title: A discussion of the aging process: current theories.
mesh_terms: D000375:Aging; D000818:Animals; D001669:Biochemical Phenomena; D001671:Biochemistry; D004032:Diet; D002149:Energy Intake; D005796:Genes; D006706:Homeostasis; D006801:Humans; D007030:Hypothalamo-Hypophyseal System / Q000502:physiology; D012107:Research Design; D009626:Terminology as Topic