Science Finds Exactly the Right Amount of Coffee You Should Drink a Day

For years, scientists have traced a link between coffee drinking and heart health, but they weren’t sure exactly why coffee was associated with so many health benefits.

A group of German researchers thinks it has found a possible answer, and it has to do with how the cells in our blood vessels react to caffeine.

The researchers think the caffeine level required for optimal heart health is about four shots’ worth of espresso a day, though everyone’s caffeine concentrations will be a little different.

But don’t overdo it.

Four cups of strong coffee a day might be the recipe for a healthy heart, especially for older adults.

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