Nowadays, tea is circulating all over the world. Is drinking tea "for health"? Or "raise cancer"? Tea culture has a long history in China. According to Shennong's Classic of Food, "Tea is powerful and pleasing to the eye after a long time." That is to say, people drank tea from Shennong in ancient times, and it was not until the Jin Dynasty and the Northern Dynasties that drinking tea gradually became a culture. After Kaiyuan in the Tang Dynasty, the "tea ceremony" in China became popular, and the wind of drinking tea permeated the ruling and opposition parties, and the wind of drinking tea in the Song Dynasty became more and more fierce. Since then, people have been drinking tea, talking about business, singing poems or drinking tea in their spare time. In a word, tea culture has been deeply imprinted in people's hearts.

Nowadays, drinking tea is even more popular. Tea is circulated all over the world and has become an organic green drink recognized all over the world. Even the saying that tea can cure diseases is regarded as a treasure by some health lovers. They know that tea can lower blood pressure, prevent cancer and even cure all kinds of poisons. Make tea if you disagree!

In fact, is tea really that magical? A research paper published in the authoritative American journal Am J Clin Nutr shows that tea does have the function of conditioning and preventing some diseases. This study was not led by foreigners, but the result of the analysis of data samples of more than 500,000 adults by Professor Li Liming of Peking University College of Public Health and other teams in the prospective study of chronic diseases in China.

Research data show that people who drink green tea for a long time are significantly less likely to suffer from cardiovascular and cerebrovascular diseases and diabetes. Especially for diabetic patients, compared with people who don't drink green tea often, the incidence of complications and mortality of drinking green tea decreased by 10%, and the risk of microvascular complications decreased by 12%.

The research in this field is not limited to experts from Peking University. From June 5438 to June 2020 10, Gu Dongfeng, an academician of China Academy of Sciences and vice president of Fuwai Hospital of China Academy of Medical Sciences, also published related research in the European Journal of Preventive Cardiology. Studies have shown that drinking green tea regularly can reduce the risk of cardiovascular and cerebrovascular events and death from various causes, especially for people who insist on tea drinking habits for a long time, men and green tea drinkers, and the health benefits are more significant.

There is also a study in the journal Nutrition Progress, which shows that drinking tea can prevent some cancers, especially oral cancer, to some extent.

To sum up, various authoritative academic studies show that drinking tea does have certain benefits to the human body.

However, there are also voices of opposition in the scientific community. Many scholars believe that drinking tea is also the root cause of some cancers.

The reason is that people like to drink hot tea, which is the first leading cause of cancer. Tea drinking rose in China, and the prevalence of tea culture also originated in China. In China, especially in southern Zhejiang, residents prefer to drink hot tea. This area is also a high incidence area of esophageal cancer. People who like to drink hot tea often pursue the entrance of hot tea and savor it carefully. Most of their teas are above 60 degrees Celsius.

The first major cause of esophageal cancer is high temperature scalding the esophagus, which is easy to cause necrosis of esophageal cells and tissues. The World Health Organization has published a class of carcinogens, including any hot drink and tea that exceeds 65 degrees Celsius.

Also, it is not recommended to drink strong tea for a long time, because tea contains a certain amount of caffeine, which will have an impact on the brain nerves and will lead to a decline in sleep quality. Moreover, caffeine also stimulates gastric mucosa, and drinking strong tea for a long time affects gastric acid secretion, which is easy to cause stomach problems.

In a word, drinking tea is good for all aspects of the body, especially green tea. However, we should also pay attention to the temperature and concentration when drinking tea, and also pay attention to developing the good habit of health check-up.