Aging changes in the kidneys and bladder: MedlinePlus Medical Encyclopedia (2024)

The kidneys filter the blood and help remove wastes and extra fluid from the body. The kidneys also help control the body's chemical balance.

The kidneys are part of the urinary system, which also includes the ureters, bladder, and urethra.

Muscle changes and changes in the reproductive system can affect bladder control.

AGING CHANGES AND THEIR EFFECTS ON THE KIDNEYS AND BLADDER

As you age, your kidneys and bladder change. This can affect their function.

Changes in the kidneys that occur with age:

  • Amount of kidney tissue decreases and kidney function diminishes.
  • Number of filtering units (nephrons) decreases. Nephrons filter waste material from the blood.
  • Blood vessels supplying the kidneys can become hardened. This causes the kidneys to filter blood more slowly.

Changes in the bladder:

  • The bladder wall changes. The elastic tissue becomes stiffer and the bladder becomes less stretchy. The bladder cannot hold as much urine as before.
  • The bladder muscles weaken.
  • The urethra can become partially or totally blocked. In women, this can be due to weakened muscles that cause the bladder or vagin* to fall out of position (prolapse). In men, the urethra can become blocked by an enlarged prostate gland.

In a healthy aging person, kidney function declines very slowly. Illness, medicines, and other conditions can significantly degrade kidney function.

COMMON PROBLEMS

Aging increases the risk of kidney and bladder problems such as:

WHEN TO CONTACT A MEDICAL PROFESSIONAL

Contact your health care provider right away if you have any of the following:

  • Signs of a urinary tract infection, including fever or chills, burning when urinating, nausea and vomiting, extreme tiredness, or flank pain
  • Very dark urine or fresh blood in the urine
  • Trouble urinating
  • Urinating more often than usual(polyuria)
  • Sudden need to urinate (urinary urgency)

As you grow older, you will have other changes, including:

References

Griebling TL. Aging and geriatric urology. In: Partin AW, Dmochowski RR, Kavoussi LR, Peters CA, eds. Campbell-Walsh-Wein Urology. 12th ed. Philadelphia, PA: Elsevier; 2021:chap 128.

Smith PP, Kuchel GA. Aging of the urinary tract. In: Fillit HM, Rockwood K, Young J, eds. Brocklehurst's Textbook of Geriatric Medicine and Gerontology. 8th ed. Philadelphia, PA: Elsevier; 2017:chap 22.

Walston JD. Common clinical sequelae of aging. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 22.

Review Date 7/21/2022

Updated by: Frank D. Brodkey, MD, FCCM, Associate Professor, Section of Pulmonary and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

Related MedlinePlus Health Topics

Aging changes in the kidneys and bladder: MedlinePlus Medical Encyclopedia (2024)

FAQs

What changes happen to a person's kidney and bladder as they age? ›

Aging increases the risk of kidney and bladder problems such as: Bladder control issues, such as leakage or urinary incontinence (not being able to hold your urine), or urinary retention (not being able to completely empty your bladder) Bladder and other urinary tract infections (UTIs) Chronic kidney disease.

How often should a 70 year old man urinate at night? ›

If your frequent urination is a factor of aging, it's good to keep in mind that adults older than 60 should expect to use the bathroom at least once every night. If you're between 65 and 70 and going more than twice a night, you should make an appointment with your doctor.

How do kidneys change with age? ›

Senescence or normal healthy aging of the kidney is characterized by progressively increasing nephrosclerosis with loss of functional glomeruli and decreased overall kidney function as determined by GFR.

What are the symptoms of aging kidneys? ›

The first signs of kidney disease may be general and can include:
  • high blood pressure.
  • changes in the amount and number of times urine is passed (for example, at night)
  • changes in the appearance of urine.
  • blood in the urine.
  • puffiness of the legs and ankles.
  • pain in the kidney area.
  • tiredness.
  • loss of appetite.

What should your kidney function be at 70 years old? ›

A GFR between 60 and 89 may be normal for some people — such as the elderly or infants. That's if they don't have any kidney damage. A GFR between 60 and 89 for three months or longer along with kidney damage is a sign of early CKD.

