New research published in Diabetologia (the journal of the European Association for the Study of Diabetes) shows that increasing coffee consumption by on average one and half cups per day (approx 360 ml) over a four-year period reduces the risk of type 2 diabetes by 11%. The research is led by Dr Frank Hu and Dr Shilpa Bhupathiraju, Department of Nutrition, Harvard School of Public Health, Harvard University, Boston, MA, USA, and colleagues.
Coffee and tea consumption has been associated with a lower type 2 diabetes risk but little is known about how changes in coffee and tea consumption influence subsequent type 2 diabetes risk. The authors examined the associations between 4-year changes in coffee and tea consumption and risk of type 2 diabetes in the subsequent 4 years.
The authors documented 7,269 incident type 2 diabetes cases, and found that participants who increased their coffee consumption by more than 1 cup/day (median change=1.69 cups/day) over a 4-year period had a 11% lower risk of type 2 diabetes in the subsequent 4-years compared to those who made no changes in consumption. Participants who decreased their coffee intake by 1 cup a day or more (median change=-2 cups/day) had a 17% higher risk for type 2 diabetes. Changes in tea consumption were not associated with type 2 diabetes risk.
Source: Diabetologia. “Increasing consumption of coffee associated with reduced risk of type 2 diabetes, study finds.” ScienceDaily. ScienceDaily, 24 April 2014.