view one: tea can prevent cancer
tea contains a variety of tea. Chemical constituents have been separated and identified by more than 700 known organic and inorganic compounds, including primary metabolites, carbohydrates, fats and polyphenols of grade two metabolites, pigments, theanine, alkaloids, aromatic substances, saponins and so on. Studies have shown that tea has a preventive effect on cancer and inhibits the occurrence of esophageal tumors. No matter what kind of tea, it has different degrees of prevention against chemical carcinogenesis or transplanted tumors in animals.
opinion two: green tea has a cancer cancer and a cancer
a lot of people in daily life like to drink green tea. This is a good habit. The appropriate amount of catechins in this way is beneficial to the health of the human body. So some people take catechins only, hoping to prevent cancer. But Professor Chui in the Department of medicine, Mie University, in Japan, has proved that if the concentration of catechinic acid is 40 times that of catechinic acid in green tea, it will cause damage to DNA, and DNA damage is closely related to cell carcinogenesis.
drinking green tea can prevent cancer because it contains a polyphenol called catechin. But good things can not be eaten much, Japanese researchers found that excessive intake of catechins can cause damage to the human DNA, and then induce cancer, which is the "too much" reason. Catechinic acid has an inhibitory effect on the substances that cause arteriosclerosis. It is a "healthy driving force". There is no problem in drinking tea in daily life. However, attention should be paid to the adverse effects caused by excessive catechinic acid.
also like to drink Kung Fu tea to pay attention, kung fu tea pays attention to a "hot" word, tea water is boiling water, drink to ensure a certain temperature. But the human esophagus can only tolerate the temperature of 50 - 60 C. Hot tea is easy to burn the mucosa of the esophagus. It is drunk for a long time. The damaged mucosa has not been completely repaired and burned. This process may cause genetic mutation and cause cancer. The study found that the temperature of drinking tea could not exceed 70 degrees centigrade, and if the boiling water was poured out in 2 minutes, the risk of cancer of the esophagus would rise 5 times more than the other 4 minutes later. Some people think that drinking strong tea is harmful to health, but there is no relevant research to confirm this point. It is worth mentioning that smoking is closely related to the incidence of esophageal cancer, but studies have confirmed that drinking non hot tea can reduce the risk of esophageal cancer among smokers.