title: Low serotonin levels and seasonal affective disorder.
mesh_terms: D000223:Adaptation, Psychological; D006801:Humans; D010789:Phototherapy; D021381:Protein Transport; D016574:Seasonal Affective Disorder / Q000503:physiopathology* / Q000523:psychology / Q000628:therapy; D012701:Serotonin / Q000032:analysis / Q000502:physiology* / Q000528:radiation effects
chemical_list: D012701:Serotonin