Browse: Home / Food / The fix for constipation is to go on a low fibre diet

Menu

Skip to content
  • About
  • Better Body Chemistry School
  • Book a health conversation
  • Speaking query
  • The “Big” Spoons
Header image

BBC

Small things can make a big difference to your health

advertisement

Menu

Skip to content
  • Home
  • Free Resources
    • 31 days to Better Body Chemistry
    • Willpower Report
    • Weight loss e-course
    • The ups and downs of insulin resistance
    • Candy Floss Boards
    • Weight tracker
  • Library
  • Shop
  • Baobab Adventures
  • Lucky dip
  • Buy me a coffee
  • Video gallery
  • Contact

The fix for constipation is to go on a low fibre diet

Posted by Dr Sandy on in Food | 22524 Views | Leave a response

Watch on YouTube

Click to listen to the audio…

The solution for constipation is LOW fibre

high fibre poop getting stuck

A high fibre diet makes constipation worse, not better, because the fibre bulk up the stool and more stool can’t slip out, it’s TOO BIG

Eat more fibre…….

For years we’ve been told, dietary fibre is an important part of a healthy diet and if you’re blocked up – the solution is to EAT MORE FIBRE.

Since straining to poop, accompanied by abdominal bloating and pain, is one of your health problems, you load up your trolley with high fibre items, this includes

  • whole wheat bread,
  • whole grain cereal
  • bran muffins and
  • digestive biscuits

When high fibre is NOT enough

When this high fibre diet, let’s you down and it does on a regular basis – you take a specially formulated  fibre supplement.

Let’s be honest – your high fibre is not the perfect solution.

Actually, it might not be the solution at all.

This is what a team of Singapore researchers found, when instead of prescribing MORE fibre to a group of constipated patients, they prescribed LESS.  A lot less.   When the patients followed this rather contrarian advice,  bowel movements happened.

Making bowel movements happen

In fact, they went from making a poop, once every 3.75 days, to once a day poopers.

And as they became more regular, all the pesky problems, such as

  • Anal bleeding
  • Strain in bowel opening
  • Abdominal pain
  • Bloating

VANISHED.

Who did it work for ?

Mindful that constipation can be a sign of BIGGER TROUBLES, the team were very cautious in giving the GO LOW FIBRE diet recommendation.

People with idiopathic constipation, visiting the Seow-Choen Colorectal Surgery in Singapore, between May 2008 and May 2010 were screened for colon and/or thyroid problems.  Colon screening was done through colonoscopy.

NOTE :  Low thyroid levels are often the cause of constipation.

Only people whose colon’s and thyroid’s had been given a clean bill of health,  were included in the study.   63 people made the cut…..16 males and 47 females.   The patients ranged in age from 20 – 80 years, but most of them were middle aged, the median age being 47 years.

Going low fibre

All of the patients were following the “standard” dietary advice – they were eating LOTS of fibre and/or taking fibre supplements.

The team gave a quick biology lesson on the ins-and-outs of fibre and then advised the patients to exclude ALL fibre from their diet for 2 weeks and then to continue with as little fibre as they were comfortable with, long term.

Long-term was 6 months.

Constipation cured

Armed with poop diaries, the team check up on what had happened at the 6 month mark.

At the 6 month mark…………those that followed the advice – were cured.

Those that didn’t, and there were quite a few, weren’t.

But fibre is supposed to help constipation !

The fibre myth

Fibre will make MORE poop.

But constipation is not happening because there is a shortage of POOP.   It is happening because the POOP in the rectum, is not moving through.

Now to move out, POOP has to slide through the anal sphincter.

Sphincter  ?   This is a biological term to describe a VERY NARROW passage.   You have quite a few sphincters dotted around your body, including this one, which marks the end of the gut.

It is NARROW

Now when something is NARROW – what is going to pass through ?  Something small and thin or something big and fat ?

Small and thin.  Dah !

Mmmm…………….. but if you’re eating LOTS of fibre, specifically insoluble fibre, you’re BULKING up the stool i.e. making it BIGGER.

So you’re trying to move something BIGGER, through a small hole.

Ouch !

STRAINING.  PAIN. BLEEDING.

These are the symptoms of CONSTIPATION.

You’re not fixing the problem, you’re making it worse !

