1. Drinking New Tea
Because new tea has a short storage time, it contains a relatively high amount of substances such as unoxidized polyphenols, aldehydes, and alcohols, which have a strong stimulating effect on the gastrointestinal mucosa and can easily induce stomach problems. Therefore, new tea should be consumed in moderation, and new tea stored for less than half a month should be avoided.
2. Drinking Tea on an Empty Stomach
Drinking tea on an empty stomach can dilute gastric acid, reduce digestive function, and lead to a high rate of water absorption. This causes a large amount of undesirable components in the tea to enter the bloodstream, triggering symptoms such as dizziness, palpitations, and weakness in the limbs.
3. Drinking Tea While Having a Fever
Tea contains theophylline, which has the effect of raising body temperature. For a person with a fever, drinking tea is like "adding fuel to the fire."
4. Drinking Tea During Menstruation
Drinking tea during menstruation, especially strong tea, can induce or aggravate premenstrual syndrome. Medical experts have found that compared to non-tea drinkers, those who habitually drink tea have a 2.4 times higher chance of experiencing menstrual tension, and for those who drink more than 4 cups a day, the risk increases threefold.
5. Patients with Liver Disease Should Avoid Tea
The majority of substances in tea, such as caffeine, are metabolized by the liver. If a person has liver disease, excessive tea consumption can exceed the liver's metabolic capacity and damage liver tissue.
6. Pregnant Women Should Avoid Tea, Especially Strong Tea
Tea contains a large amount of tea polyphenols, caffeine, and other substances that are unfavorable for the fetus's growth in the womb. To ensure the normal development of the fetus's intelligence and avoid excessive stimulation from caffeine, pregnant women should drink little or no tea.
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