Effects of Aging on Bladder and Kidneys



  • Blood vessels supplying the kidneys can become hardened, causing the kidneys to filter blood more slowly
  • Nephrons filter waste material from the blood
  • Number of filtering units (nephrons) decreases
  • Overall amount of kidney tissue decreases



    • Blockage of the urethra: In women this is due to weakened muscles causing the bladder or vagina to fall out of position (prolapse).  In males the urethra can become blocked by an enlarged prostate gland
    • The bladder muscles weaken
    • The bladder wall changes with the elastic tissue becoming tough and the bladder becoming less stretchy.  The bladder cannot hold as much urine as before


    • Aging increases the risk to kidney problems as well as bladder problems
    • Bladder and other urinary tract infections (UTIs)
    • Bladder control issues (urinary incontinence or retention or leakage)
    • Chronic kidney disease


    • Signs of a urinary tract infection, including chills or fever, nausea and vomiting, low back pain, extreme tiredness
    • Trouble urinating
    • Urinary urgency (Sudden urination need)
    • Urinating more often than usual
    • Very dark urine or fresh blood in the urine

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