Drinking tea for health preservation has been a tradition of China people for thousands of years. Compared with all kinds of drinks, drinking tea can not only help people replenish water, but also contain such beneficial ingredients as tea polyphenols, tea polysaccharides, catechins, zinc, selenium, copper, manganese and chromium. Many studies have proved that drinking tea has certain lipid-lowering and weight-losing effects. Besides, drinking tea also has health benefits such as anti-radiation, regulating blood lipid, strengthening bones and anti-oxidation. However, whether it is a lover who is addicted to tea fragrance or a health expert who is eager to use tea to achieve health care purposes, drinking tea should pay attention to methods. Only by drinking the right tea can we play a real role in health preservation. Next, let’s talk about two or three things about drinking tea.
Water temperature and quantity of drinking teaHave certain standards.
The temperature of drinking tea is very important. The temperature of tea is between 56℃ and 60℃, which is beneficial to health. Because esophageal mucosa is vulnerable to chronic thermal injury, the risk of cancer will increase after injury. Especially those who like smoking and drinking, if they drink hot tea (above 65℃), it will damage the ability of esophagus to resist alcohol and nicotine toxins, and the risk of cancer is higher.
In addition to the water temperature, the amount of tea is also worthy of attention.
Generally speaking, for healthy people who have the habit of drinking tea, the daily consumption of tea can be about 12 grams, and it is more appropriate to brew it in 3-4 times. The number of people who love tea or eat greasy food can be increased appropriately. Pregnant women, children and people with neurasthenia and tachycardia should drink less tea or not.
Drinking tea varies from person to person and from time to time.
People with different constitutions drink different kinds of tea. Unfermented tea (green tea, such as Longjing tea, Biluochun tea, Maojian tea, etc.) has the functions of clearing away heat, diuresis and promoting fluid production, but it is not suitable for people with cold stomach or chronic stomach diseases because it is cold. Semi-fermented tea (that is, green tea, such as Tieguanyin and Oolong tea), fully fermented tea (black tea, etc.) and post-fermented aged tea (that is, black tea, such as Pu ‘er tea) have the functions of promoting digestion, helping digestion and refreshing. These teas are mild in nature and taste, and are more suitable for most people.
Of course, what kind of tea to drink depends not only on physical fitness, but also on habits. Even if the constitution is not suitable, if you like to drink some kind of tea, you can drink some in small quantities and properly.
Drinking tea should match the season. In spring and summer, you can drink green tea and oolong tea, which can clear away heat and relieve summer heat. Autumn and winter are suitable for drinking black tea or Pu ‘er tea, which are warm and can play a role in driving away cold.
Drinking tea is not suitable for four reasons
People who are weak should not drink tea (especially green tea). For patients with gastric ulcer, theophylline in tea will affect the secretion of gastric acid and the healing of ulcer, thus aggravating the condition.
People with constipation should not drink tea, because tannic acid and caffeine in tea can reduce the secretion of digestive juice in gastrointestinal tract, and at the same time have a astringent effect, slow down intestinal peristalsis and induce constipation. People with long-term constipation should pay attention to drinking tea.
Children and pregnant women are not suitable for drinking tea. Because tea contains a lot of tannic acid, it may affect the body’s absorption of calcium, iron and other nutrients. May affect health and children’s growth and development.
People who are taking medicine should not drink tea. Tannic acid in tea will combine with drugs containing a variety of metal ions or drugs containing alkaloids in the stomach to form insoluble compounds. If you drink too much tea after taking the medicine, it will affect the drug absorption.
Although milk tea is good, don’t be greedy.
Authentic milk tea is both refreshing and mellow. There are many kinds of milk tea, most of which are based on black tea, made with a little milk and sugar, and some also add coffee. However, many milk teas on the market now use creamer instead of milk because of the cost, which increases the intake of trans-unsaturated fatty acids and increases the risk of coronary heart disease. It will also increase the viscosity of human blood and easily lead to thrombosis. It also has adverse effects on infants and young people during their growth and development. From the analysis of nutritional components, this kind of milk tea drink not only lacks nutrients in milk and tea, but also contains a lot of "bad molecules" such as sugar, saturated fat and trans fatty acids, which will be harmful to health if it is drunk for a long time. Therefore, when drinking milk tea, everyone should choose a reliable tea shop and drink genuine milk tea.
In addition, caffeine is also a high content component in milk tea. Caffeine exists in a range of foods and beverages, including cola and other carbonated drinks, energy drinks, chocolate, tea and coffee. It can not only exist naturally, but also be artificially added during production and processing. For most people, it is no problem to consume a small amount of caffeine. However, long-term intake of more than 600mg of caffeine per day can produce symptoms of caffeine poisoning, which are characterized by anxiety, nervousness and sleep disorders. Some people who are allergic to caffeine will have these symptoms even if they consume a small amount of caffeine. For pregnant or pregnant women, a large amount of caffeine intake will also increase the incidence of fetal abortion and low birth weight babies, and caffeine will also have an impact on the health of children and adolescents. For this reason, the safe intake of caffeine issued by the Ministry of Health of Canada is 400mg per day for healthy adults, 300mg per day for pregnant women, lactating women or women planning to become pregnant, 45mg per day for children aged 4 to 6, 62.5mg per day for children aged 7 to 9 and 82 mg per day for children aged 10 to 12. Spot checks show that the average caffeine content in each liter of milk tea is 270mg, so everyone should control the consumption of milk tea according to their own situation. Text/Bi Yanxia (Beijing Friendship Hospital)