Question

which of the following statements about the amino acid tryptophan is true?
a) foods high in tryptophan are associated with poor sleep.
b) a meal containing foods high in tyramine and low in tryptophan should be eaten within an hour of bedtime to encourage sleep.
c) foods high in tryptophan should not be eaten on an empty stomach.
d) peanut butter, bananas, milk, yogurt, and eggs are among the foods high in tryptophan.

Explanation:

• Option A: Tryptophan is actually associated with better sleep as it helps in the production of serotonin and melatonin. So, this option is false.
• Option B: Foods high in tyramine (which can stimulate the nervous system) and low in tryptophan are not ideal for promoting sleep close to bedtime. This option is false.
• Option C: There is no general rule that tryptophan - rich foods should not be eaten on an empty stomach. This option is false.
• Option D: Peanut butter, bananas, milk, yogurt, and eggs are known to be good sources of tryptophan. This option is true.

Answer:

D. Peanut butter, bananas, milk, yogurt, and eggs are among the foods high in tryptophan.