Does coffee consumption reduce the risk of type 2 diabetes?

From: International Journal of Obesity

Journal rating:
rating: 95%
Study Quality:
rating: 25%

Overall Reliability

Article Quality:
rating: 40%
rating: 75%


  • 10,188 Finnish men and 11,197 women aged 35–74 years


  • A self-administered questionnaire data on coffee, tea, alcohol and other food consumption, physical activity, smoking, socio-economic factors and medical history, together with measured height, weight and blood pressure using standardized protocol.
  • Participants were followed-up after after an average of 13.4 years.


  • At follow-up, there were 964 cases of type 2 diabetes.
  • The risk of type 2 diabetes in participants who drank 0–2, 3–6 and more than 7 cups of coffee were reduced by 0%, 23% and 34% in men, and 0%, 29% and 48% in women, and 0%, 25% and 39% in men and women combined, respectively.
  • Among obese and inactive people, coffee drinking of seven cups or more daily reduced the risk of type 2 diabetes to half. This association was observed regardless of the levels of physical activity, BMI and alcohol consumption.


  • Yes (with confidence)