Constipation and Incontinence: The Bowel and Bladder Connection
By Kim Hando
, Owner & Founder
│ 01 July 2026
Clinically reviewed by
Marcus Hando
, BHlthSc (Public Health), MParamedic Practice, GradDipCritCarePara (Monash)
Last reviewed: 21 June 2026
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A friend mentions her bladder leaks have got worse, and almost in the same breath she says she has been a bit blocked up lately. She thinks the two are unrelated. They rarely are. The bowel and bladder connection is one of the most overlooked pieces of the continence puzzle, and constipation sits right at the centre of it.
The two organs share the same small space in your pelvis. They are held by the same group of muscles. When one is under strain, the other usually feels it. Sorting out a sluggish bowel is one of the simplest things many people can do to improve bladder control, and it costs nothing to try.
This is general information, not medical advice. If your symptoms are new, sudden, or getting worse, see your GP.
How a full bowel affects the bladder
Your bladder and bowel sit next to each other behind the pubic bone. When the bowel is loaded with hard stool, it physically presses on the bladder from behind. That pressure reduces how much the bladder can comfortably hold, so you feel the urge to go sooner and more often. It can also stop the bladder emptying fully, which leaves you back at the toilet not long after.
There is a muscle angle too. Straining to pass a hard stool puts repeated downward force on the pelvic floor, the sling of muscle that supports both the bladder and the bowel. Over time that strain weakens the support, and a weaker pelvic floor is less able to hold back urine when you cough, laugh, or feel a sudden urge. So constipation can feed both the urgency type and the leak-on-effort type of bladder trouble.
The short answer: a loaded bowel crowds the bladder and tires the muscles that keep you dry. Clear the constipation and you often take pressure off both.
Why the bowel and bladder connection matters for leakage
The bowel and bladder link explains a frustration a lot of people describe. They are doing the right things for their bladder, maybe even some pelvic floor work, yet the leaks are not improving. If a backed-up bowel is quietly driving the urgency, the bladder side alone will not fix it.
It works the other way as well. Some people drink less in the hope of fewer accidents, which only concentrates the urine and irritates the bladder, and the reduced fluid makes constipation worse. Two problems get tangled together. Understanding the connection is what untangles them. It also helps to know which bladder pattern you are dealing with, so it is worth reading about the different types of incontinence and the difference between stress incontinence and urge incontinence.
The conservative steps that help first
None of this starts with a product. The first-line steps for constipation are practical, and they help the bladder at the same time.
Fibre comes first. Aim to build up wholegrains, vegetables, fruit, and legumes gradually, because adding a lot at once can cause bloating. Fibre only works with enough fluid, so the two go together.
Fluid is the step people most often get wrong. Cutting back on drinks to manage the bladder backfires, because it hardens the stool and irritates the bladder lining. Most adults do well aiming for around 1.5 to 2 litres of fluid a day unless a doctor has told you otherwise.
Movement keeps the bowel moving. A daily walk, or any regular activity that suits your body, helps the gut shift things along. Add a toileting routine on top: sit at a consistent time each day, often after breakfast when the bowel is naturally most active, and use a small footstool to raise your knees above your hips. That position relaxes the right muscles and takes away the need to strain.
When to see a GP or continence nurse
Conservative steps suit most people, but some symptoms need a professional eye. See your GP if constipation is new and persistent, if you notice blood, if you have unexplained weight loss, or if there is a sudden change in your bowel habits. These are checks worth doing, not causes for alarm.
For the continence side, a GP or a continence nurse can assess what is actually driving the leaks and rule out anything that needs treatment. The free National Continence Helpline on 1800 33 00 66 is staffed by continence nurses and is a good first call if you would rather talk it through before booking an appointment. Continence Health Australia (formerly the Continence Foundation of Australia) runs the helpline and has plain-language resources as well.
Where the right product fits in
The goal is to manage the underlying issue. While you work on it, the right product protects your confidence and your clothes so you can get on with your day without the worry of an accident. That is the job a product does well: support, not cure.
For day-to-day cover during this stretch, many people find Comfort First pull-up pants sit comfortably and stay discreet under normal clothing. Getting the fit right matters more than the absorbency number, and sizing is by waist measurement, so it is worth measuring before you choose. If you would like to test the fit before committing, our free trial lets you try before you buy.
Most of all, do not treat this as something you simply have to live with. The bowel and bladder connection is real, the steps to improve it are straightforward, and help is a phone call away. For more on living confidently day to day, the Living Well with Incontinence hub pulls the rest of it together.