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Is Holding In Your Urine Harmful?

General Urology · Last updated: 11 November 2026
Is Holding In Your Urine Harmful?
In brief

Holding in urine regularly and for long periods may seem harmless in the short term, but over time it can affect bladder health. This habit can make urinary tract infections more likely, make it harder to empty the bladder fully, weaken the bladder muscles and pave the way for urinary incontinence later on.

Putting off the toilet now and then usually causes no problems. The trouble starts when it becomes a daily habit. Below you can find out what holding in urine for long periods does to the bladder and which symptoms mean you should see a urologist.

What Happens in the Bladder?

The bladder is designed to be emptied when it reaches a certain level of fullness. When it is not emptied regularly, pressure on the muscle wall increases, and over time changes can occur in both its structure and how it works:

  • A tendency to urinary tract infections
  • Incomplete bladder emptying
  • Weakening of the bladder muscles
  • Urinary incontinence later on

Urine that sits inside for a long time is a favourable environment for bacteria, and this is one of the factors that raise the risk of infection.

Constantly suppressing the urge can also change the way the bladder senses fullness. As the bladder muscle adapts, it may not contract as it should and may not empty fully. As a result, people may develop symptoms such as frequent urination, sudden urgency, straining to pass urine, a feeling of incomplete emptying or urinary incontinence.

When Should You See a Doctor?

If the following symptoms occur regularly, it is advisable to see a urologist or a pelvic floor specialist:

  • Needing to pass urine often
  • Straining to pass urine
  • A feeling that the bladder has not emptied fully
  • Urinary incontinence

Simple Habits for Your Bladder

Do not delay when you need to pass urine, and go to the toilet at regular intervals. Drink enough fluid, in a balanced way. If you notice a change in how often you pass urine or in your urine flow, make a note of it; this is very useful at the consultation. These small habits can prevent many problems that might otherwise arise later.

Frequently asked questions

Is it harmful to hold in urine occasionally?
Putting off the toilet now and then usually causes no problems. The risk arises when it becomes a habit.
Does holding in urine damage the kidneys?
Holding in urine occasionally does not usually harm the kidneys. However, doing so all the time can increase the risk of urinary tract infection, and these infections can, rarely, spread to the kidneys.
Can holding in urine cause a urinary tract infection?
Urine that sits in the bladder for a long time provides a good environment for bacteria to grow. So a habit of constantly holding in urine can make infection more likely.
How many times a day is it normal to pass urine?
This varies with how much you drink and from person to person. If there is a marked increase, or symptoms such as getting up often at night or burning, an assessment is recommended.
Can holding in urine damage the bladder permanently?
Kept up for years, this habit can weaken the bladder muscles and make it harder to empty the bladder fully. Once symptoms start, it is important to change the habit and have an assessment.