The Role of Tryptophan in Sleepiness

Tryptophan is an essential amino acid that the human body cannot synthesize, making it necessary to obtain through dietary sources. While turkey contains tryptophan, it is not unique among protein sources, as other meats and foods like cheese and milk also boast similar levels. This amino acid is a precursor to serotonin and melatonin, both of which are associated with promoting sleepiness. However, the relationship between consuming tryptophan-rich foods and experiencing sleepiness is more complex than it seems.