A meta-analysis published in the Archives of Internal Medicine demonstrates that coffee consumption may be associated with a reduction in the risk of type 2 diabetes.
Analysis of data from a cohort of 457,992 showed an inverse relationship between coffee consumption and subsequent risk of diabetes, such that every additional cup of coffee consumed in a day was associated with a 7% reduction in the excess risk of diabetes relative risk, after adjustment for potential confounders.
These new findings are particularly important as type 2 diabetes is the most common of the two main types of diabetes and accounts for between 85 and 95% of all people with diabetes. There are currently over 2.5 million people with diabetes in the UK.
Dr Euan Paul, Executive Director of the British Coffee Association, commented, "This large scientific evaluation adds to the overwhelming weight of evidence which demonstrates that moderate coffee consumption of four to five cups per day is safe and may even confer certain health benefits.
"This evaluation builds on sound research in this area which has demonstrated that coffee drinking may protect against the onset of type 2 diabetes. At this stage these results do need to be supported by further research to determine the mechanism of action before any possible implications for public health and clinical practice can be considered, however the results are very encouraging."
This meta-analysis builds on important research from Van Dieren et al, a prospective cohort study recently published in Diabetologia, which demonstrated that consumption of at least three cups of coffee or tea (regardless of the levels of caffeine content) per day reduced the risk of type 2 diabetes by approximately 42%.