Part 1: Could Your Gut Be Keeping Your Pain Switched On? Gut Health, Inflammation and Chronic Pain

Inflammation and Chronic Pain

Hello health fans. I have a question for you.

Do you have gut issues and joint pain, stiffness, tendon problems, back pain or inflammatory flare-ups?

Over the last few weeks, we have been talking a lot about pain. We have looked at how pain is not always just about “damage”. We have talked about how nerves can become sensitised, how inflammation can keep tissues irritated, and how recovery often needs a combination of good treatment, movement, loading, nutrition, sleep and stress control.

But there is one area we have not spoken about enough yet.

Your Gut

There is now a growing body of research showing that the gut can influence inflammation, immune activity, nervous system sensitivity and even how the body experiences pain. Reviews now describe the gut microbiome as an important player in the relationship between chronic pain, immune signalling and inflammation. ([PMC][1])

In other words, if you are struggling with ongoing aches, stiffness, tendon problems, joint pain, back pain, fibromyalgia-type symptoms, inflammatory flare-ups or slow healing, your digestive system may be part of the picture.

Not always the whole picture.

At The Perrymount Clinic, we always want to be holistic. We do not believe that one approach fixes everything for everyone. Your pain may still need hands-on treatment, osteopathy, massage, rehab, strengthening, better sleep, stress support or medical investigation.

But sometimes, gut health is a very important piece of the puzzle.

Your Gut Is More Than a Digestive Tube

Most people think of the gut as a digestion system.

Food goes in. Nutrients are absorbed. Waste comes out.

Simple.

Except it is far more sophisticated than that.

Your gut is also home to a huge immune network. The gut-associated lymphoid tissue, often called GALT, is a major part of the body’s immune defence and plays an important role in regulating immune responses at the gut lining. ([ScienceDirect][2])

Your gut also contains trillions of bacteria, fungi, viruses and other microorganisms collectively known as the gut microbiome.

When this system is balanced, it helps with:

✅ Digesting food properly
✅ Defending against unwanted microbes
✅ Absorbing nutrients
✅ Producing short-chain fatty acids, such as butyrate, which help regulate inflammation
✅ Supporting the gut lining
✅ Training the immune system
✅ Communicating with the nervous system
✅ Helping regulate inflammatory responses throughout the body

But when this system becomes irritated, inflamed or imbalanced, the effects may not stay in the digestive system.

They can ripple out into the rest of the body.

And that matters when we are talking about pain.

How Can Gut Health Affect Physical Pain?

Pain often has an inflammatory component.

If you sprain a ligament, irritate a tendon, aggravate an arthritic joint or overload your lower back, the immune system sends inflammatory chemicals into the area to start repair.

That is normal.

Inflammation is not “bad”. It is part of healing. Pain also tells you to be careful.

The problem comes when the body becomes generally more inflamed than it needs to be.

You may not feel “ill” in the obvious sense. But your body may still be carrying more inflammatory signalling than is helpful. This can make pain feel louder. It can make joints, muscles and tendons feel more reactive. It may also slow recovery because the body is trying to heal in a more irritated internal environment.

Researchers are increasingly interested in the way the microbiome may influence chronic pain through immune, inflammatory, neurological and endocrine pathways. ([ScienceDirect][3])

So, if you have a sore knee, painful back or grumbling tendon, the problem may not be “just the gut”.

But the gut may influence the environment those tissues are trying to heal in.

Stress, the Gut and Inflammation

Stress is another important part of this picture.

Research shows that stress can alter the gut microbiome, affect gut barrier function and increase inflammatory signalling. A 2023 animal study found that repeated social stress was associated with gut dysbiosis, altered gut barrier function and a more pro-inflammatory gut environment. ([PMC][4])

A 2024 review also discussed how stress, intestinal permeability and inflammation may be linked, especially through the gut-immune-brain axis. ([PMC][5])

This is important because it shows that the gut, immune system, stress system and inflammation are not separate departments.

They constantly talk to each other.

So, when someone is stressed, sleeping badly, drinking too much caffeine, eating quickly, living on ultra-processed food and constantly rushing around, it is not surprising that digestion can suffer.

And when digestion suffers, inflammation and pain sensitivity may become harder to calm down.

Final Thought

Pain is rarely just one thing.

It can involve tissues, joints, muscles, nerves, inflammation, stress, sleep, movement, emotions, nutrition and digestion.

So, could your gut be keeping your pain switched on?

For some people, yes — it may be one of the missing pieces.

And when we support the gut, calm inflammation, improve digestion and help the nervous system settle, the body often has a much better chance of healing.

I hope you found this interesting, and we hope to see you in clinic soon.

References

1. Manske S. et al. The Microbiome’s Role in Chronic Pain and Inflammation. 2024. ([PMC][1])

2. Liu L. et al. Gut microbiota in chronic pain: Novel insights into mechanisms and therapeutic strategies. 2023. ([ScienceDirect][3])

3. Yadav S.K. et al. Repeated Social Defeat Stress Induces an Inflammatory Gut Milieu. 2023. ([PMC][4])

4. Madison A.A. et al. Stressed to the Core: Inflammation and Intestinal Permeability. 2023. ([PMC][5])

[1]: https://pmc.ncbi.nlm.nih.gov/articles/PMC11441585/?utm_source=chatgpt.com "The Microbiome's Role in Chronic Pain and Inflammation - PMC"

[2]: https://www.sciencedirect.com/science/article/pii/S1933021922001799?utm_source=chatgpt.com "Human gut-associated lymphoid tissues (GALT)"

[3]: https://www.sciencedirect.com/science/article/abs/pii/S1567576923000085?utm_source=chatgpt.com "Gut microbiota in chronic pain: Novel insights into ..."

[4]: https://pmc.ncbi.nlm.nih.gov/articles/PMC10593959/?utm_source=chatgpt.com "Repeated Social Defeat Stress Induces an Inflammatory Gut ..."

[5]: https://pmc.ncbi.nlm.nih.gov/articles/PMC10867428/?utm_source=chatgpt.com "Stressed to the Core: Inflammation and Intestinal Permeability ..."