How Exactly Does Breathing Affect Inflammation?

Written by Angie Saunders

How exactly does breathing affect inflammation?

If you have ever looked into reducing inflammation in your body, you have probably been told to focus on food, sleep, and stress.

The typical recommendation is to eat clean, reduce sugar, get more rest, and manage stress better. And all of that matters.

But there is a piece of this equation that hardly anyone in the wellness world talks about. And when you understand it, it changes how you think about inflammation entirely.

Your body already has an inbuilt system for keeping balance so that inflammation is managed before it becomes a problem. It runs automatically. It has been doing this your entire life.

The question is whether your breathing is supporting that system or quietly working against it.

The body's acid buffering system

Every day, your body produces acids. This is completely normal. Lactic acid from movement. Sulfuric and phosphoric acids from breaking down the protein in the food you eat. These are everyday byproducts of being alive.

The body handles them through a buffering system. Bicarbonate is the primary buffer. Think of it as the body's built-in neutralizer, constantly keeping the chemistry balanced so that tissues can function properly.

This buffering system is governed by two things working together.

The kidneys regulate bicarbonate concentration.
Breathing regulates CO2 concentration.

And here is the part most people miss: CO2 is not just a waste gas.
It plays a direct role in determining your pH. When you breathe more than your body needs, you exhale more CO2 than you should. When CO2 drops, pH rises. The chemistry shifts immediately.

Together, bicarbonate and CO2 control the pH of the blood, the lymph, the cerebrospinal fluid, and the interstitial fluids that surround every cell in your body.

This is described by the Henderson-Hasselbalch equation, which Dr. Peter Litchfield teaches as the master equation of respiration:

pH = bicarbonate concentration (regulated by the kidneys) / CO2 concentration (regulated by breathing)

That equation is the foundation of acid-base regulation in the body…

And breathing governs pH before the kidneys can even respond.

The kidneys work slowly. They adjust over hours and days. Peter is explicit about this: "The kidney itself doesn't really contribute anything to this equation except over a long period of time. It really leaves your breathing to do the job."

Breathing adjusts the chemistry breath to breath, in real time.
And it goes further than that... 

Breathing actually drives what the kidneys do. If someone chronically overbreathes, CO2 drops and pH rises. The kidneys compensate by dumping bicarbonate to bring pH back down. So dysfunctional breathing depletes the very resource the kidneys are supposed to be managing.

This is why you cannot simply eat or supplement your way to balanced pH. If your breathing is chronically depleting bicarbonate faster than the kidneys can replenish it, no amount of alkaline water or clean eating will outrun respiratory chemistry.

Both sides of the equation matter. Diet matters. Kidney health matters. 

But breathing is the side that operates in real time, and it is the side that almost nobody is paying attention to.

What happens when this goes on long term

When overbreathing is a short-term event, the body compensates and moves on.

When it becomes a habit, the compensation itself becomes the problem.

Every time CO2 drops and pH rises, the kidneys release bicarbonate to restore balance. Over weeks and months of habitual overbreathing, bicarbonate stores become chronically depleted.

Peter teaches this directly. In plain language, what he describes is a cycle: the body keeps dumping its primary acid buffer to compensate for the breathing habit. Eventually there is simply not enough bicarbonate left to do the job it was designed to do.

Without adequate bicarbonate, the body cannot neutralize the everyday acids it produces. Tissues end up sitting in a more acidic environment than they should.

That is a pro-inflammatory state. Created by a breathing habit.

A constant state of stress in the body, driven by the way you breathe.

The Bohr Effect: oxygen in the blood is not the same as oxygen in the tissues

This is one of the most misunderstood pieces in the entire wellness and breathwork space.

Most people assume that if their blood oxygen is normal, their tissues are getting enough oxygen. Pulse oximeters show 98 or 99 percent and everyone assumes everything is fine.

We have come across many people who actively try to push their oxygen saturation to 100 percent, thinking that more oxygen means better health. It sounds logical. But the chemistry tells a different story.

Oxygen is carried through the body by hemoglobin, a protein inside your red blood cells that picks up oxygen in the lungs and transports it to every tissue in the body.

But hemoglobin does not just release oxygen everywhere it goes. It releases oxygen based on the chemistry of the environment it is passing through. Specifically, it responds to CO2 concentration and pH.

When CO2 is at healthy levels, hemoglobin releases oxygen efficiently into tissues.

When CO2 is low, hemoglobin holds on. It grips the oxygen more tightly and will not release it properly.

This is the Bohr Effect.

So someone can have perfectly oxygenated blood, even 99 or 100 percent saturation, and still have tissues that are starving for oxygen. The oxygen is there. It just cannot get delivered.

This is why chasing higher oxygen saturation can actually work against you. If the breathing habit that is pushing saturation up is also dropping CO2, the result is more oxygen in the blood and less oxygen reaching the tissues. The numbers look great. The body is struggling.

It is a perfect storm.

Dysfunctional breathing.
Higher oxygen levels in the blood but less CO2.
Less oxygen reaching the tissues.
More acid build-up.
Less of a buffer.
More inflammation.

Layer upon layer, all driven by a dysfunctional breathing habit.

