AHA labells five cups of coffee as 'safe' for heart health
Scientific review shows moderate daily black coffee consumption is safe and potentially beneficial for heart health
Most healthy adults can safely drink up to five cups of black coffee a day without harming their heart, according to a new scientific statement issued by the American Heart Association (AHA) on 20 July.
Published in the journal Circulation, the review examined recent research into caffeine and cardiovascular health. It concluded that consuming as much as 400mg of caffeine daily, roughly equivalent to five 8-ounce cups of black coffee, does not raise the risk of heart disease for most people.
Moderate drinking linked to lower disease risk
Researchers behind the statement found that drinking two to four cups of caffeinated coffee each day was associated with reduced risk of heart disease, stroke and heart failure. However, exceeding four cups was linked to a higher chance of heart failure in some individuals. Black coffee taken without sugar or cream also appeared to lower the likelihood of type 2 diabetes and certain irregular heart rhythms, though scientists noted it remains unclear whether these benefits stem from caffeine itself or other compounds found naturally in coffee.
Energy drinks pose greater risk
The statement drew a clear distinction between coffee and heavily caffeinated products such as energy drinks, which contain significantly higher concentrations of caffeine and have been tied to raised blood pressure and irregular heartbeats.
Response to caffeine varies by person
Experts stressed that caffeine's effects differ from person to person, depending on genetics, age, metabolism and existing medication. While some people tolerate higher intakes without issue, others may experience palpitations, anxiety or disrupted sleep. The AHA said further clinical trials are needed to clarify how various caffeine sources affect heart health over the long term.
Note: This article is based on user-generated content from social media, and the claims have not been independently verified. It is for informational purposes only and is not a substitute for professional medical advice. Readers should consult a doctor with any questions about a medical condition.