Coffee vs energy drinks: heart risks

The scientific study conducted by the American Heart Association examines the impact of caffeine on heart health. It concluded that consuming up to 400 mg of caffeine daily, equivalent to about five cups of caffeinated black coffee, is considered safe for most adults and may be associated with a decreased risk of cardiovascular diseases such as stroke and heart failure. However, researchers warned that high doses of caffeine from sources like energy drinks—containing three to four times the amount of caffeine in regular coffee—can cause arrhythmias and further damage the heart. The study clarified that drinking one to three cups of coffee daily is not linked to an increased risk of heart disorders, whereas very high doses of caffeine may lead to elevated blood pressure and rapid heartbeat. Additionally, energy drinks are deemed unsafe due to their high caffeine content.

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