How a breathing habit lowers your body's ability to fight oxidative stress

When CO2 is chronically low, a condition called hypocapnia, the effects go beyond pH and oxygen delivery.

Hypocapnia is simply a CO2 deficit caused by habitual overbreathing. And one of its documented effects is a reduction in the body's own antioxidant capacity.

When antioxidant capacity is reduced, the body has less ability to neutralize oxidative stress. And oxidative stress is one of the primary upstream drivers of inflammation.

This is not about eating more blueberries. This is about the body's own internal antioxidant system being reduced by a dysfunctional breathing habit.

Nitric oxide: the body's anti-inflammatory signal

Nitric oxide is one of the most important molecules in the body for managing inflammation.

It is a vasodilator, meaning it relaxes and opens blood vessels, improving blood flow to tissues. It is also a key anti-inflammatory signal.

You have probably seen the wellness strategies around nitric oxide. Beetroot juice. Beetroot powder in smoothies. L-arginine and L-citrulline supplements. Nasal breathing exercises. Leafy greens. All positioned as ways to boost nitric oxide production and improve circulation.

And some of these do support nitric oxide production. That is real.

But here is what is rarely part of the conversation.

Nitric oxide is directly affected by your breathing chemistry. And if your breathing is dysfunctional, it can undermine nitric oxide availability regardless of what you are eating or supplementing.

There are two pathways…

Hemoglobin carries nitric oxide alongside oxygen. When CO2 is low and hemoglobin is holding onto oxygen too tightly (the Bohr Effect), it is also holding onto nitric oxide. Less of it reaches the tissues that need it.

The lining of the blood vessels also produces its own nitric oxide. When pH is elevated because of overbreathing, that production is inhibited. Blood vessels constrict. Blood flow drops. Less blood reaches the tissues.

So someone can be drinking beetroot juice every morning, taking supplements, breathing through their nose, and still have compromised nitric oxide delivery because their underlying breathing habit is keeping CO2 too low.

The supplements support production. But the breathing chemistry determines delivery.

Less nitric oxide reaching the tissues means more vascular tension, less blood flow, less anti-inflammatory signaling, and reduced blood flow to the organs responsible for clearing inflammation, including the liver and kidneys.

What this looked like for one of our clients

Annmarie came to us with 30 years of chronic pain. A car accident at 17. Neck and back pain she never fully recovered from. Daily gut pain for over 20 years. Headaches. Stiffness. Sciatic pain. Brain fog. Fatigue.

A 6 or 7 out of 10 on the pain scale. Every day. For decades.

She had tried everything. Physiotherapy. Chiropractic. Naturopaths. Supplements. Clinical Pilates. Reiki. Energetic development. Spinal flow. All of it helped to some degree. Nothing fully resolved what was going on.

When you understand the science above, her story starts to make sense in a different way.

Chronic pain had taught her body to control her breath. Bracing. Holding. Managing her breathing as a way of managing the discomfort. That pattern had been running for 30 years without her knowing.

Thirty years of a breathing habit that was shifting her chemistry with every breath. Depleting her buffering reserves. Impairing oxygen delivery. Reducing blood flow to the very organs responsible for clearing inflammation and managing her gut health.

She had gut pain every day for 20 years. Changed her diet. Tried every protocol. And the whole time, a breathing habit was quietly working against everything she was doing.

She didn't come to us for pain. She came for her nervous system. She had shingles three times in ten months.

So she started a daily breathing practice. Twenty minutes to an hour, every morning.

Annmarie attributes the change to one thing above everything else: the practice of raising her CO2 levels. In her words, "I did a lot of CO2 tolerance work and that's my favorite. I think that's helped probably the most out of everything."

About four months in, she woke up one morning and got out of bed without groaning. Then the next day. And the next. Her gut settled. Her stiffness relaxed. The pain that had been a constant for 30 years was quietly dissolving.

And then there was the moment with her husband. He tackled her playfully, the way he always did. For the first time in years, instead of tensing up and saying "don't, you'll hurt my back," she wrestled back. She was laughing. She was playful. Playing with her kids without bracing in pain.

She said it was a small thing. But it changed everything.

She started paying attention to how she was breathing. And her body did the rest.

Why this matters more than most people realize

Most conversations about inflammation stop at lifestyle choices. Food, sleep, and stress.

Underneath all of that, there is a respiratory chemistry that underpins everything. It runs unconsciously. It runs 24 hours a day. And it shifts breath to breath.

That is how important respiration is.

When breathing is unconsciously dysfunctional, the buffering system gets depleted. Oxygen stays in the blood but cannot reach the tissues. The body's antioxidant capacity drops. Nitric oxide delivery is compromised. Blood flow to the organs that clear inflammation is reduced.

A pro-inflammatory environment, running quietly underneath everything, driven by a habit most people have never even been told to look at.

Someone can be doing everything right on the surface and still be working against their own body chemistry with every breath.

How you breathe is the fastest lever your body has when it comes to managing inflammation. And it is the one that almost nobody is paying attention to.

The body already has the system to keep inflammation in balance. It starts with understanding how your breathing is affecting it.