Green tea health benefits Green tea is becoming increasingly popular in the U.S. Listed below are the possible health benefits associated with green tea. Green tea was used in traditional Chinese and Indian medicine to control bleeding and heal wounds, aid digestion, improve heart and mental health , and regulate body temperature. Recent studies have shown green tea can potentially have positive effects on everything from weight loss to liver disorders, type 2 diabetes , and Alzheimer's disease . It is important to note that more evidence is required before these possible health benefit links are proved definitive: