Green tea is derived from the dried leaves of Camellia sinensis , an evergreen shrub. It has a very long history of use dating back to China approximately 5,000 years ago.
Several reports have been made in recent years claiming a variety of health benefits from drinking green tea, such as preventing heart disease, cancer, and diabetes, and as a weight maintenance aid. We decided to take a look at the evidence for reducing risk factors for heart disease and cancer.