Hiatal hernias, in the vast majority of cases, do not resolve on their own. Once the stomach has pushed upward through the opening in the diaphragm, the structural changes that allowed the hernia to form tend to persist or worsen rather than reverse. That said, the picture is more layered than a flat “no.” Small sliding hernias can seem to appear and vanish between diagnostic tests, some physical therapies show promise for symptom relief and possibly structural improvement, and there is at least one documented case of manual therapy fully resolving a hernia. Understanding why spontaneous resolution is unlikely, and what the realistic alternatives look like, matters for anyone living with this condition.
Why the Structural Damage Tends to Stay
A hiatal hernia forms when the upper part of the stomach slides through the hiatus, the natural opening in the diaphragm where the esophagus passes through. In a healthy body, a band of connective tissue called the phrenoesophageal ligament anchors the junction of the esophagus and stomach in place, keeping the stomach below the diaphragm where it belongs. When that ligament weakens and stretches, the stomach can migrate upward.
Research comparing the ligament tissue of people with hiatal hernias to that of people without them has found significantly lower levels of the collagen that gives the ligament its strength and elasticity. The composition of the ligament in hernia patients contains less total collagen, as well as reduced amounts of the specific collagen types (type I and type III) that provide structural integrity.1PubMed. Hiatal hernia and gastroesophageal reflux: Study of collagen in the phrenoesophageal ligament This degradation is not something the body easily reverses. Collagen loss in connective tissue is generally a one-way street, particularly in the context of aging. The ligament does not regenerate to its pre-hernia state on its own, which is the core biological reason hernias tend to be permanent once established.
Several factors accelerate this deterioration. A retrospective study combined with genetic analysis found that age, male sex, heavy physical labor, and existing gastroesophageal reflux disease (GERD) are all independent risk factors for developing a hiatal hernia.2PubMed Central. Risk factors associated with hiatal hernia: a retrospective study and two-sample Mendelian randomization These are largely progressive or irreversible influences. You get older, your connective tissue weakens further, and any strain on the diaphragm from physical labor or chronic coughing compounds the problem over time. This is why hiatal hernias are far more common in people over 50 and why, left to their own devices, they tend to enlarge rather than shrink.
When a Hernia Seems to Disappear Between Tests
Some people are told they have a hiatal hernia on one test and then told the hernia is gone on a follow-up exam. This can create the impression that the hernia resolved spontaneously, but the reality is usually more mundane: hiatal hernias, especially small sliding ones, are inconsistently detected by common diagnostic methods.
The most frequent type, a sliding hiatal hernia, involves the junction between the esophagus and stomach moving up and down through the hiatus. Because this junction is mobile, a hernia that measures less than about two centimeters can be visible during one exam and not another depending on the patient’s body position, breathing, swallowing, and stomach distension at the moment of the test.3PubMed Central. Approaches to the diagnosis and grading of hiatal hernia A barium swallow X-ray, an endoscopy, and a pressure-measuring test called high-resolution manometry can all return different verdicts on the same patient. Studies comparing these methods have found high disagreement between them, with each method producing a notable rate of false negatives.4PubMed Central. Preoperative diagnosis of hiatal hernia: barium swallow X‑ray, high-resolution manometry, or endoscopy?
So if you had a small hiatal hernia detected on one exam and a clean result on the next, the hernia probably did not heal. It was likely still there but not captured by the test that day. This diagnostic ambiguity is worth keeping in mind if you are monitoring a hernia over time, because a “clear” result does not necessarily mean your anatomy has returned to normal.
Managing Symptoms Without Surgery
Even though the hernia itself is unlikely to vanish, its symptoms can be managed effectively enough that many people live comfortably without surgical intervention. The most common symptom is acid reflux, and treatment focuses on reducing stomach acid and preventing it from reaching the esophagus.
Lifestyle changes are the first step. These include losing weight if needed, elevating the head of the bed by about eight inches during sleep, avoiding meals two to three hours before bedtime, and cutting back on foods and drinks that relax the lower esophageal sphincter or irritate the esophagus, such as chocolate, alcohol, caffeine, spicy foods, and carbonated drinks. When lifestyle changes alone are not enough, proton pump inhibitors (PPIs) are the standard medication. Guidelines from the American College of Gastroenterology recommend an eight-week course as the first-line drug therapy, with the dose kept as low as possible while still controlling symptoms.5PubMed Central. The management of hiatal hernia: an update on diagnosis and treatment For people who do not respond to once-daily PPIs, twice-daily dosing is an option.
This approach does not fix the hernia. It manages the acid reflux the hernia causes. For many people with small to moderate sliding hernias, that is enough. The hernia persists structurally, but it stops being a daily problem.
Breathing Exercises and Physical Therapy
One area that sits between passive management and surgery is physical therapy targeting the diaphragm. The diaphragm is a muscle, and like other muscles, it can be trained. Diaphragmatic breathing exercises, which involve slow, deep breaths that actively engage and strengthen the diaphragm, have been studied for their effects on the lower esophageal sphincter, the ring of muscle at the junction where the esophagus meets the stomach.
