Caffeine consumption and cardiovascular disease risk:
According to James J. E. , caffeine, through its daily consumption from a variety of sources (coffee, teas, soft drinks, chocolate and medicines), may have an impact on cardiovascular risk. This fact is related to the evidence found the scientific literature about the ability of caffeine to increase resting blood pressure (BP) in adults by about 4/2 mmHg. However, this increase in BP could be responsible for premature deaths of about 14% for coronary heart disease and 20% for stroke. (54)
Green tea and cardiovascular disease:
Consuming green tea is associated with a reduced risk of death from heart disease as well as from all-cause mortality. Researchers followed 40,530 Japanese adults up to 11 years. The results indicated that individuals who consumed the most green tea had lower death rates from cardiovascular disease (CVD) compared to subjects who consumed the least green tea (less than 1 cup/day). Women who drank ≥ 5 cups/day of green tea had a 31% lower risk of dying from CVD and a 23% lower risk of mortality from all causes than women who drank <1 cup/day. Those who drank 1 to 2 cups/day or 3 to 4 cups/day green tea had a 2% and 18% reduced risk of all cause mortality, respectively. Corresponding risk reductions in CVD were 16% and 31%. The protective effects of green tea was stronger in women than in men. In men who drank ≥ 5 cups/day green tea their all-cause mortality rate fell by 12%. Men who drank 1 to 2 cups/day or 3 to 4 cups/day green tea had a 7% and 5% reduced risk of all cause-mortality, respectively. Green tea consumption was not associated with a reduction in cancer mortality. (51)