Recently, many studies have been done to try and evaluate the various health benefits that proponents of green tea consumption have claimed.
Green tea contains many volatile oils, vitamins, and minerals, as well as caffeine.
The part responsible for its medicinal value, however, is polyphenols, including catechins. Evidence is increasing that consumption of green tea may have beneficial effects on prevention of several cancers, including colon, pancreatic and stomach. 4 Green tea may stimulate the immune system to help defend the body against bacterial infections, including dental plaque. 5 Green tea has antibacterial properties and stimulates the production of immune cells . However, since such high levels of caffeine can cause other complications, this therapy should not be undertaken without a health provider's consultation.