What were the health gurus  thinking ?

It makes the STOOL wetter

And wet stools are more pliable and so they’re more able to “slide” through.

Wrong !

The wetness of a stool is not determined by the amount of water you drink or the amount of fibre you consume.  It is dictated by physiology ! It’s typical set to 70-75 % water.

It is impacted by gut transit time.

And if your POOP,  get’s stuck at the sphincter – it’s going to be there for a lot longer !

Oh dear !

Try a low fibre diet

It works………………

After all, if there is a traffic jam, would you send in more cars ?  I don’t think so.  You’d be doing your best, to decrease the numbers cars involved.

Going on a low fibre diet, will decrease congestion, so go on give it  a try for a few weeks, you have NOTHING to lose.

NOTE :

The fibre you want to limit, is insoluble fibre – otherwise known as roughage.   Think bran,  whole grain cereals,  wholewheat “whatever”, brown “whatever”.  Keep the soluble fibre, the fibre that comes with vegetables and fruit.  This fibre won’t bulk up the stool and  vegetables and fruits, do more than just provide fibre. 


Stopping or reducing dietary fiber intake reduces constipation and its associated symptoms.  World J Gastroenterol (2012)  18(33): 4593-4596.  Kok-Sun Ho, Charmaine You Mei Tan, Muhd Ashik Mohd Daud, Francis Seow-Choen.  

Further reading

fat rat cookbook

A high fat diet can make you fat, but the fat is not the reason

If you want to make a mouse fat, just feed it MORE FAT. But fat is now not supposed to make you fat, so what gives ? These high fat diets are missing something

gut bacteria pinning granny smith apple

An apple a day only keeps the doctor away, if it’s a Granny Smith Apple

Granny Smith apples contain lots of UNDIGESTIBLE BITS, and it is the UNDIGESTIBLE BITS that matter, they encourage “skinny” bacteria to move into your colon

bacteria choosing their path

Plane trips are safe for your gut flora, loo trips aren’t

Exactly who is living in your gut matters, that said, who shows up, doesn’t change much from day to day UNLESS you take somekind of trip…

 

Want to discover more ways to create BETTER BODY CHEMISTRY ?

 

Posted in Food | Tagged anal sphincter, constipation, fibre, gut, high fibre, low fibre, poop, stool, whole grain

Instagram

betterbodychemistry
@betterbodychemistry
Follow
LOW cholesterol isn’t automatically safe.

That’s the curveball.

We focus so hard on lowering LDL…
we forget it’s doing a job.

And midlife is when these conversations start showing up —
cholesterol, statins, shifting risk.

If this is on your radar…
there’s a free Navigating the Middle Years bundle open right now.

50+ resources on midlife health, hormones and what’s actually going on.

⏳ Closes tomorrow

Hop inside, you'll find the link in bio.

#midlifehealth #menopausehealth #womenshealthover40
#cholesterol #statins #ldl #hearthealth
#metabolichealth #biologymatters
betterbodychemistry
betterbodychemistry
•
Follow
LOW cholesterol isn’t automatically safe. That’s the curveball. We focus so hard on lowering LDL… we forget it’s doing a job. And midlife is when these conversations start showing up — cholesterol, statins, shifting risk. If this is on your radar… there’s a free Navigating the Middle Years bundle open right now. 50+ resources on midlife health, hormones and what’s actually going on. ⏳ Closes tomorrow Hop inside, you'll find the link in bio. #midlifehealth #menopausehealth #womenshealthover40 #cholesterol #statins #ldl #hearthealth #metabolichealth #biologymatters
2 months ago
View on Instagram |
1/9
You know that phase where things just feel a bit… off? 👀 Like what used to work for your body and health just doesn’t anymore, but you’re not totally sure what to do about it? Yeah. That one.

I am so excited to announce that my workshop, Cholesterol Curveball: What Women Need to Know, is officially part of the Navigating The Middle Years Bundle! If you've been feeling confused or overwhelmed by your changing cholesterol numbers during midlife, I created this specifically to give you practical, no-fluff answers.

Even better, I’ve teamed up with a group of amazing creators to include my workshop alongside 50+ other resources designed exactly for this stage of life. The bundle covers: ✨ energy + health (including my cholesterol workshop!) ✨ confidence + boundaries ✨ “what now?” clarity ✨ practical next steps

🎁 It’s completely free (for a limited time).

