AHA Statement: Moderate Coffee Safe, May Benefit Heart

A new scientific statement from the American Heart Association (AHA), published in Circulation, concludes that moderate coffee consumption — up to 400 mg of caffeine daily (about 3–5 cups) — is safe for most adults and may be linked to cardiovascular benefits Source: clarin; Source: lavanguardia. The statement, led by Dr. Gregory Marcus of UCSF, reviews decades of evidence on caffeine and heart health.

Key findings

• People who drink moderate amounts of coffee show roughly 10% lower risk of heart attack, 20% lower risk of stroke, and 30% lower risk of type 2 diabetes Source: infobae; Source: elconfidencial.
• The benefits are attributed to polyphenols and antioxidants in coffee, which improve blood vessel function, reduce inflammation, and enhance insulin sensitivity Source: clarin; Source: larepublicaco.
• Coffee consumption is also associated with lower rates of heart failure and certain arrhythmias like atrial fibrillation Source: lavozar.

Important caveats

The statement emphasizes that most evidence is observational, so cause-and-effect is not proven Source: clarin. Unfiltered coffee (e.g., espresso, French press, Turkish coffee) contains cafestol, which can raise LDL cholesterol Source: lavanguardia; Source: infobae. The AHA recommends filtered or instant coffee and avoiding added sugar or cream . Individual tolerance varies; some people may experience palpitations or anxiety . Pregnant women and those with certain medical conditions should consult their doctor .