Coffee consumption and type 2 diabetes – Part 2Print this page 31 May 2013
This is the second of three blog posts on the topic of coffee consumption and type 2 diabetes, concentrating on the impact coffee consumption has on type 2 diabetes. Coffee and Health also houses current scientific information on a wide range of other coffee-related topics.
Regular coffee consumption linked to a lower risk of type 2 diabetes
Studies have found a statistically significant negative association for coffee and type 2 diabetes in different populations. In addition, a higher level of coffee consumption has been linked to a low incidence of diabetes. Taken together, these are strong indicators of a true association between the consumption of coffee and a lower incidence of type 2 diabetes.
A 2002 Dutch cohort study of 17,111 adults and 306 new cases of type 2 diabetes, showed a statistically significant negative association between coffee consumption and the risk of developing type 2 diabetes. This finding was also seen in a 2009 review covering 457,922 individuals and 21,897 newly diagnosed cases of type 2 diabetes from eight different countries.
More recently, eight more epidemiological studies have been published. All eight have confirmed the inverse association between coffee consumption and risk of type 2 diabetes.
Two further review papers, both published in 2012, add to the existing body of evidence suggesting that habitual coffee consumption is associated with a lower risk of type 2 diabetes.
The findings therefore show that:
- Every additional cup of coffee per day is associated with a 5-10% lower risk of developing type 2 diabetes
- Drinking 3-4 cups of coffee per day is associated with an approximate 25% lower risk of developing type 2 diabetes compared to consuming none or less than 2 cups per day
Decaffeinated coffee and tea also linked to lower risk of type 2 diabetes
As with caffeinated coffee, the majority of published studies which have evaluated the relationship between decaffeinated coffee or tea drinking and risk of type 2 diabetes have reported similar negative associations.
Presentations from experts present at the World Congress on Prevention of Diabetes and Its Complications (WCPD) can also be viewed here.
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