title: Aging and circadian rhythms.
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging / Q000378:metabolism / Q000502:physiology*; D000818:Animals; D001833:Body Temperature Regulation; D001921:Brain / Q000378:metabolism / Q000502:physiology*; D002940:Circadian Rhythm; D003704:Dementia / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D018377:Neurotransmitter Agents / Q000378:metabolism
chemical_list: D018377:Neurotransmitter Agents