How much coffee is too much coffee?

Coffee can contain anywhere from 60 to 120 mg per 8-ounce serving, depending on how it is brewed. Teas contain far less, averaging 20 to 90 mg per 8-ounce cup, as do soft drinks, which pack around 20 to 40 mg per can. read more

Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two "energy shot" drinks. read more

The health benefits of coffee are overwhelming, but getting too much caffeine can be harmful. So we asked experts for the perfect daily dose, plus the lowdown on coffee's impact on your health, such as developing Alzheimer’s, diabetes, and other conditions. read more