Though caffeine recommendations are based on a specific amount of milligrams, the effects can vary from person to person, and different individuals may be able to tolerate different amounts.

Researchers also recommend that children and adolescents not exceed an intake of 2.5 milligrams of caffeine per kilogram of body weight per day, though they state that the available literature for these groups was “scant.” For a child weighing 55 pounds, this translates to a daily limit of 62.5 milligrams of caffeine. The review also revealed that healthy pregnant women can consume up to 300 milligrams of caffeine daily, an amount that is “generally not associated with adverse reproductive and developmental effects,” though the American College of Obstetricians and Gynecologists cautions pregnant women to limit caffeine to 200 milligrams daily. What that energy drink can do to your body (Depending on the source, an 8-ounce cup of brewed coffee can contain 75 to 165 milligrams of caffeine.) The researchers concluded that healthy adults can safely consume up to 400 milligrams of caffeine daily, the amount in about four 8-ounce cups of coffee. The research evaluated caffeine intake from any source and was supported with grants from the American Beverage Association and the National Coffee Association, though neither association participated in any aspect of the review. What are the recommendations on caffeine?Ī recent systematic review involving nearly 400 studies looked at adverse health effects associated with caffeine consumption, including general toxicity, cardiovascular effects, effects on bone and calcium, behavioral effects, and reproductive and developmental effects. For some, caffeine may have the unintended consequence of staving off hunger, and it may even make foods seem less sweet, though few professionals would endorse it as a diet aid.īut can there be too much of a good thing when it comes to caffeine? And if so, how much is too much? When might it be wise to cut back on caffeine consumption? Although we know it can be counted on for a pick-me-up, more and more research is revealing other upsides of caffeine, including improved memory, enhanced athletic performance, beneficial effects on liver health and possible protection against Parkinson’s disease.

400 mg caffeine