Head to the link in my bio to grab your free copy before it's gone!

#CholesterolManagement
#WomensHeartHealth
#HighCholesterol
#MenopauseHealth
#PerimenopauseHealth
#MidlifeWomen
#NavigatingMidlife
#WellnessJourney
betterbodychemistry
betterbodychemistry
•
Follow
You know that phase where things just feel a bit… off? 👀 Like what used to work for your body and health just doesn’t anymore, but you’re not totally sure what to do about it? Yeah. That one. I am so excited to announce that my workshop, Cholesterol Curveball: What Women Need to Know, is officially part of the Navigating The Middle Years Bundle! If you've been feeling confused or overwhelmed by your changing cholesterol numbers during midlife, I created this specifically to give you practical, no-fluff answers. Even better, I’ve teamed up with a group of amazing creators to include my workshop alongside 50+ other resources designed exactly for this stage of life. The bundle covers: ✨ energy + health (including my cholesterol workshop!) ✨ confidence + boundaries ✨ “what now?” clarity ✨ practical next steps 🎁 It’s completely free (for a limited time). Head to the link in my bio to grab your free copy before it's gone! #CholesterolManagement #WomensHeartHealth #HighCholesterol #MenopauseHealth #PerimenopauseHealth #MidlifeWomen #NavigatingMidlife #WellnessJourney
2 months ago
View on Instagram |
2/9
There is still time to catch my session and tune into all the other amazing presentations happening inside the Bloom & Be Summit. 

Its a free virtual Self-Care Experience for anyone who wants growth, joy, and intentional living…but doesn’t resonate with hustle culture or rigid routines. 

This experience is about small, meaningful shifts that expand your capacity…not overwhelm it.

NOTE : You don’t have to watch everything. You don’t have to change everything. You’re allowed to move gently.

If you’re ready for self-care that meets you where you are, Bloom + Be might be exactly what you need.

Join us March 24–26 (🔗in-bio)

#BloomAndBeSummit #SweetDreams #NightRoutine #BedtimeRitual #SelfCareSummit #RestfulSleep #GentleLiving #FireflyKisses #WindDown #DeepSleep
betterbodychemistry
betterbodychemistry
•
Follow
There is still time to catch my session and tune into all the other amazing presentations happening inside the Bloom & Be Summit. Its a free virtual Self-Care Experience for anyone who wants growth, joy, and intentional living…but doesn’t resonate with hustle culture or rigid routines. This experience is about small, meaningful shifts that expand your capacity…not overwhelm it. NOTE : You don’t have to watch everything. You don’t have to change everything. You’re allowed to move gently. If you’re ready for self-care that meets you where you are, Bloom + Be might be exactly what you need. Join us March 24–26 (🔗in-bio) #BloomAndBeSummit #SweetDreams #NightRoutine #BedtimeRitual #SelfCareSummit #RestfulSleep #GentleLiving #FireflyKisses #WindDown #DeepSleep
2 months ago
View on Instagram |
3/9
If you’ve been craving self-care that actually supports your real life…this is for you.

Bloom + Be: A Gentle Self-Care Experience is a free, 3-day virtual self-care event happening March 24-26, created for creative, kindhearted women who want more joy, clarity, and momentum…without hustle culture or pressure.

This isn’t about adding more to your to-do list.

It’s about caring for your mind, body, and energy in ways that help you feel lighter and more connected to yourself.

Come exactly as you are. Take what helps. Leave the rest.

Free tickets are available now (🔗in-bio)

#BloomAndBe
#BloomAndBeSummit
#SleepBetter
#FallAsleepFast
#SleepScience
#MindBodySoul
#SlowLiving
#NourishYourself
#HolisticWellness
betterbodychemistry
betterbodychemistry
•
Follow
If you’ve been craving self-care that actually supports your real life…this is for you. Bloom + Be: A Gentle Self-Care Experience is a free, 3-day virtual self-care event happening March 24-26, created for creative, kindhearted women who want more joy, clarity, and momentum…without hustle culture or pressure. This isn’t about adding more to your to-do list. It’s about caring for your mind, body, and energy in ways that help you feel lighter and more connected to yourself. Come exactly as you are. Take what helps. Leave the rest. Free tickets are available now (🔗in-bio) #BloomAndBe #BloomAndBeSummit #SleepBetter #FallAsleepFast #SleepScience #MindBodySoul #SlowLiving #NourishYourself #HolisticWellness
2 months ago
View on Instagram |
4/9
Everyone fears sugar spikes… but almost no one realises sugar crashes shake your blood vessels too.
Inside your bloodstream, stability matters more than perfection.

