Caffeine’s effects, both positive and negative, on the human body have been a point of interest for scientists. A meta-analysis from 2017 found that drinking three or four cups of coffee a day was linked to lower risk of death and heart disease development (compared to non-drinkers).
The same study found that drinking coffee was associated with a lower risk of other diseases like diabetes, dementia, some cancers, and liver disease; this prompted scientists to suggest that two to four cups a day could increase life expectancy by another two years.
Another new meta-analysis, where scientists analyzed 40 previous studies that covered almost 4 million participants and roughly 450,000 causes of death, had similar findings in the link between coffee and mortality; said link was found to be stronger in Europe and Asia than in the United States.
“As aging, obesity and lifestyle factors affect the risk of mortality, the association between coffee and mortality needs to be examined in various subpopulations by characteristics of subjects,” the study authors explain.
Story from AFP.
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