Here is an article from delish.com

For those of you whose morning isn't complete without a cup of coffee (or two or three), I have some good news from you: There's another study in your corner showing the habit could be good for your health.

"Association of Coffee Drinking With Mortality by Genetic Variation in Caffeine Metabolism," published last year in the Journal of the American Medical Association (JAMA), "provides further evidence that coffee drinking can be part of a healthy diet and offers reassurance to coffee drinkers"—especially in regards to mortality

Researchers looked at more than 500,000 people between the ages of 38 and 73 in the U.K., 380,000 of whom were coffee drinkers. Their objective was to study the links between drinking coffee and mortality based on how well your body can absorb caffeine.

The results will surprise even the heaviest of coffee drinkers: They found that coffee was inversely related to mortality among people who drank 1 to 8 or more cups of coffee a day, even for those whose bodies were slower to absorb caffeine. This includes ground, instant, and decaf coffee, interestingly enough.

In other good-for-Starbucks-lovers news, coffee might be good for your skin. Another study published in JAMA last December found that participants who drank 4 cups of coffee per day were less likely to develop rosacea compared with participants who did not drink coffee. Who knew!