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Green Tea


Coffee, green tea, black tea, oolong tea consumption and cardiovascular disease risk (46):

  • Compared with non-tea drinkers, women consuming green tea at 1-6 cups/week, 1-2 cups/day, 3-5 cups/day and ≥ 6 cups/day had a 66%, 72%, 61%, and 58% reduced risk of coronary heart disease compared to non-tea drinkers.
  • Men drinking ≥ 1 cups/day of oolong tea benefited from a 61% reduced risk of CVD.
  • Individuals in the second highest quintile of total caffeine intake had a total CVD risk reduction of 38% in men and 22% in women.

 

Green tea and cardiovascular disease:

  • 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. By typically increasing resting blood pressure (BP) in adults by about 4/2 mmHg which according to the author, could be responsible for premature deaths of about 14% for coronary heart disease and 20% for stroke. (54)

 

  • Green tea and cardiovascular disease (CVD) population study according to Kuriyama, S et al of “the Ohsaki Study” (51):
    • Researchers followed 40,530 Japanese adults up to 11 years.
    • 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.
    • Women who drank 1 to 2 cups/day or 3 to 4 cups/day green tea had a 16% and 31% reduced risk of CVD, respectively.
    • 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.
    • The protective effect of green tea was stronger in women than in men.
    • In men who drank ≥ 5 cups/day green tea their all-cause mortality risk 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.

 

  • Coffee, green tea, black tea, oolong tea consumption and cardiovascular disease risk (53):
    • Compared with non-tea drinkers, women consuming green tea at 1-6 cups/week, 1-2 cups/day, 3-5 cups/day and ≥ 6 cups/day had a 66%, 72%, 61%, and 58% reduced risk of coronary heart disease compared to non-tea drinkers.
    • Men drinking ≥ 1 cups/day of oolong tea benefited from a 61% reduced risk of CVD.
    • Individuals in the second highest quintile of total caffeine intake had a total CVD risk reduction of 38% in men and 22% in women.

 

  • Green tea and Dementia: The Ohsaki Cohort Study (54) evaluated a population of over 13,000 Chinese adults. The risk of dementia was found to be 24% lower for those that consumed 5 cups of green tea or more compared to those who drank less than 1 cup.

 

  • Green Tea and Oral Health:
    • Sarin, S. et al found that 2% green tea mouthwash rinsed for 1 minute twice daily was statistically significant in the reduction of both plaque and gingivitis after 28 days compared to placebo (52).
    • A population study by Kushiyama M. et al used a questionaire to evaluate green tea consumption of 940 Japanese men 49 to 59 years old. Researchers found that a lower degree of periodontal disease was associated with an increasing number of cups of green tea consumption (53).

 

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