Drinking tea can prevent cancer
Tea contains a variety of chemical composition, the separate identification of known up to 700 kinds of organic and inorganic compounds including primary metabolites protein, carbohydrate, fat, and the secondary metabolites of polyphenols, pigments, theanine, alkaloids, aromatic substances, saponins, etc. Studies have shown that tea in cancer prevention. Green tea, black tea, tieguanyin tea, scented tea, and a big leaf green tea can be by blocking dimethyl benzyl carcinogens nitrosamines precursor in the synthesis of rats, inhibit the occurrence of cancer of the esophagus. No matter what kind of tea, chemical carcinogenic or portability tumors in animals, there are different levels of protection.
Drink green tea anti-cancer actually cause cancer
Many people like to drink green tea in everyday life, this is a good habit, in this way intake moderate catechin is beneficial to human body health. So some people will only take catechin, hope to prevent cancer. But Japan's triple medicine at the university of western sichuan is estimated by professor experiments have proved that if people get catechin concentrations is 40 times of catechin in green tea that will deal damage to DNA, and DNA damage is closely related to the cancer cells.
Drink green tea can prevent cancer, because it is rich in a called catechin polyphenols. But good things cannot eat more, Japanese researchers have found that excessive intake of catechin can damage the DNA of human body, thus induce cancer, this is the word of "too much of a good thing". Catechin material has inhibitory effect, as to the cause of atherosclerosis is "healthy", tea is no problem in daily life, but should have adverse effects on the excessive catechin attract attention.
Also like drinking kombucha tea also should pay attention to, from the attention to a "hot" word, make tea in the water is boiling water, drink when you need to ensure a high temperature. But the esophageal mucosal tolerance only 50 ℃ ~ 60 ℃, the temperature of hot tea is easy to burn the esophageal mucosa, long-term drinking, the mucous membrane injury hasn't completely repair was scalded, this process may be genetic mutations that lead to cancer. The study found that drinking tea temperature should not exceed 70 ℃, if the hot water poured out after 2 minutes after drinking, the risk of esophageal cancer than 4 minutes and then drink up 5 times. Some people think that drink strong tea health, but at present there is no relevant studies confirm this. It is worth mentioning that smoking and closely related to the onset of esophageal squamous cell carcinomas, but studies have confirmed that don't drink hot kunfu tea can reduce the risk of esophageal cancer of smokers.