Helps to delay aging: Tea polyphenols in green tea have strong antioxidant and physiological activity, and are the scavengers of human free radicals.
Helps to inhibit cardiovascular diseases: there is a kind of tea polyphenols in green tea that plays an important role in human metabolism.
Helps to prevent cancer: Tea polyphenols in green tea can block the synthesis of various carcinogens such as ammonium nitrite in the body, which has the function of directly killing cancer cells and improving the immunity of the body.
It is helpful to prevent and treat radiation injury.
Helps to inhibit and resist viruses and bacteria: tea polyphenols in green tea have a strong astringent effect, have obvious inhibitory and killing effects on pathogenic bacteria and viruses, and have obvious anti-inflammatory and antidiarrheal effects.
Conducive to beauty and skin care: tea polyphenols in green tea are water-soluble substances. Washing your face with it can remove greasy face, astringe pores, disinfect, sterilize and delay skin aging, and reduce the damage of ultraviolet rays in the sun to the skin.
Helps refresh: Caffeine in green tea can stimulate the central nervous system of human body, enhance the excitement process of cerebral cortex, and has the functions of refreshing and clearing heart.
Helps diuresis and relieve fatigue: Caffeine in green tea can stimulate the kidney, promote the rapid excretion of urine, improve the filtration rate of the kidney, and reduce the retention time of harmful substances in the kidney. Caffeine can also eliminate excessive lactic acid in urine, which helps to eliminate fatigue as soon as possible.
Second, the disadvantages of drinking green tea, as well as matters needing attention, mainly include:
Not suitable for fever, renal insufficiency, cardiovascular diseases, habitual constipation, digestive tract ulcer, neurasthenia, insomnia, pregnant women, lactating women and children.
People with a bad stomach should not drink green tea. Green tea is cold, and people with a bad stomach can easily cause flatulence and other symptoms.
Insomnia and dreaminess, the elderly and pregnant women can't drink green tea, because caffeine contained in green tea affects sleep.
Old people and pregnant women can't drink green tea.
Children should not drink green tea, because tannic acid in green tea will hinder the absorption of nutrients such as protein and fat, which will further lead to the fragility of bones and teeth and even cause children's allergies.
Not suitable for people with fever, renal insufficiency, cardiovascular diseases, habitual constipation, digestive tract ulcer, neurasthenia, insomnia and other symptoms.
Patients with hypoglycemia should use it with caution, because green tea can quickly lower blood sugar in a short time.
Patients with liver disease should avoid drinking green tea: most substances such as caffeine in green tea are metabolized by the liver. If the liver is ill, drinking too much tea will damage the liver tissue.
Anemia patients should not drink green tea. Tannic acid in green tea can combine with iron to form insoluble final compound, which makes the body unable to get enough iron source.
Women should not drink green tea during menstruation: menstrual blood will consume iron in the body, and tannin in tea will hinder the absorption of iron in food.