Hiatal Hernia: The “Hidden Player” Behind Reflux (and What We Can Do About It)
- Orie Quinn
- 22 hours ago
- 5 min read
If you’ve ever felt that classic burn in your chest, the sour taste creeping up your throat, or that weird pressure that makes you wonder, “Why does my stomach feel like it’s trying to live in my ribs?” — there’s a decent chance a hiatal hernia is part of the story.
the most common symptoms of a hiatal hernia,
how often it’s involved in acid reflux, and
how visceral release work (and how I use applied kinesiology as part of a functional exam) can help reduce the strain patterns that keep it irritated.
First: what a hiatal hernia actually is
A hiatal hernia happens when the top part of the stomach slides up through the diaphragm opening (the “hiatus”) into the chest area.
Most are sliding hiatal hernias (Type I) — and these are the ones most closely linked with reflux symptoms. Less commonly, there are paraesophageal hernias, which can be more serious because part of the stomach can get trapped and lose blood flow.
Symptoms: what it can feel like in real life
A lot of hiatal hernias are silent — people have them and never know. But when they’re symptomatic, here are the patterns I see most often (and the medical references line up with this):
The classic reflux cluster
Heartburn / burning behind the breastbone
Regurgitation (acid or food coming back up)
Worse after meals, bending forward, or lying down
Pressure + swallowing changes
Trouble swallowing (dysphagia)
Chest pressure or upper abdominal pressure
Epigastric discomfort (that “stuck” feeling under the sternum)
Throat + airway-style symptoms (the sneaky ones)
Chronic cough
Hoarseness / throat irritation
Asthma-like symptoms or shortness of breath (especially in larger hernias)
Less common but important
Iron deficiency anemia (sometimes from irritation/bleeding)
Red flags (don’t “wait and see” on these): persistent or worsening swallowing trouble, vomiting blood/black stools, unintentional weight loss, severe chest pain, or sudden intense upper abdominal pain (especially with known paraesophageal hernia).
How often is a hiatal hernia involved in reflux?
Here’s the honest answer: often enough that it should be on the checklist — but not so often that it’s the only explanation.
A few grounding points:
Hiatal hernias are common in the general population (often cited around ~20%, increasing with age).
Hiatal hernia and GERD are closely associated, especially with sliding hernias.
In a large endoscopy-based study, hiatal hernia showed up in about 48.7% of people scoped for GERD-related indications.
In a massive “real-world” dataset of EGDs, hiatal hernia was present in ~45% overall, and higher in groups scoped for reflux-related symptoms plus alarm features.
So practically speaking: a large chunk of people who are being worked up for reflux have a hiatal hernia — but plenty don’t. And plenty of people with a small hernia don’t have meaningful symptoms.
Why it matters mechanically
Reflux isn’t just “too much acid.” It’s often a barrier problem.
Your anti-reflux barrier is a team effort:
the lower esophageal sphincter (LES),
the diaphragm (especially the crura),
and how the stomach and esophagus are positioned and moving.
A hiatal hernia can disrupt that teamwork — the LES and diaphragm don’t “stack” as well, and reflux becomes easier to trigger.
The part people skip: the diaphragm is part of the solution
This is where I get excited, because it’s simple and it’s empowering.
There’s actually solid research support that training the diaphragm with specific breathing exercises can improve reflux symptoms and improve the pressure dynamics at the esophagogastric junction / LES.
That matters because if the diaphragm is part of the anti-reflux barrier, then helping it function better can reduce reflux load — whether or not a hernia is present.
Where visceral release work fits (and what the evidence says)
Visceral release / visceral mobilization is a gentle hands-on approach aimed at improving mobility and tension patterns around organs and their connective tissues — especially where things get restricted, tugged, or compressed.
For reflux and hiatal patterns, clinically we’re often paying attention to:
diaphragm tension and rib cage mechanics,
fascial drag around the esophageal hiatus,
stomach mobility (especially the upper stomach),
thoracic spine mechanics and abdominal pressure patterns.
What research supports right now
The research base is still developing, but there are human clinical studies showing symptom improvement in GERD after manual osteopathic visceral techniques (short-term outcomes). There are also published case reports describing improvement in hiatal hernia–related symptoms and even imaging changes after osteopathic manipulation, though case reports are not the same as large trials.
So the way I frame it is this:
Manual therapy may help by reducing the mechanical strain patterns that keep the system irritated — especially when paired with breathing, posture, meal timing, and pressure management.
Not a magic trick. Not a guarantee. But often a meaningful lever.
How applied kinesiology fits in my approach (and the responsible way to think about it)
Applied kinesiology (AK) is most known for manual muscle testing and challenge techniques. In my office, I don’t use it as a replacement for medical diagnosis (like endoscopy or imaging when indicated). I use it as a functional “priority finder” inside a full exam:
What’s the diaphragm doing under load?
Is the rib cage moving like it should?
Is there a pattern of protective guarding around the stomach/hiatus?
What happens when we change breathing, posture, or gentle pressure?
That said, it’s important to be honest: the research on AK-specific methods is mixed and controversial, and reliability varies across studies.
So here’s the balanced takeaway:
AK can be a useful clinical framework when it’s used responsibly — as part of a full assessment — but it should not be treated as a stand-alone diagnostic test for disease.
That’s how I practice it.
What a “hiatal + reflux” care plan often looks like
1) Calm the pressure system
meal sizing and timing (especially evening meals)
trunk compression habits (slouching, tight belts, constant bracing)
strategies to reduce abdominal pressure spikes
2) Restore diaphragm mechanics
targeted diaphragmatic breathing (this is not “take a deep breath”—it’s training)
3) Hands-on visceral/diaphragm work
diaphragm release and rib motion
gentle work around the epigastric region and hiatus
thoracic spine and fascial chain support
4) Re-check function, not just symptoms
This is where functional testing (including careful muscle testing as one input) helps us decide what’s actually changing in the body, not just what we hope is changing.
The simplest “try this first” if reflux is your daily thing
If you want one action that’s low-risk and high-upside:
Practice diaphragmatic breathing daily for 5–10 minutes, ideally:
before meals, and/or
in the evening before bed.
The reason is mechanical: we’re training a key part of the anti-reflux barrier.
Closing thought
When someone tells me, “I’ve tried the diet changes. I’ve tried the meds. I’m still dealing with reflux,” I don’t assume they’re failing.
I assume their body is protecting something.
Sometimes that “something” is a hiatal hernia pattern — sometimes it’s pressure management, breathing mechanics, or tissue restriction around the diaphragm.
