coffee may have a protective effect against chronic health problems, including liver disease, colorectal cancer, type 2 diabetes and stroke. Drinking three cups of coffee per day has also been associated with a reduced risk of cardiovascular disease—in one study, 21% lower than those who abstained—and it doesn’t appear to increase people’s risk of irregular heartbeat.

coffee may have a protective effect against chronic health problems, including liver disease, colorectal cancer, type 2 diabetes and stroke. Drinking three cups of coffee per day has also been associated with a reduced risk of cardiovascular disease—in one study, 21% lower than those who abstained—and it doesn’t appear to increase people’s risk of irregular heartbeat.