New research indicates a few cups of green tea per day may help protect against heart disease. According to researchers, green tea helped study participants' arteries to relax, thus improving blood flow. They also stated that these effects occurred quickly, within 30 minutes. Other studies evaluating green teas health benefits have also found green tea to be beneficial in fighting cancer, lowering blood pressure and even aiding in weight loss.
Source: European Journal of Cardiovascular Prevention & Rehabilitation. 15(3):300-305, J