1. Tea + Meat = Prone to Constipation
The abundant protein in meat can undergo a chemical reaction with the tannic acid in tea, forming new substances that affect intestinal peristalsis, thereby prolonging the retention time of feces in the intestines.
After eating pork, dog meat, mutton, or donkey meat, one should wait 2-3 hours before drinking tea. Otherwise, it can easily cause constipation and increase the possibility of the body absorbing toxic and carcinogenic substances, endangering health.

2. Tea + Chicken Liver = Reduces Iron Absorption
Chicken liver is rich in iron, and tea contains tannic acid. Drinking tea while eating chicken liver reduces the body's absorption of iron.
3. Tea + Eggs = Affects Protein Absorption
Eggs are high in protein. Tea contains relatively high amounts of tannic acid, which reacts with the protein in food to form indigestible coagulants, affecting the body's absorption of protein.
Experts point out that the combination of tea and eggs can irritate the stomach. Consuming too many tea eggs can lead to anemia symptoms, easily cause calcium deficiency and osteoporosis, and is generally not beneficial for health.

4. Tea + Medicine = Affects Drug Absorption
Tea should not be used to take medicine as it affects drug absorption. The tannic acid in tea can react chemically with certain drugs (such as ferrous sulfate tablets, ferric ammonium citrate, berberine, etc.) to form precipitates, counteracting or weakening the body's absorption of the drug.
Actually, not all drugs react with tea, but because there are many types of drugs and it's difficult to know them all, doctors advise against taking medicine with tea to avoid unnecessary complications.
5. Tea + Kelp = Gastrointestinal Discomfort
Both kelp and tea are cold-natured foods. Consuming kelp while drinking tea can cause stomach cold.
6. Tea + Crab = Indigestion
Do not drink tea while eating crab or within one hour after. Tea dilutes stomach acid, and it can also cause certain components of the crab to coagulate, which is not conducive to digestion and absorption and may cause abdominal pain or diarrhea.
7. Tea + Sugar = Increases Heart Burden
Tea has a bitter taste and cold nature. The purpose of drinking tea is to use its bitterness to stimulate the digestive glands, promote digestive juice secretion, and enhance digestive function.
Another purpose is to utilize its cooling property to achieve heat-clearing and detoxifying effects. Adding sugar to tea inhibits these functions.

8. Tea + Alcohol = Stimulates the Heart, Harms Kidneys
Drinking tea after alcohol: theophylline in tea has a diuretic effect. However, if acetaldehyde, converted from alcohol in the body, has not fully decomposed, it can enter the kidneys due to theophylline's diuretic action. Acetaldehyde is highly irritating to the kidneys, which is very detrimental.
This can lead to symptoms like kidney cold, impotence, frequent turbid urination, and testicular pain. Furthermore, strong tea excites the heart. Drinking tea after alcohol gives the heart dual stimulation, further加重ing the heart's burden.
9. Tea + Ginseng = Wasted Effort
American ginseng has the effects of replenishing qi, nourishing yin, clearing heat, and promoting fluid production. Because its nature is mild, it does not conflict with cooling tea. However, this is not the case with Panax ginseng slices. Panax ginseng is hot in nature. When encountering cooling tea, their effects counteract each other, rendering consumption ineffective.
10. Hot Tea + Cold Drinks = Dental Problems, Also Harmful to Stomach and Intestines
The drastic change from hot to cold not only stimulates the teeth, making them prone to dental issues, but is also harmful to the stomach and intestines. Cold drinks and hot tea should be consumed at least 30 minutes apart.