Research over the past decade suggests that coffee consumption may protect against type 2 diabetes , Parkinson’s Disease, and liver cancer . For example, the link between coffee consumption and risk of type 2 diabetes has been evaluated in more than 25 cohort studies
From America, Europe, and Asia and results from nearly all of these studies suggest that coffee may lower diabetes risk. Interestingly, similar results were observed for caffeinated and decaffeinated coffee suggesting that compounds other than caffeine may lower risk of diabetes. In addition, our recent meta-analysis on coffee consumption and cardiovascular diseases suggested that moderate coffee consumption (3-5 small cups per day) is linked to a slightly lower risk of cardiovascular diseases.
However, this is an active area of research right now, and it’s not at the stage where we would say, ”Start drinking coffee to increase your health even if you don’t like it.”
And…although coffee may have fewer risks compared with benefits, keep in mind that other beverages, such as milk and some fruit juices, contain nutrients that coffee doesn't. Also, adding cream and sugar to your coffee adds fat and calories — up to hundreds of calories in some cases.