What happens to the bladder in old age? ›

Lower urinary tract symptoms are more prevalent among the elderly, and clinical urodynamic studies have demonstrated advancing age to be associated with a reduced bladder capacity, an increase in uninhibited contractions, decreased urinary flow rate, diminished urethral pressure profile (particularly in women), and ...

How often should a male over 70 urinate? ›

In general, you can expect to pee once a night in your 40s and 50s, twice a night in your 60s and 70s and even two to three times a night in your 80s and beyond. But waking up too often in the night can keep you from getting enough sleep and is sometimes a sign of a health condition.

How often should a 72 year old male urinate? ›

For most people, the normal number of times to urinate per day is between 6 – 7 in a 24 hour period. Between 4 and 10 times a day can also be normal if that person is healthy and happy with the number of times they visit the toilet.

Is peeing every 2 hours normal? ›

Frequent urination is a common issue. Typically, a person urinates 6–7 times per day. People with urinary frequency may experience other symptoms, such as dribbling, urgency, and abdominal pain. If they experience other symptoms –– or the condition affects their quality of life –– they can contact a doctor.

What are the five stages of old age? ›

Many older adults find physical activity increasingly difficult, some may experience emotional changes and start to withdraw, and some will experience cognitive issues.
  • What Is the Typical Process of Aging? ...
  • Stage 1: Independence. ...
  • Stage 2: Interdependence. ...
  • Stage 3: Dependency. ...
  • Stages 4 & 5: Crisis Management and End of Life.

Can drinking more water improve GFR? ›

Volume of water intake positively correlated to estimated glomerular filtration rate (eGFR), and negatively correlated to urinary albumin to creatinine ratio (UACR), as well as plasma osmolality and urine osmolality, although the correlations were weak.

Have not urinated in 3 days? ›

Anuria, sometimes called anuresis, refers to the lack of urine production. This can happen as a result of conditions like shock, severe blood loss and failure of your heart or kidneys. It can also be due to medications or toxins. Anuria is an emergency and can be life-threatening.

What not to drink if you have kidney problems? ›

What drinks should people with kidney disease avoid?
  • Cola beverages: Studies show that drinking 2 or more cola drinks a day may be harmful for people with kidney disease. ...
  • Alcohol: Drinking alcohol makes the kidneys less able to filter the blood and increases blood pressure, which can lead to kidney damage.
Sep 7, 2023

What foods are bad for kidneys? ›

1. Salt
  • Canned soups.
  • Processed meats like lunch meats, hot dogs, sausages.
  • Frozen pizza.
  • Frozen dinners.
  • Snack foods like chips, crackers, pretzels.
  • Condiments like ketchup, BBQ sauce, soy sauce.
  • Salad dressing.
  • Pickled foods like pickles, olives, beets.

What color is your pee if you have kidney disease? ›

If your kidneys are failing, they may retain fluids, and harmful waste can build up in your body. If this happens, your urine may include excess protein, toxins, and blood. This can cause your urine to change color, becoming a darker tan, brown, or even slightly red.

At what age does kidney function start to decline? ›

Kidney disease can develop at any time, but those over the age of 60 are more likely than not to develop kidney disease. As people age, so do their kidneys. According to recent estimates from researchers at Johns Hopkins University, more than 50 percent of seniors over the age of 75 are believed to have kidney disease.

What is normal kidney function for a 60 year old? ›

What is a normal eGFR number?
Age (years)Average eGFR
40–4999
50–5993
60–6985
70+75
2 more rows

What color is urine when your kidneys are failing? ›

If your kidneys are failing, they may retain fluids, and harmful waste can build up in your body. If this happens, your urine may include excess protein, toxins, and blood. This can cause your urine to change color, becoming a darker tan, brown, or even slightly red.

How much does a 70 year old man's bladder hold? ›

Average Bladder Capacity 350-550 cc.

In the elderly, the capacity may decrease to 250 - 300 cc. Approximately 150-250 cc may be stored (less in the elderly) before there is a sensation of bladder pressure. As the bladder fills beyond 150-250 mL the individual begins toilet seeking.

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