According to a systematic review and meta-analysis of 18 studies on coffee and tea consumption (decaffeinated included) an inverse association between the consumption of coffee and tea and the risk of type 2 diabetes mellitus has been found. Each additional cup lowered the incidence of diabetes with an additional 7%. These results included decaffeinated coffee as well, removing the possibility that the caffeine might contribute to the positive effect. While the researchers are thrilled with the findings they warn that more studies need to be done before people are advised to consume these beverages in order to ‘avoid’ diabetes. Today diet and exercise is the still the main advice to lower the risk of type 2 diabetes mellitus.