Researchers at Harvard University have suggested that by adding to your daily coffee consumption by one and a half cups per day, you can actually reduce your risk of developing type 2 diabetes. The researchers examined the links between four-year changes in coffee and tea consumption and the risk of type 2 diabetes in the subsequent four years after these changes were made.

Their research indicated that by increasing coffee consumption by one-and-half cups per day over a four-year period you can reduce the risk of developing type 2 diabetes by 11%. To test this theory the researchers at the world famous Boston University used observational data from three large US-based studies.  Data on diet, lifestyle, and medical conditions was collected every two to four years for over a 20-year-period on over 120,000 people.