biology question #1730

Sarah, a 20 year old female from Fredericton, NB asks on December 8, 2003,

Q:

What is the chemical in banana that causes drowsiness?
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the answer

Barry Shell answered on December 8, 2003, A:

Bananas contain the chemical tryptophan, an amino acid that is converted into the calming and sleep-inducing brain chemical serotonin.

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