What is the efficacy and scientific principle of black tea?

China has a history of "treating diseases with tea" since ancient times. There are many records of ancient folk using old tea to treat diabetes, dysentery and cold. Modern medicine believes that polyphenols, tea polysaccharides, tea saponins, amino acids, alkaloids and inorganic elements in tea have health care functions for human body. Tea is a special beverage that can enhance human immunity, resist oxidation and aging, resist cancer, reduce blood fat and regulate metabolism. It is recognized by the world tea and medical circles as a healthy beverage in the 265,438+0 century, ranking first among the six healthy beverages in the world. Black tea belongs to post-fermented tea, and its unique processing technology, especially the participation of microorganisms, makes it have special Chinese medicine effects. Rich in tea polysaccharide compounds, it is considered by the medical community to have the functions of regulating sugar metabolism (preventing diabetes), lowering blood lipid, lowering blood pressure, preventing coagulation and thrombosis, and improving immunity. Clinical trials have proved that black tea has remarkable special effects and is irreplaceable by other teas. Using Qualcomm screening technology, we selected 10 modern disease models to study the effects of black tea on human health, including models of lowering blood pressure, blood lipid and blood sugar, models of inhibiting the spread of cancer cells and models of improving human immunity. Through model evaluation, it is found that Liangqian tea and Fuzhuan tea have obvious effects of lowering blood pressure, blood lipid and blood sugar, which are very helpful for human fat metabolism and weight control.