title: I'm a 72-year-old man, and I often wake up four or five times a night to urinate. Why is this?
mesh_terms: D000368:Aged; D003894:Deamino Arginine Vasopressin / Q000627:therapeutic use; D006801:Humans; D008297:Male; D011470:Prostatic Hyperplasia / Q000150:complications; D012076:Renal Agents / Q000627:therapeutic use; D014554:Urination / Q000187:drug effects / Q000502:physiology*; D014555:Urination Disorders / Q000209:etiology / Q000503:physiopathology*
chemical_list: D012076:Renal Agents; D003894:Deamino Arginine Vasopressin