Drink To Your Health: Study Links Daily Coffee Habit To Longevity. As a recent heart surgery survivor, I am happy to report that coffee is probably good for you. There is no way to know, of course, but the studies are promising. I particularly like the fact that I am not restricted to decaf for the rest of my life. I have cut way back, and pretty much only have the morning cup, and decaf for the rest of the day. But, this study has lifted my spirits on my birthday. On the other hand, you can probably find a study somewhere that just about any food is either good for you or dangerous. Just stay away from tobacco and alcohol.