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  • The scientific evidence indicates that moderate coffee consumption is statistically significantly associated with a reduced risk of developing type 2 diabetes. This has potentially important implications in light of the already high and increasing prevalence of this disease.
  • The association is well-documented in several different populations and shows a consistent dose response, i.e. lower risk at higher consumption levels. Every additional cup of coffee up to 6-8 cups per day (regular or decaffeinated) is associated with a 5-10% lower risk of developing type 2 diabetes.
  • The statistically significant association, in combination with the consistent dose response relationship, are a strong indication for a true association between moderate coffee consumption and the lower incidence of type 2 diabetes.
  • Still lacking is a plausible mechanism to explain this association. Current findings are still controversial, although recent observations of beneficial effects of coffee consumption on some markers of subclinical inflammation are promising.

The content in this Topic Overview was last edited in March 2011. Papers in the Latest Research section and further resources are added regularly.

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