One factor that’s often left out of the conversation happens to be one of the most significantly misunderstood: the health of our bowels.
The relationship between constipation and bladder weakness is well established in clinical research, but it is rarely discussed in everyday bladder health advice. Once it is understood, a number of frustrating symptoms begin to make sense – and may even relieve.
How the bowel affects the bladder
The bladder and the bowel sit alongside each other in the lower abdomen, supported by the same group of muscles known as the pelvic floor. When the bowel is full or impacted, it takes up additional space and exerts pressure on the bladder. The bladder has less room to fill before signalling the need to urinate, which presents as increased frequency, urgency, and in some cases reduced warning time before a leak.
Repeated straining during bowel movements places significant load on the pelvic floor. Over time, this weakens the very muscles that support continence. Research has identified chronic constipation as a contributing factor in urinary incontinence and pelvic organ prolapse. This is particularly evident in women who have given birth, are perimenopausal or postmenopausal, due to declining oestrogen further reduces tissue resilience.
Constipation does not only press on the bladder in the moment. It can quietly undermine the structural support of the pelvic floor over months and years.
Recognising the signs
We think of constipation as days without a bowel movement, visible bloating, obvious discomfort – but the version that affects bladder health is usually subtler.
Indicators worth paying attention to include:
Bowel movements less frequent than once a day
Stools that are hard, dry, or pellet-like
A sensation of incomplete evacuation
The need to strain
Persistent fullness or pressure low in the abdomen
Bladder symptoms that ease noticeably after a bowel movement
The last point is particularly important, as it shows that the link between constipation and your bladder habits are already evident in your own body. Keeping a bladder health journal can help you identify these indicators and monitor them over time.
The role of fibre
Standard advice to alleviate constipation is to increase fibre. While correct, we need to understand how the two different types of fibre we consume behave differently.
Soluble fibre dissolves in water to form a gel-like substance that softens stools and supports regular transit. It is found in oats, pears, apples, flaxseed, chia seeds, beans, lentils, and barley.
Insoluble fibre adds bulk and accelerates movement through the digestive tract. It is found in wheat bran, the skins of fruit and vegetables, nuts, and seeds.
For most people experiencing the kind of sluggish, incomplete bowel movements associated with bladder symptoms, soluble fibre is the more useful starting point. Increasing insoluble fibre too quickly, particularly without sufficient water intake, can worsen symptoms and leave you feeling more uncomfortable.
A few practical adjustments:
Replace toast with porridge in the morning, with a tablespoon of ground flaxseed and a chopped pear stirred through.
Introduce stewed prunes a few times a week. Prunes contain both soluble fibre and sorbitol, a naturally occurring sugar alcohol with a mild laxative effect.
Build in two pulse-based meals a week: a white bean stew, a lentil soup, a chickpea-based dish.
Add two kiwi fruit per day. Clinical trials have demonstrated improvements in stool frequency and consistency from this amount, and kiwi is gentler on the bladder than other high-vitamin-C fruits.
Movement and posture
Strengthening the muscles that support both the bowel and the bladder is one of the most effective things you can do. Jude’s Strength Method goes beyond traditional Kegels by using integrated, functional movement that engages the pelvic floor as part of the wider core. Research suggests this approach can be up to 56% more effective at activating these muscles than Kegels alone.
Additionally, there are two simple things that can help pass tricky stools:
Squatting: Held for thirty seconds to a minute, a deep squat relaxes the pelvic floor and aligns the lower bowel. While sitting on the toilet, raise your feet with a small footstool that raises your knees above the hips, mimicking a deep squat position closely enough to reduce straining.
Move your body: Daily walking, yoga, and gentle abdominal mobility work all support bowel motility, which in turn reduces pressure on the bladder. Try to do one of these once a day for around 20 minutes to alleviate the impact of constipation.
When to seek further support
These adjustments address the most common form of chronic constipation, often related to the more familiar pattern of sluggish, incomplete bowel movements that many women come to accept as normal. Small and consistent changes to diet, posture, and movement can ease both bowel and bladder symptoms together.
However, these suggestions are not a substitute for medical advice. If you experience new, severe, or persistent changes in bowel habit – particularly alongside pain, bleeding, or unexplained weight loss – it’s important to speak to your GP.
