Dutch researchers have found that drinking several cups of tea a day, can cut the risk of death from coronary heart disease by more than a third. They followed 37 500 healthy people for 13 years, and noticed that those who drank between three and six cups of tea a day, were 45% less likely to die from heart disease, than those who drank less than one cup per day. Moderate coffee consumption was also associated with a slightly reduced rate of coronary heart disease mortality.
(Tea and Coffee Consumption and Cardiovascular Morbidity and Mortality. Arteriosclerosis, Thrombosis & Vascular Biology, 14 July 2010.)