Nutrition and the brain.
D000818:Animals; D001069:Appetite Regulation; D001921:Brain / Q000378:metabolism* / Q000502:physiology; D004032:Diet; D005246:Feedback; D006801:Humans; D051381:Rats; D012701:Serotonin / Q000096:biosynthesis*; D014364:Tryptophan / Q000378:metabolism
D012701:Serotonin; D014364:Tryptophan