Serotonin (5-HT) is a hormone and neurotransmitter used for regulatory purposes in animal CNS. In the human brain, serotonin is involved in many physiological functions such as sleep, pain, mood and is the precursor to melatonin, a hormone produced in the pineal gland.
Wortsman, J, Slominski, A, Zmijewski, MA, Paus, R, Tobin, DJ
Rook, GA, Lowry, CA, Lightman, SL, Evans, AK, Nutt, DJ, Ruddick, JP
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