title: [Aging and calcium regulating hormones].
mesh_terms: D015652:25-Hydroxyvitamin D 2; D000328:Adult; D000368:Aged; D000375:Aging; D002116:Calcitonin / Q000502:physiology*; D002118:Calcium / Q000378:metabolism*; D004872:Ergocalciferols / Q000031:analogs & derivatives / Q000097:blood; D005260:Female; D006801:Humans; D008297:Male; D010281:Parathyroid Hormone / Q000502:physiology*; D014807:Vitamin D / Q000502:physiology*
chemical_list: D004872:Ergocalciferols; D010281:Parathyroid Hormone; D014807:Vitamin D; D015652:25-Hydroxyvitamin D 2; D002116:Calcitonin; D002118:Calcium