I. Do not eat fruit immediately.
Fruits contain flavonoid compounds, which are converted to dihydroxybenzoic acid by intestinal bacteria. When combined with thiocyanates from vegetables, these substances can interfere with thyroid function and lead to non-iodine-based goiter.
II. Do not drink tea immediately.
Tannins in tea can bind with protein and iron in food, forming substances that are difficult to absorb. Over time, this can lead to iron-deficiency anemia and protein deficiency.
III. Do not smoke immediately.
After a meal, stomach peristalsis accelerates, blood circulation increases, and capillaries dilate, promoting the absorption of harmful substances in cigarettes. Smoking after a meal can absorb over ten times more harmful substances than smoking at other times. Smokers, please be mindful of your health.
IV. Do not drink a lot of water immediately.
Drinking water immediately after a meal increases stomach pressure, causing undigested food to enter the small intestine prematurely. Additionally, water dilutes gastric juice, weakening its digestive capacity and hindering the bactericidal effects of stomach acid, which can easily lead to gastrointestinal diseases.
V. Do not drink soda immediately.
When soda enters the stomach, it dilutes gastric juice, affects digestion, reduces appetite, and produces carbon dioxide, which increases stomach pressure and can lead to acute gastric dilation.
VI. Do not eat sugar immediately.
Sugar is easily converted into fat, leading to obesity. It can also impair the function of insulin-secreting cells, promoting the onset of diabetes.
VII. Do not engage in strenuous exercise immediately.
During strenuous exercise, blood flow to the limbs increases, affecting the blood supply to the gastrointestinal tract and the secretion of gastric juice, leading to poor digestion. Additionally, the stomach is larger after a meal, and exercising can cause gastric ptosis (stomach sagging).
VIII. Do not read immediately.
Reading immediately after a meal reduces blood flow to the gastrointestinal tract and affects gastric juice secretion. Over time, this can lead to indigestion, bloating, and stomach pain.
IX. Do not bathe immediately.
Bathing causes the skin's capillaries to dilate and充血, which reduces blood flow to the digestive tract and affects the digestion and absorption of food.
So, how long after a meal should you wait to engage in the above activities? The time food stays in the stomach is approximately 1 hour for carbohydrates, 2-3 hours for protein, and 5-6 hours for fat. Therefore, you should wait at least 1 hour after a meal. However, this should be applied flexibly. For example, if you feel thirsty, you should drink some water after your meal and not rigidly follow the rule.