Types of tea and its different health functions

All kinds of tea, including green tea, white tea and chrysanthemum tea, are rich in flavonoids and other healthy compounds The Oriental tea drinking habit has a history of thousands of years Its health promoting and happiness promoting functions have also attracted the attention of Westerners Later, they found that different teas also have their own unique health care effects It is found that some teas have the functions of anti-cancer, preventing heart disease and diabetes; some teas have obvious effects in promoting weight loss and lowering cholesterol; and the refreshing effect of tea is particularly good In addition, tea also has antibacterial properties Because it is difficult to find the disadvantages of tea, it is also regarded as one of the best substitutes for coffee drinks One of the benefits of tea is the low caffeine content, but the high flavonoid content, which is not only good for heart health, but also has a good anti-cancer effect Although there are controversies about how long tea is best soaked and how much it should be drunk, nutritionists believe that drinking tea is good However, they generally believe that home brewed tea is a healthier choice than bottled tea, because there are fewer calories and sweeteners Although there are many tea products, only green tea, black tea, white tea, Pu'er tea and Wulong tea are regarded as pure tea They all come from tea plants - native shrubs in China and India - and contain unique antioxidants called flavonoids This flavonoid, called epicatechin (EGCG), can resist free radical damage, so it can fight cancer, prevent heart disease and arterial thrombosis These teas contain caffeine and theanine, which can affect the brain and have a refreshing effect Tea processed more often contains fewer polyphenols Polyphenols include flavonoids Oolong tea and black tea are oxidized or fermented, so the concentration of polyphenols is lower than green tea, but their antioxidant capacity is still very high Here are some research results related to the health function of tea: herbal tea is made by soaking herbs, fruits, plant seeds or roots in hot water The antioxidant content of this kind of tea is lower than that of green tea, white tea, black tea and oolong tea The composition of the compounds they contain depends on the plant material chosen Common herbal tea varieties include ginger, ginseng, gingko, hibiscus, jasmine, rose, mint, chamomile and Echinacea There are few studies on the health care effects of these herbal teas, which are said to have the advantages of reducing weight, preventing colds, calming nerves and promoting sleep The following are the findings related to these herbal teas: instant tea contains less real tea, but more sugar or artificial sweeteners To ensure health, check the list of ingredients on the label Most teas are mild, but experts caution against using diet teas that contain senna, aloe, sea buckthorn, and other plant-based laxatives In addition, the health agency also draws attention to herbal teas that claim to have analgesic and anticancer effects They not only have no scientific basis, but also lead to gastrointestinal problems, liver and kidney damage, and even death In addition, the U.S Food and drug administration has warned consumers to take care of health care products containing lavender, ephedra, willow bark, silkworms and Lobelia.