There’s a sweet spot when it comes to drinking coffee—certainly as far as the health of your heart is concerned.
Drinking three cups a day lowers your systolic blood pressure—the one that measures your cardiovascular system when your heart beats—by as much as 9.7mmHg. Two cups a day lowers it by 5.2mmHg compared to non-coffee drinkers.
Drink more than that and it starts to raise your blood pressure reading, say researchers at the Sant’Orsola-Malpighi University Hospital in Bologna, Italy. They tracked the coffee-drinking habits of 1503 participants in the Brighella Heart Study.
Earlier studies had shown that drinking an average of 3.5 cups a day had a moderate effect on cardiovascular disease, reducing the risk by around 15 percent.