Feeling sleepy after eating turkey is commonly attributed to tryptophan, an amino acid that can be converted into sleep-related neurotransmitters like serotonin and melatonin, but this is more myth than fact. Turkey does contain tryptophan, yet not in amounts significantly higher than other meats, and when consumed in large meals with many other foods, the effect of tryptophan is further diluted.

Tryptophan and Sleepiness

• Tryptophan helps make serotonin and melatonin, which are related to sleep and relaxation.

• Many foods, including chicken and nuts, have similar or greater amounts of tryptophan than turkey.

• The presence of other amino acids from a big meal means tryptophan’s sleep-inducing effects are minimized.

Large Meals and Drowsiness

• Fatigue after eating turkey is caused mostly by overeating, especially carbohydrate-rich foods like potatoes, stuffing, and desserts.

• Heavy meals direct blood flow toward the digestive system, away from the brain, leading to tiredness.

• Alcohol, common at holiday meals, can intensify sleepiness.

Summary Table: Turkey's Sleepy Reputation

Factor| Actual Effect
---|---
Tryptophan| Limited impact compared to whole meal
Other amino acids| Dilute tryptophan’s role
Large portions| Prominent contributor to sleepiness
Carbs and sugar| Increase fatigue after meals
Alcohol| Adds to drowsiness

The main reason for feeling sleepy after eating turkey is the size and makeup of the holiday meal, rather than any special ingredient found in turkey.