In introducing the knowledge of various ingredients, almost all of them now have the function of preventing and treating diseases. The most common ones are lowering blood fat, blood pressure and blood sugar, and more importantly, preventing cancer. Antioxidants such as tea polyphenols in tea have bactericidal and anti-inflammatory effects, and also have the effect of preventing constipation. Moreover, animal experiments show that drinking tea can also prevent cancers such as lung cancer and respiratory tract. Fang mentioned Yunnan Pu 'er tea in his article, arguing that aflatoxin is the chief culprit of cancer. Aflatoxin is a primary carcinogen, which is produced by a series of mold metabolism. Aflatoxin B 1 is the most common polluted natural food.

Only beneficial fungi grow in Pu 'er tea, but harmful fungi don't. It seems that Pu 'er tea is particularly smart and can help people distinguish and choose good and bad fungi. However, personally, I think that the failure of the experiment is mainly because we have invested too little in tea research. Unlike coffee, the investment in research varies greatly (this is related to westerners and coffee, but from the epidemiological evidence, the relationship between drinking tea and cancer is really unclear. Unlike coffee, there is clear evidence to prove its benefits.

At the same time, I feel very puzzled. Originally, I thought everyone would agree that drinking tea is good for health, but in fact, many people still have misunderstandings about tea and believe the rumor that drinking tea causes cancer. With today's scientific civilization, food hygiene departments in various countries will prompt or prohibit drinking, just like prompting cigarettes. However, whether it is standardized in the process of processing, storage, transportation and sales is a very important link. As far as technology is concerned, knowledgeable people know that there is no problem with the technology of cooked tea. Although the history of cooked tea is only a few decades, making products is not about the age, but about the norms and compliance. I won't explain it here Interested friends can learn about the process of cooked tea by themselves.