Agent Vaso is the quiet operator keeping your flow steady — until things drop faster than he can respond.

If you want more molecule-level stories that help you understand what’s actually happening in your body, follow along.

This is the biology no one ever teaches you.

#sugarcrash
#hypoglycemia
#bloodflow
#endothelium
#vascularhealth
#bloodvessels
#healthyflow
#glucoselevels
#glycemicvariability
#betterbodychemistry

#betterbodychemisty
betterbodychemistry
betterbodychemistry
•
Follow
Everyone fears sugar spikes… but almost no one realises sugar crashes shake your blood vessels too. Inside your bloodstream, stability matters more than perfection. Agent Vaso is the quiet operator keeping your flow steady — until things drop faster than he can respond. If you want more molecule-level stories that help you understand what’s actually happening in your body, follow along. This is the biology no one ever teaches you. #sugarcrash #hypoglycemia #bloodflow #endothelium #vascularhealth #bloodvessels #healthyflow #glucoselevels #glycemicvariability #betterbodychemistry #betterbodychemisty
4 months ago
View on Instagram |
5/9
If you enjoy understanding your chemistry instead of guessing, come hang out in my world.

👉 Follow @betterbodychemistry
👉 Join my weekly email list - you will find the link in my bio

#nocturia #nighttimepee #sleephealth #hearthealth #fluidretention #metabolichealth #insulinresistance #betterbodychemistry #scienceexplained #healthscience #overactivebladder #sleepbetter #agingwell
betterbodychemistry
betterbodychemistry
•
Follow
If you enjoy understanding your chemistry instead of guessing, come hang out in my world. 👉 Follow @betterbodychemistry 👉 Join my weekly email list - you will find the link in my bio #nocturia #nighttimepee #sleephealth #hearthealth #fluidretention #metabolichealth #insulinresistance #betterbodychemistry #scienceexplained #healthscience #overactivebladder #sleepbetter #agingwell
4 months ago
View on Instagram |
6/9
I’ve spent a long time trying to figure out how to explain what I actually do in a way that feels honest — not salesy, not dramatic, and not simplified to the point of being wrong.

What I finally landed on is something I call Unlocking Better Body Chemistry.

It’s not a program or a protocol.
It’s a way of looking at health problems — especially metabolic ones — that focuses on why things aren’t responding, instead of just chasing symptoms.

Most people I talk to are already doing a lot of “right” things.
They’re just doing them without a clear understanding of how their own body is functioning.

This framework is how I make sense of bloodwork, symptoms, and context together — and how I help people stop guessing about what actually matters.

I’ve put it all into a page so it’s clear, grounded, and easy to read.

If you’re curious, you can read it here. (link in first comment)

#signatureframework #metabolichealth #healthframework #healthwithoutthehype
betterbodychemistry
betterbodychemistry
•
Follow
I’ve spent a long time trying to figure out how to explain what I actually do in a way that feels honest — not salesy, not dramatic, and not simplified to the point of being wrong. What I finally landed on is something I call Unlocking Better Body Chemistry. It’s not a program or a protocol. It’s a way of looking at health problems — especially metabolic ones — that focuses on why things aren’t responding, instead of just chasing symptoms. Most people I talk to are already doing a lot of “right” things. They’re just doing them without a clear understanding of how their own body is functioning. This framework is how I make sense of bloodwork, symptoms, and context together — and how I help people stop guessing about what actually matters. I’ve put it all into a page so it’s clear, grounded, and easy to read. If you’re curious, you can read it here. (link in first comment) #signatureframework #metabolichealth #healthframework #healthwithoutthehype
4 months ago
View on Instagram |
7/9
If your liver folded watching this — you’re exactly who I talk to every week.

Not your standard eat less and move more advice.
Not wellness fluff.
Biochemistry.

