Heart-attack patients who drink one or two cups of coffee a day are 20 percent less likely to die prematurely from heart damage compared to java teetotalers, a new study finds.

The York University study tracked 3,721 heart-attack survivors in the UK, chronicling their coffee-drinking habits.

It’s not clear how coffee helps the human body. Previous studies have found that three to five cups a day helped Parkinson’s patients. Another found it helps fight liver cancer.

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