link: https://www.sciencedaily.com/releases/2018/06/180621141008.htm

Caffeine consumption has been associated with lower risks for multiple diseases, including type II diabetes, heart disease, and stroke, but the mechanism underlying these protective effects has been unclear. A new study now shows that caffeine promotes the movement of a regulatory protein into mitochondria, enhancing their function and protecting cardiovascular cells from damage.

It’s interesting to note that the food police were after coffee for years, no longer.