Let’s dive into the matter. Research suggests a positive impact on several chronic diseases, including the spreading problem of type 2 diabetes mellitus and liver disease. But even decaf has been shown to have positive health benefits. This lead researchers to assume that other compounds in the coffee, besides caffeine, must have positive health benefits. My best guess would be the polyphenols in the coffee cause those health benefits.
Coffee makes you healthier
Harmful associations linked to coffee consumption have been negated
Coffee for hunger modulation