So you like your coffee or tea, energy drinks, or caffeinated mints. But you're afraid too much caffeine is unwise.
In a meta-study published in the British Medical Journal, the researchers looked at the results of 218 other studies, most of the observational, to find the optimal amount of coffee consumption per day.
Three to four 8-ounce cups per daywill not only satisfy your caffeine cravings, but it results in some health benefits.
A 2015 study of more than 1.2 million people found that folks who drink 3 to 5 cups of black coffee a day have fewer heart problems than those who drink none. People who drink 5 or more cups don’t have any more problems than anyone else.
Two other studies, meta-analyses that collated data from 11 other research articles, found that drinking 2 to 6 cups a day results in a lower risk of stroke disease. One of those meta-studies included data from more than 500,000 participants.