AHA Says Up to 400 mg of Coffee Is Safe as Energy Drinks Raise Heart Risks
Updated
Updated · The Well News · Aug 4
AHA Says Up to 400 mg of Coffee Is Safe as Energy Drinks Raise Heart Risks
3 articles · Updated · The Well News · Aug 4
Summary
Up to 400 mg of caffeine a day—about three to five 8-ounce coffees—is safe for most adults, the American Heart Association said in a new Circulation scientific statement.
Moderate coffee intake was linked in prior research to lower risks of coronary disease, stroke, atrial fibrillation recurrence, type 2 diabetes and, in some cohorts, heart failure.
Energy drinks and shots drew the clearest warnings: studies showed blood-pressure spikes, while case reports tied them to atrial fibrillation even in otherwise healthy young adults.
The AHA said the evidence base is still mostly observational, with genetics affecting short-term caffeine response, and called for more randomized trials to separate caffeine's effects from other coffee compounds.