With Thanksgiving coming up, you may have heard about the effects of turkey on the brain. The theory goes that turkey contains high levels of tryptophan, which is a key ingredient of serotonin and ...

We don’t need to do this every year. Indeed, a tryptophanic fever was about to spread across America. By the end of the decade, tryptophan was being widely sold in supplements as a treatment for ...

Almost as old as the Thanksgiving holiday itself is the annual musing: Does turkey make you sleepy? The alleged culprit (or misunderstood target) of the leading cause of Turkey Day naps is tryptophan.