Moderate caffeine consumption in healthy, nonpregnant adults is not only safe but has been found to increase energy and alertness and enhance physical, motor, and cognitive performance.51 Despite these benefits, one medical journal editorialized that doctors should “temper any message that suggests that caffeine is beneficial . . . given the proliferation of energy drinks that contain massive quantities of caffeine . . .”52 Indeed, drinking a dozen highly caffeinated energy drinks within a few hours could cause a lethal caffeine overdose.
