Coffee also might offer protection against liver cancer, cirrhosis and Parkinson's disease.
However, pregnant women need a one cup limit say the researchers and some people with hard to control hypertension should stick to decaf.
But for the rest of us, it might be a healthy drink.
"Coffee was seen as very unhealthy," Rob van Dam, a coffee researcher and epidemiologist at the Harvard School of Public Health, told the Los Angeles Times . "Now we have a more balanced view. We're not telling people to drink it for health. But it is a good beverage choice."
The new research touting coffee's health benefits is not perfect. Most of the studies are observational based on people's recollections of how much coffee they consumed. The studies also don't prove that coffee was the cause of improved health outcomes.
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