Drinking three to four cups of coffee per day may help prevent diabetes by up to 25%, a new study has claimed. Recent scientific evidence has consistently linked regular, moderate coffee consumption with a possible reduced risk of developing type 2 diabetes. The study outlines the epidemiological evidence linking coffee consumption to diabetes prevention, highlighting that three to four cups of coffee per day is associated with an approximate 25% lower risk of type 2 diabetes, compared to none or less than two cups per day. Another study also found an inverse dose dependent response effect with each additional cup of coffee reducing the relative risk by 7%-8 %.
Scientists are still unable to infer a causal effect. The study notes that the association between coffee consumption and a reduced risk of type 2 diabetes could be seen as counter intuitive, as drinking coffee is often linked to unhealthier habits. "A dose-dependent inverse association between coffee drinking and total mortality has been demonstrated in general population and it persists among diabetics.