Is Your Daily Black Coffee Actually Good for You? Experts Reveal

Black coffee, particularly when consumed without excess sugar or high-calorie additives, can be a relatively healthy beverage for many adults. Research has associated moderate coffee consumption with a lower risk of several chronic conditions, including type 2 diabetes, cardiovascular disease and certain liver disorders. A large BMJ umbrella review found that coffee consumption was more often associated with health benefits than harm, with the strongest associations for several outcomes seen around three to four cups a day. However, most of the evidence is observational, so it does not prove that coffee itself directly prevents disease or extends lifespan.

Coffee may also support liver health and has been associated with lower risks of fatty liver disease, fibrosis, cirrhosis and liver cancer. Studies have similarly linked coffee intake with a reduced risk of type 2 diabetes and Parkinson’s disease, while some research has found associations with lower risks of particular cancers, including liver and endometrial cancers. Coffee is not a substitute for adequate sleep, regular exercise or a balanced diet, and people who are sensitive to caffeine or have certain medical conditions should seek medical advice before increasing their intake. For most healthy adults, the FDA cites up to 400 mg of caffeine a day as an amount not generally associated with negative effects, although caffeine content varies considerably between beverages.