A comparative study found that diaphragmatic breathing significantly improved lower esophageal sphincter pressure and had a greater positive impact on quality of life than standard aerobic exercise in patients with reflux.6PubMed Central. Different Effects of Aerobic Exercise and Diaphragmatic Breathing on Lower Esophageal Sphincter Pressure and Quality of Life in Patients with Reflux: A Comparative Study Increasing sphincter pressure is meaningful because a weak sphincter is one of the main reasons stomach acid escapes upward in people with hiatal hernias. Stronger pressure at that junction means less reflux, even if the hernia itself remains.
Whether breathing exercises can actually reduce the hernia’s size is a separate and harder question to answer. The evidence so far is largely about symptom control rather than anatomical correction. Still, for someone looking for a non-pharmacological way to improve their day-to-day comfort, diaphragmatic breathing is low-risk and has some credible research behind it. It is not a cure, but it is a tool worth considering alongside other management strategies.
The One Case Report That Stands Out
There is a single documented case in the medical literature of a hiatal hernia being fully resolved without surgery, using osteopathic manipulative treatment (OMT). A patient underwent four half-hour sessions of hands-on manipulation, after which a repeat endoscopy showed no evidence of a hiatal hernia. The patient’s symptoms also resolved and did not return on follow-up visits. The authors of the report noted that, to their knowledge, this was the first case of a hiatal hernia being successfully reduced using manual therapy alone, confirmed by endoscopy before and after.7PubMed Central. Reduction and Resolution of a Hiatal Hernia Using Osteopathic Manipulative Treatment: A Case Report
This is genuinely interesting, but it needs to be understood in context. A case report describes what happened to one patient. It does not tell you how often the same technique works, whether the result would hold up in a controlled trial, or whether particular characteristics of that patient’s hernia made it unusually amenable to manual reduction. Chiropractors and osteopaths have long claimed that manual techniques can “push” a hernia back into place, and many patients report feeling better after such treatments. But feeling better (reduced symptoms) and anatomical resolution (the hernia is gone on imaging) are different things. This case report is the only published instance of the latter being confirmed by endoscopy. Until larger studies replicate the finding, it remains an isolated result rather than a reliable treatment option.
When Surgery Becomes the Right Call
Most small sliding hiatal hernias never require surgery. The combination of lifestyle modifications, medications, and possibly breathing exercises keeps symptoms manageable for the majority of people. Surgery enters the picture in specific situations, primarily when a hernia is large, when symptoms do not respond to medication, or when complications develop.
Paraesophageal hernias, the less common type where part of the stomach pushes up alongside the esophagus rather than sliding upward through the hiatus, are more likely to need surgical repair. These hernias carry a risk of the stomach becoming trapped or twisted (a condition called gastric volvulus), which is a surgical emergency. Guidelines indicate that symptomatic patients with paraesophageal hernias, especially those with obstructive symptoms or volvulus, require surgery.5PubMed Central. The management of hiatal hernia: an update on diagnosis and treatment
The standard surgical approach is a laparoscopic fundoplication, where the upper part of the stomach is wrapped around the lower esophagus to reinforce the sphincter, and the hiatus is tightened with stitches and sometimes a reinforcing mesh. The surgery is effective at relieving symptoms in most patients, but it comes with one significant caveat: recurrence.
The Recurrence Problem After Surgery
Even after a well-performed surgical repair, hiatal hernias come back at a rate that surprises most patients. Studies report anatomical recurrence rates ranging from roughly 15 to 27 percent, depending on the technique used and the length of follow-up. In one prospective study, about one in six patients had a confirmed recurrence at an average follow-up of around 20 months.8PubMed. Predictors of Hiatal Hernia Recurrence After Laparoscopic Anti-reflux Surgery with Hiatal Hernia Repair: a Prospective Database Analysis A larger study of over 860 paraesophageal hernia repairs found an anatomical recurrence rate of about 27 percent at a median follow-up of roughly three years.9Journal of Gastrointestinal Surgery. Recurrence in Paraesophageal Hernia: Patient Factors and Composite Surgical Repair in 862 Cases
Some surgical techniques fare better than others. The use of mesh reinforcement during the initial repair has been associated with significantly fewer recurrences. One study found that patients whose primary surgery included a bioabsorbable mesh had about a third the odds of recurrence compared to those who received suture closure alone.10PubMed. Hiatal hernia recurrences after laparoscopic surgery: exploring the optimal technique Other factors that increase the risk of recurrence include closing the hiatus under tension and the presence of Barrett’s esophagus.9Journal of Gastrointestinal Surgery. Recurrence in Paraesophageal Hernia: Patient Factors and Composite Surgical Repair in 862 Cases
These recurrence numbers are worth knowing because they illustrate the core challenge: the same weakened connective tissue and diaphragmatic opening that caused the hernia in the first place is still there after surgery. The surgeon can repair the anatomy, but the underlying tissue quality has not changed. This is one reason surgeons are cautious about recommending surgery for hernias that can be managed medically, and it reinforces the point that no approach, whether watchful waiting or active repair, truly makes the problem disappear for good in every patient.
