AHA says up to 5 cups coffee daily safe for heart

A new scientific statement from the American Heart Association concludes that moderate coffee consumption is safe for most adults and is associated with a lower risk of several cardiovascular diseases. Published in the journal Circulation on July 20, 2026, the comprehensive review of decades of research found that for the average person, drinking up to five cups of coffee per day, or consuming up to 400 milligrams of caffeine, does not increase cardiovascular risk and may provide significant health benefits.

The statement clarifies years of conflicting public health guidance by distinguishing between coffee and other caffeine sources. It indicates that habitual coffee consumption is linked to a lower risk of stroke, heart failure, coronary artery disease, atrial fibrillation, and type 2 diabetes. For instance, one clinical trial cited found that patients with atrial fibrillation who drank at least one cup of coffee daily had a 39% lower chance of the condition recurring compared to those who abstained. Overall, drinking three to four cups per day was associated with a 21% lower stroke risk, while the lowest risk for heart failure appeared at around four cups daily.