Beyond the morning buzz: How does coffee affect your heart?
People who drink about three cups of coffee a day are slightly less likely to develop heart disease or to die from it than people who don’t drink coffee. In sensitive people, the caffeine in coffee may trigger a pounding, irregular heartbeat. Drinking unfiltered (French press or Turkish) coffee may slightly raise cholesterol levels. But in general, even for people with heart disease, modest coffee consumption appears to be safe. However, people should not rely on coffee to spend less time sleeping, because sleep deprivation is very hard on the heart.
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