The Power of Green Tea

Thursday, Feb 01, 2018

Latest: Summary of findings from a Japanese study that investigated green tea’s preventive effect on disabling diseases such as stroke and cognitive impairment.

Reference:

Tomata Y, Kakizaki M, Nakaya N, Tsuboya T, Sone T, Kuriyama S, Hozawa A, TsujiI. Green tea consumption and the risk of incident functional disability in elderly Japanese: the Ohsaki Cohort 2006 Study. Am J Clin Nutr. 2012 Mar;95(3):732-9. Epub 2012 Jan 25. Link to PubMed

  • Background:
    Green tea's preventive effect on disabling diseases such as stroke and cognitive impairment has been studied extensively.
     
  • Method:
    A recent study investigated the association between green tea consumption and incident functional disability in 13,988 Japanese individuals aged ≥ 65 years.
    • Functional disability referred to problems with daily chores and activities caused such as bathing or dressing.
       
  • Key findings:
    Compared to those who drank < 1 cup a day (the volume of a typical cup of green tea is ~100 ml):
    • Subjects who drank 1-2 cups of green tea per day had a hazard ratio of 0.90 (i.e. a 10% decreased risk of developing a functional disability).
    • Subjects who drank 3-4 cups of green tea per day had a hazard ratio of 0.75 (i.e. a 25% decreased risk of developing a functional disability).
    • Subjects who drank ≥ 5 cups of green tea per day had a hazard ration of 0.67 (i.e. a 33% decreased risk of developing a functional disability).
       
  • Conclusion:
    Green tea consumption is significantly associated with a lower risk of incident functional disability.

 

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