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Scientists wake up to coffee’s benefits

BMJ 2017; 359 doi: https://doi.org/10.1136/bmj.j5381 (Published 22 November 2017) Cite this as: BMJ 2017;359:j5381
  1. Anne Gulland
  1. London

Drinking three to four cups of coffee a day is associated with health benefits across a range of diseases and conditions. A review published in The BMJ this week identified 201 meta-analyses of observational research and 17 meta-analyses of interventional research and found that coffee consumption was more often associated with benefit than harm over various health outcomes.1

The researchers found that drinking three cups of coffee a day was associated with the greatest benefit in terms of cardiovascular disease, coronary heart disease, and stroke, when compared with not drinking coffee. Consumption at this level was associated with a 19% lower risk of mortality from cardiovascular disease (relative risk 0.81, 95% confidence interval 0.72 to 0.90), a 16% lower risk of mortality from coronary heart disease (relative risk 0.84, 0.71 to 0.99), and a 30% lower risk of stroke mortality (0.70, 0.80 to 0.90). Increasing consumption to more than three cups a day was …

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