Tieguanyin contains tea polyphenols.

During the period of 1996, Fujian Institute of Traditional Chinese Medicine conducted a study on the slimming effect of drinking Tieguanyin on 102 adult simple obese men and women. Studies have shown that Tieguanyin contains a lot of tea polyphenols, which can not only improve the function of lipolytic enzyme, but also promote the metabolic activity of neutral lipase in tissues. Therefore, drinking Tieguanyin can improve the body shape of obese people, effectively reduce the subcutaneous fat and waist circumference of obese people, and thus lose weight.

People's Hospital of Quanzhou City, Fujian Province used Tieguanyin slimming tea to treat 164 obese patients, taking slimming tea 12 ~ 14g every day, 15 days as a course of treatment. After two courses of observation, the patients' blood lipid, triglyceride and cholesterol decreased obviously, and their weight also decreased, and the total effective rate reached over 70%.

Medical research shows that the crude catechin composition of Tieguanyin has strong anti-chemical activity, which can eliminate reactive oxygen molecules in cells, thus protecting human body from aging diseases. The content ratio of manganese, iron, fluorine, potassium and sodium in Anxi Tieguanyin is higher than other teas, especially the high fluorine content ranks first among all teas, which has a significant effect on preventing and treating dental caries and osteoporosis in the elderly. 1979 and 1984, there were two "Oolong Tea Fever" in Japan, and Anxi Tieguanyin was known as "Beauty Tea" and "Diet Tea".