Complications of Leaving a Large Hernia Alone
For small, mildly symptomatic hernias, conservative management is perfectly reasonable and often the best approach. But larger hernias that go unaddressed can lead to complications beyond typical reflux. One of the more insidious is chronic blood loss leading to iron deficiency anemia.
Cameron lesions are ulcers or erosions that develop on the folds of the stomach lining where the diaphragm presses against it. They result from a combination of mechanical friction during breathing, acid exposure, and reduced blood flow at the compression point.11Journal of Pediatric Surgery Case Reports. A large hiatal hernia with cameron ulcer presenting as refractory sever iron deficiency anemia: A case report These lesions bleed slowly and chronically, often without causing obvious symptoms like vomiting blood. Instead, the patient gradually becomes anemic. In clinical reports, Cameron lesions have been identified as the hidden cause of severe iron deficiency anemia in patients with large hiatal hernias who had no other explanation for their low iron levels.12PubMed Central. Cameron lesion with severe iron deficiency anemia and review of literature
Other potential complications of large, long-standing hernias include the stomach becoming incarcerated (stuck above the diaphragm and unable to slide back down), gastric volvulus (the stomach twisting on itself), and gradual shortening of the esophagus as chronic inflammation causes scarring and contraction. When iron deficiency anemia from Cameron lesions does not respond to iron supplementation alone, surgical repair of the hernia has been shown to effectively resolve the anemia by eliminating the source of chronic bleeding.13PubMed. Cameron lesions and iron-deficiency anemia in patients with hiatal hernia
None of this means every hiatal hernia needs urgent treatment. Many people live with small hernias for decades with nothing more than occasional heartburn. But it does mean that a “wait and see” strategy should still include periodic monitoring, especially if the hernia is on the larger side or if you develop unexplained fatigue or low iron levels.
Why Size and Type Matter More Than You Might Think
The question “can a hiatal hernia go away on its own?” does not have one answer because hiatal hernias are not one thing. A small sliding hernia measuring a centimeter or two is a fundamentally different clinical situation from a large paraesophageal hernia where half the stomach has migrated into the chest cavity.
Small sliding hernias are extremely common. Many are found incidentally during imaging or endoscopy done for other reasons, and many of these patients have no symptoms at all. For these hernias, the question of whether they “go away” is almost academic. They might be intermittently detectable, they may never cause problems, and they do not require treatment unless they produce symptoms. The functional experience for the patient is indistinguishable from not having a hernia at all.
Large hernias, and particularly paraesophageal hernias, are a different story. They are more likely to cause symptoms, more likely to progress, more likely to develop complications like Cameron lesions or volvulus, and more likely to eventually need surgical repair. For these, waiting for spontaneous resolution is not a realistic strategy. The hernia will not shrink on its own, and the risk of complications grows with time.
If you have been told you have a hiatal hernia, the single most useful piece of information for planning your approach is how large it is and what type it is. A small sliding hernia may never need more than occasional antacids and sleeping with your head elevated. A large paraesophageal hernia may warrant a conversation with a surgeon even before symptoms become severe, because elective repair carries lower risk than emergency surgery for a complication like volvulus.
The Role of Weight, Posture, and Intra-Abdominal Pressure
One area where people have genuine agency over the trajectory of their hernia is managing the forces that push the stomach upward. Anything that increases pressure inside the abdomen can worsen a hiatal hernia or increase symptoms. Excess body weight is one of the most modifiable of these factors. Fat deposited around the midsection pushes upward on the stomach and diaphragm, increasing the mechanical force driving the hernia. Weight loss reduces this pressure and is consistently recommended as a first-line intervention for symptomatic hiatal hernias.
Heavy physical labor has been identified as an independent risk factor for developing hiatal hernias in the first place.2PubMed Central. Risk factors associated with hiatal hernia: a retrospective study and two-sample Mendelian randomization Activities that involve straining, heavy lifting, or bearing down increase intra-abdominal pressure acutely, and doing so repeatedly over years contributes to the progressive weakening of the hiatus. This does not mean you need to stop exercising. It means that if you have a known hiatal hernia, being mindful of how you lift and choosing exercises that do not involve intense abdominal straining is worth the effort.
Chronic coughing, chronic constipation, and even tight clothing around the waist all contribute to the same upward pressure on the stomach. Addressing these individually will not make the hernia disappear, but collectively, reducing the forces that aggravate it can slow its progression and meaningfully reduce symptoms. Combined with diaphragmatic breathing exercises and appropriate medication, this kind of comprehensive management is what allows many people to live well with a hiatal hernia indefinitely, even though the hernia itself never technically goes away.