Coffee may protect your heart but energy drinks could harm it

Caffeine is the most widely used stimulant and psychoactive substance in the world, and coffee is how most people consume it. According to a new scientific statement from the American Heart Association, most adults can safely consume up to 400 mg of caffeine/day (or up to five 8-ounce cups of caffeinated coffee per day). For some people, moderate coffee consumption may also be associated with a lower risk of cardiovascular disease.

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