Why do people feel tired after eating roasted turkey?

The notion that people feel tired after eating roasted turkey is commonly referred to as the "turkey tryptophan myth." Tryptophan is an essential amino acid found in turkey and many other foods. While it is true that tryptophan can have a sedative effect, the amount of tryptophan in a typical serving of turkey is not sufficient to cause drowsiness.

Several factors contribute to the feeling of tiredness after a Thanksgiving meal.

1. Overeating: Thanksgiving meals are often large and heavy, leading to overeating. Consuming a significant amount of food, regardless of its composition, can cause sluggishness and fatigue due to the body's efforts in digestion.

2. Carbohydrate Consumption: The traditional Thanksgiving meal includes various carbohydrate-rich dishes such as mashed potatoes, stuffing, and rolls. Carbohydrates cause a rapid rise in blood sugar levels, followed by a sudden drop, which can result in fatigue.

3. Alcohol Consumption: Many Thanksgiving celebrations involve drinking alcoholic beverages. Alcohol can have a sedative effect, contributing to feelings of tiredness.

4. Social and Emotional Factors: Thanksgiving is often associated with family gatherings, socializing, and emotional engagements. These factors, combined with the indulgent meal, can lead to feelings of relaxation and a desire to rest.

5. Postprandial Somnolence: After a large meal, the body diverts blood flow to the digestive system to aid in digestion. This can result in a temporary decrease in blood flow to the brain, causing drowsiness.

6. Circadian Rhythm: The natural tendency for sleepiness in the afternoon or evening, known as the circadian rhythm, can also contribute to the perception of tiredness after a big meal.

It is essential to note that individual sensitivity to these factors may vary. Some people may experience more pronounced tiredness after a Thanksgiving meal, while others may not be affected as significantly.