Tea, derived from the leaves of Camellia sinensis, has been consumed for nearly 5000 years and is now the most widely consumed beverage globally. Scientific research has shown that tea polyphenols, particularly epigallocatechin-3-gallate (EGCG) in green tea and theaflavin-3,3'-digallate in black tea, have significant health benefits, including anti-cancer and cardiovascular protective effects. Tea polyphenols inhibit tumorigenesis in various animal models and have been shown to reduce the risk of chronic diseases such as cancer and cardiovascular disease. EGCG is the most effective anti-cancer compound in tea, with strong antioxidant properties that protect against oxidative damage. Tea consumption is associated with reduced cancer risk, particularly for lung, colon, liver, and prostate cancers, and has been linked to lower risks of cardiovascular disease, diabetes, and obesity. Green tea also shows protective effects against skin, lung, liver, and pancreatic cancers. EGCG has been shown to inhibit tumor growth, induce apoptosis, and reduce inflammation. Tea consumption is associated with improved arterial compliance, reduced blood pressure, and enhanced metabolic functions. Green tea may also help in weight management by increasing energy expenditure and fat oxidation. Overall, tea polyphenols, especially EGCG, have demonstrated significant health benefits, including cancer prevention, cardiovascular protection, and metabolic regulation.Tea, derived from the leaves of Camellia sinensis, has been consumed for nearly 5000 years and is now the most widely consumed beverage globally. Scientific research has shown that tea polyphenols, particularly epigallocatechin-3-gallate (EGCG) in green tea and theaflavin-3,3'-digallate in black tea, have significant health benefits, including anti-cancer and cardiovascular protective effects. Tea polyphenols inhibit tumorigenesis in various animal models and have been shown to reduce the risk of chronic diseases such as cancer and cardiovascular disease. EGCG is the most effective anti-cancer compound in tea, with strong antioxidant properties that protect against oxidative damage. Tea consumption is associated with reduced cancer risk, particularly for lung, colon, liver, and prostate cancers, and has been linked to lower risks of cardiovascular disease, diabetes, and obesity. Green tea also shows protective effects against skin, lung, liver, and pancreatic cancers. EGCG has been shown to inhibit tumor growth, induce apoptosis, and reduce inflammation. Tea consumption is associated with improved arterial compliance, reduced blood pressure, and enhanced metabolic functions. Green tea may also help in weight management by increasing energy expenditure and fat oxidation. Overall, tea polyphenols, especially EGCG, have demonstrated significant health benefits, including cancer prevention, cardiovascular protection, and metabolic regulation.