Here’s another reason to stick with caffeine: It may slow your biological aging process! That’s from the Stanford School of Medicine. The reason? Because most of us tend to develop inflammation in our tissues, veins, and arteries as we age, which can lead to heart disease, cancer, Alzheimer’s, osteoarthritis and even depression. But the metabolites in caffeine help minimize inflammation. Bottom line: Coffee may be the closest thing we have to a fountain of youth.