The antioxidants polyphenols, which offer protection from a number of chronic diseases, are what give most teas their health advantages. However, only black tea has a specific class of polyphenols known as theaflavins. In black tea theaflavins, which make up 3% to 6% of the polyphenols, are produced during oxidation. Black tea delivers some of the same advantages as other forms of tea but also has some special benefits because of this. Drinking black tea promotes heart health, reduces the risk of stroke, decreases the risk of some cancers, lowers blood sugar level and many more