Add Yahoo as a preferred source to see more of our stories on Google. Those smiles probably aren’t thanks to tryptophan. Monkey Business Images/Shutterstock.com Every Thanksgiving, myths of the ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Yup, pretty much everyone has made the Thanksgiving joke about tryptophan leading to couch naps, but I’m ...

Tryptophan is often dismissed as the reason for post-Thanksgiving fatigue, but its role in human health extends far beyond the holiday table. As an essential amino acid, tryptophan is crucial for ...

Sometimes the stories we tell ourselves have a way of becoming true. Take the turkey-makes-you-sleepy tale. A quick survey of holiday travelers commuting through Washington's Union Station confirms ...

The claim that eating turkey can make people particularly sleepy has long been shared around Thanksgiving (and sometimes Christmas) dinner tables. Fans of the sitcom "Seinfeld " may recall one episode ...

A missing nutrient in breast milk might explain health problems among children of moms with HIV Their breast milk has significantly lower levels of tryptophan, an essential amino acid Tryptophan is ...

Yup, pretty much everyone has made the Thanksgiving joke about tryptophan leading to couch naps, but I’m here to stop the allegations. Tryptophan doesn’t make you sleepy on Thanksgiving, and it ...