1. Should not drink strong tea
Tea is generally retained in the human body for about 3 hours, while the concentration of concentrated tea is longer, so that theophylline accumulates too much in the human body, resulting in neurological dysfunction. Due to the action of the tannic acid in the tea, the secretion of mucus in the intestinal mucosa is reduced, and constipation occurs. The amount of tea is generally 5 to 10 grams per day, which can be divided into two drinks.
2. Should not drink tea on an empty stomach
In the morning, it is not recommended to drink tea on an empty stomach, because drinking tea on an empty stomach dilutes the gastric juice, reduces the function of stomach acid, hinders digestion, and affects the absorption of protein, which may cause inflammation of the gastric mucosa.
It is not advisable to take medicine with tea: tea contains a lot of tannic acids. If you take the medicine with tea, the acidity of the tannic acid and the alkaloids, proteins and metal salts in the drug will cause precipitation, which will inevitably affect the efficacy and even failure of the drug. Tea is a function of an exciting central nervous system. When taking medicines such as soothe the nerves, sedation, hypnosis, and taking iron-containing blood medicine, enzyme preparation medicine, and egg-containing self-medication drugs, it is not suitable to use tea.
3. Should not drink tea before going to bed
Two hours before going to bed, it is best not to drink tea. Otherwise, it may affect sleep and even cause insomnia. If older people drink tea before going to bed, they are easily flustered with more urine, and will affect sleep. If you suffer from insomnia caused by drinking tea, even taking sleeping pills will not help.
4. Should not drink too much tea
Because there is caffeine in the tea, excessive tea consumption can cause irritability, anxiety, palpitations, restlessness, etc., resulting in insomnia; it also inhibits the stomach and intestines, hinders digestion, and reduces appetite. So pay attention to the right amount of tea.
5. Should not drink brewing for a long time the tea
Drinking tea should be soaked in a drink, so the effect is good. If it brews too long, it will lose the tea fragrance and cause the damage of vitamin C and vitamin B in the tea. In addition, brewing a long time the tea leaves, caffeine will accumulate too much, citrate greatly increased, will produce stimulating effects, especially those suffering from gout, cardiovascular and nervous system diseases, should avoid drinking brewing long time the tea.
6. Should not drink overnight tea
After brewing a long time of tea, not only will vitamins and other nutrients be lost, but it is also prone to deterioration and even mildew. The tannic acid in tea can also become a very irritating oxide, which is easy to cause inflammation of the spleen and stomach.
7. Should not drink first brewed tea
It is because on the one hand, for the sake of color, in order to take the essence, on the other hand, to drink less mold. Because tea is in the process of production, packaging, transportation, and storage. It is extremely susceptible to mold contamination, especially when it is not recommended to use boiling water to save vitamin C and other nutrients as much as possible. Therefore, try not to drink first brewed tea, and dump the tea floating on the tea surface, which is safer.
8. Should not drink tea when a fever
Some patients with the fever still drink tea or even strong tea as usual, which not only does not lower the body temperature but also causes the body temperature to increase. Because the theophylline in the tea will increase the body temperature, the effect of the cooling drug will disappear or be greatly reduced.