The record
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- The American Heart Association has issued a scientific statement in the journal Circulation saying that up to 400 mg of caffeine a day, roughly five 8-ounce cups of coffee, is generally safe for most healthy adults.
- The statement found that moderate caffeinated coffee consumption is not linked to increased cardiovascular risk and may be associated with a lower risk of coronary artery disease, stroke, heart failure and type 2 diabetes.
- The AHA stressed this is not a recommendation to start drinking more coffee, and that findings for ordinary coffee do not apply to energy drinks, caffeine shots or purified caffeine products, which have raised concerns including abnormal heart rhythms.
- Caffeine responses vary by individual, and the Association has called for more randomised controlled trials to confirm the direct effects.
What to watch next
- Results of further randomised controlled trials on caffeine's direct cardiovascular effects, which the AHA has called for
- Regulatory or health guidance on high-dose products such as energy drinks and caffeine shots, which the statement separates from normal coffee
- Any future clarification on higher caffeine consumption levels, which the statement links to potentially increased heart-failure risk
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Named United States · American Heart Association · Circulation · US Food and Drug Administration
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