and easily causes gastrointestinal tract disease。

　　4. Don’t smoke immediately

　　Because gastric peristalsis speeds up after a meal, blood circulation increases, and capillaries dilate, which promotes the absorption of harmful substances in cigarettes. Smoking after a meal absorbs more than ten times the harmful substances in cigarettes than usual smoking. Smokers should pay attention. healthy Bar.

　　5. Don’t drink soda right away

　　After soda enters the stomach, it dilutes gastric juice, affects digestion, reduces appetite, produces carbon dioxide, increases intragastric pressure, and causes acute gastric dilation.

　　6. Don’t eat sweets right away

　　Sugar is easily converted into fat, causing obesity. Sugar also reduces the secretion function of pancreatic islets and promotes the occurrence of diabetes.

　　7. Do not do strenuous exercise immediately

　　During strenuous exercise, the blood flow in the limbs increases, which affects the blood supply of the gastrointestinal tract, affects the secretion of gastric juice, and makes food poorly digested. At the same time, the stomach becomes larger after meals, and exercise can cause gastroptosis.

　　8. Don’t read a book immediately

　　Reading immediately after a meal will relatively reduce the blood volume in the gastrointestinal tract and affect the secretion of gastric juice. Over time, symptoms such as indigestion, bloating, and stomach pain will occur.

　　9. Don’t take a shower immediately

　　Because when taking a bath skin The capillaries are dilated and congested, which reduces the blood flow in the digestive tract and affects the digestion and absorption of food.

　　So how long should it take after a meal to engage in the above activities? The residence time of food in the stomach is about 1 hour for carbohydrates, 2-3 hours for protein, and 5-6 hours for fat, so it should be at least 1 hour after a meal before engaging in the above activities. But you also need to be flexible. For example, when you feel thirsty, you should drink some water after a meal, and you can't just do it mechanically.