Overview

• Researchers reviewed data on 46,000 adults from nine cycles of NHANES spanning 1999 to 2018
• One daily cup of black coffee was linked with a 16% lower risk of all-cause mortality, rising to 17% for two to three cups
• Drinking more than three cups per day offered no further mortality benefit
• Coffee with high levels of added sugar or saturated fat showed no association with reduced mortality
• Investigators attribute coffee’s protective effects to bioactive compounds such as caffeine and chlorogenic acid, which may also guard against diabetes, Parkinson’s and certain cancers