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Constipation: More Than Just Fibre

April 27, 2026

Constipation: More Than Just Fibre

Article

Constipation is one of the most common digestive complaints, yet it is often misunderstood, poorly defined, and inadequately addressed.

For some, it means not going every day. For others, it is years of straining, discomfort, or feeling like they have never fully emptied. The reality is, bowel regularity is not just about frequency, it is about function.

Clinically, constipation is typically defined as fewer than three bowel movements per week, often accompanied by hard stools, straining, or a sense of incomplete evacuation. But even daily bowel movements can still reflect constipation if stool quality is poor.

What is Really Causing It?

Constipation is not a standalone issue. It is often a symptom of something deeper.

Common contributors include:

  • Low fibre intake
  • Inadequate hydration
  • Poor gut motility
  • Medication use
  • Underlying health conditions

Medications are an often-overlooked driver. Common culprits include calcium or iron supplements, blood pressure medications, and increasingly, GLP-1 medications used for weight loss. These can slow the entire digestive tract.

In some cases, constipation may be linked to more complex conditions such as:

  • Thyroid dysfunction
  • Insulin resistance or diabetes
  • Neurological conditions
  • Pelvic floor dysfunction

A sudden change in bowel habits should never be ignored and warrants proper investigation. 

The Fibre Myth (and Why It Still Matters)

Fibre is often the first recommendation, but most people dramatically overestimate how much they are actually consuming.

General guidelines suggest around 25-30 grams per day, yet most people fall well short of this target.

Even foods perceived as high fibre often contribute very little. This is why simply "eating better" is not always enough.

Increasing fibre intake is one of the most well-supported strategies for improving bowel function, but it must be done correctly:

  • Start low and increase gradually
  • Spread intake across the day
  • Increase water alongside fibre

A sudden increase can worsen symptoms, leading to bloating and discomfort.

For many, a targeted fibre supplement can be a more practical and effective starting point.

Hydration: The Missing Piece

Fibre without fluid does not work.

Water is essential to soften stool and allow fibre to do its job. What one person considers "enough" fluid is often inadequate for optimal bowel function.

Personalised hydration targets, rather than generic advice, are far more effective.

It is Not Just About Food

Constipation is a whole-body issue.

Sleep, stress, movement, and daily habits all play a role in gut motility.

Simple behavioural factors can make a significant difference:

  • Ignoring the urge to go trains the body to suppress signals
  • Sitting on the toilet too long can worsen dysfunction
  • Establishing a regular routine, particularly after meals, supports natural rhythms

In some cases, the issue is not diet at all, but coordination. Pelvic floor dysfunction, where the muscles do not relax properly, can prevent effective bowel movements and requires targeted therapy.

When Diet is Not Enough

Many people cycle through different over-the-counter products without understanding how they work.

Different types of support serve different roles:

  • Fibre supplements add bulk and retain water
  • Osmotic agents draw water into the bowel (eg magnesium citrate)
  • Stimulant laxatives trigger movement

Used strategically, these can be effective, but persistent symptoms may require deeper investigation.

The Bigger Picture

Constipation is not just an inconvenience. It is often a signal that something within the system is not functioning optimally.

Rather than viewing it as a simple fibre deficiency, it should be approached as part of overall metabolic and digestive health.

When addressed properly, improvements in bowel function often come alongside:

  • Better energy
  • Reduced bloating
  • Improved metabolic regulation
  • Greater overall wellbeing

The goal is not just to "go more often" but to restore efficient, comfortable, and consistent function.

Because when the gut is working well, everything works better.