Coffee contains caffeine, a stimulant, which is widely regarded as safe for healthy adults at about 400 milligrams per day, or roughly the equivalent of four or five cups brewed at home.Coffee has been associated with multiple health benefits and even a lower risk of dying, based on large studies that observed participants’ behavior.
Despite research that has shown moderate coffee consumption doesn’t raise the risk of heart rhythm problems, some professional medical societies still caution against consuming caffeine.The latest research:Researchers outfitted 100 healthy volunteers with gadgets that continuously monitored their heart function, daily steps, sleep patterns and blood sugar.
The volunteers, who were mostly younger than 40, were sent daily text messages over two weeks instructing them to drink or avoid caffeinated coffee on certain days.
The results were reported Wednesday in the New England Journal of Medicine.This type of study, which directly measures the biological effects of drinking or not drinking caffeinated coffee in the same people, is rare and provides a dense array of data points, said study co-author Dr.