Join the Better Body Chemistry list.
📩 Link in bio.

#fattyliver
#insulinresistance
#metabolichealth
#alcoholandhealth
#metabolicstress
#insulinresistant
#metabolichealthtips
#NAFLD
#betterbodychemistry
betterbodychemistry
betterbodychemistry
•
Follow
If your liver folded watching this — you’re exactly who I talk to every week. Not your standard eat less and move more advice. Not wellness fluff. Biochemistry. Join the Better Body Chemistry list. 📩 Link in bio. #fattyliver #insulinresistance #metabolichealth #alcoholandhealth #metabolicstress #insulinresistant #metabolichealthtips #NAFLD #betterbodychemistry
4 months ago
View on Instagram |
8/9
Your body isn’t misbehaving.
Its clocks are out of sync.

Every cell runs a molecular timekeeper — CLOCK, BMAL, PER and CRY — driving your energy, appetite, sleep pressure and mood.

When those clocks drift, everything feels “off,” and people blame willpower instead of timing.
If you want science that explains your biology (not wellness slogans), link in bio to join my email list

#circadianrhythm #molecularclock #CLOCK #BMAL #PER #CRY #circadianbiology #bodyclock #metabolism #timing #BetterBodyChemistry
betterbodychemistry
betterbodychemistry
•
Follow
Your body isn’t misbehaving. Its clocks are out of sync. Every cell runs a molecular timekeeper — CLOCK, BMAL, PER and CRY — driving your energy, appetite, sleep pressure and mood. When those clocks drift, everything feels “off,” and people blame willpower instead of timing. If you want science that explains your biology (not wellness slogans), link in bio to join my email list #circadianrhythm #molecularclock #CLOCK #BMAL #PER #CRY #circadianbiology #bodyclock #metabolism #timing #BetterBodyChemistry
5 months ago
View on Instagram |
9/9
View on Instagram
  • Popular
  • Featured
  • Recent
  • asprosin the sugar plum fairy

    Why sugar levels are high despite NOT eating

    23079 views / Posted
  • oatmeal breakfast being beaten by egg

    Which is a better breakfast, egg or oatmeal ?

    22821 views / Posted
  • poop getting stuck

    The fix for constipation is to go on a low fibre diet

    22524 views / Posted
  • chewing gum relieving postoperative ileus

    A stick of chewing gum gets the gut going after surgery

    17008 views / Posted
  • carbonated water bubbles fill you up

    Fizzing up the water flattens your appetite

    15887 views / Posted
  • sun extracting cholesterol

    Make sure you have your “annual” check-up in the summer time

    / Dr Sandy
  • sending your kid to bootcamp won't stop childhood obesity

    Moving more won’t stop your kid from getting fat

    / Dr Sandy
  • cholesterol at the scene of the accident

    Bone cells are stiffening up your arteries not cholesterol

    / Dr Sandy
  • brain size the problem in ADHD

    Are kids with ADHD just acting according to their brain age

    / Dr Sandy
  • plastering the blood vessel with calcium

    Calcium supplements are building bones and breaking hearts

    / Dr Sandy
  • Plant baring hamburgers

    Does Soy Build Muscle? Exploring the Science Behind Protein Choices

    / Dr Sandy
  • img-35

    The Dark Side of Weight Loss Drugs

    / Dr Sandy
  • Mother Nature stealing from peter to pay paul

    Are You Losing Muscle Without Realizing It? Here’s How to Protect It

    / Dr Sandy
  • img-37

    Your Resting Heart Rate could be a Red Flag for Metabolic Trouble

    / Dr Sandy
  • baby muscle mesmerized by the TV

    Tots watching too much TV end up being muscle flops

    / Dr Sandy

RSS Recent posts

 
 
 

Categories

Featured posts

  • asprosin the sugar plum fairy

    Why sugar levels are high despite NOT eating

    23079 views / Posted
  • oatmeal breakfast being beaten by egg

    Which is a better breakfast, egg or oatmeal ?

    22821 views / Posted
  • poop getting stuck

    The fix for constipation is to go on a low fibre diet

    22524 views / Posted
 

©2011-2025 Spoonful of Science

Menu

  • Meet Dr Sandy
  • Disclosure/disclaimer
  • Privacy policy
  • Comment policy
  • Contact