A new scientific statement from the American Heart Association (AHA) concludes that moderate coffee consumption is generally safe for most adults and may be associated with a reduced risk of several cardiovascular diseases. The comprehensive review, published in the AHA's peer-reviewed journal Circulation, analyzes current evidence on caffeine, coffee, and heart health, providing updated guidance for the public and medical community.
The statement defines a safe level of consumption as up to 400 milligrams of caffeine daily, equivalent to approximately three to five 8-ounce cups of standard coffee. According to the review, this level of intake is linked to a potentially lower risk of coronary heart disease, heart failure, and stroke. However, the AHA highlights a key distinction based on brewing method, noting that unfiltered coffee, such as French press or espresso, contains cafestol, a compound that can elevate LDL cholesterol. Paper-filtered drip coffee and instant coffee do not present the same concern.
In contrast, the AHA issued a strong caution regarding energy drinks and concentrated caffeine shots, linking them to adverse cardiovascular events like elevated blood pressure and irregular heart rhythms. The report also noted that additives like sugar, cream, and syrups can negate the potential health benefits of coffee. While the statement supports moderate coffee drinking for most healthy adults, it stops short of recommending that people start drinking coffee for health reasons and advises individuals with high blood pressure to consult their doctor.