Decaf coffee isn't actually caffeine-free -- here's how much caffeine you're really drinking

Steve Cukrov/Shutterstock The INSIDER Summary: We asked two coffee experts if decaf coffee still has caffeine in it. The answer was "yes." If you are sensitive to caffeine, you may want to lay off the decaf at night. If you think drinking decaf coffee shields you from the effects of caffeine, you're wrong. Although it is often assumed that decaf coffee is 100% caffeine free,USDA regulationsreport thatdecaffeinatedcoffee only needs to be 97% caffeine free. Although 3% is a relatively small amount...