It is well known that drinking Tea has many benefits for the human body. Tea can invigorate, relieve fatigue, aid digestion, quench thirst, and promote diuresis and de-swelling. In particular, green tea, Oolong tea are better than Black Tea, and they have anti-cancer properties. Tea can help regulate the body's acid-base balance and contains abundant Vitamin C, Vitamin E, carotene, niacin, potassium, calcium, selenium, fluoride, and other nutrients, all of which are beneficial to the human body, including the kidneys.
However, some people point out that tea contains caffeine. A cup of tea generally has 30% to 50% of the caffeine found in a cup of coffee. Strong teas contain even more caffeine. It has been shown that caffeine can cause normal cells to become abnormal, potentially leading to cancer. Excessive consumption of strong tea can overexcite the nervous system, increase the burden on the heart and kidneys, stimulate the secretion of gastrin, potentially causing peptic ulcers, and tannic acid can easily bind with iron, reducing the absorption of iron, an essential component for hematopoiesis (blood formation).
The timing of Tea drinking is also important. One should not drink tea immediately after a meal; it is best to wait half an hour to an hour after eating. The amount of tea consumed should not be excessive; 300 to 400 milliliters at a time is usually sufficient. Distilled water is the best choice for brewing tea. Boil the water and then heat it for another 2 to 3 minutes before cooling it down. Using cooled boiled water to brew tea is ideal, as it reduces the destruction of Vitamin C in the tea leaves and preserves their unique green color and aroma. It is best to drink tea freshly brewed.
Tea can be divided into cool and warm varieties based on its processing method. People with a hot and dry constitution should drink cool teas, while those with a cold and weak constitution should drink warm teas. In the evening, it is best to drink dark tea or black tea. Green tea is unfermented and has a higher content of polyphenols, making it more stimulating. Black tea is fully fermented and less stimulating. For individuals with weak spleen and stomach, adding milk to black tea can have a warming effect. Individuals who are easily agitated, sensitive, have poor sleep quality, or are physically weak should avoid or limit their tea intake in the evening. When Drinking Tea in the evening, use less tea and do not brew it too strongly. It is best to drink tea after dinner, as drinking tea on an empty stomach can inhibit gastric juice secretion and impair digestion, possibly leading to symptoms such as palpitations, headache, and other signs of “tea drunkenness.”