
Why the Lower Oesophageal Sphincter (LOS) Becomes Inefficient: An In-Depth Look at GORD
One of the key factors in gastro-oesophageal reflux disease (GORD) is the malfunctioning of the lower oesophageal sphincter (LOS), the muscular valve that separates the stomach from the oesophagus. When functioning properly, the LOS opens to allow food into the stomach and closes to prevent stomach contents from refluxing into the oesophagus. However, when the LOS becomes weak or relaxes inappropriately, acid reflux occurs.
The inefficiency of the LOS isn’t just random. Two primary underlying causes: vitamin deficiencies and low stomach acid levels — both of which are often overlooked in conventional medicine.
1. Vitamin D Deficiency and Muscle Function
Vitamin D plays a critical role in muscle contraction and nerve function. The LOS, being a ring of muscle, relies on adequate vitamin D levels to maintain its tone and proper function. Without sufficient vitamin D, the sphincter can become weak, allowing stomach acid to leak upward into the oesophagus.
Many people with chronic acid reflux are deficient in vitamin D, often due to inadequate dietary intake, or poor absorption, limited sun exposure with the mainstream narrative being to slather yourself in chemical ladened sunblockers, wearing sunglassers inducing fear of the amazing sun theres no surprise that over half of the population has insufficient vitamin D levels and it is also worth mentioning that the ranges they recommend are below what is actually needed. This deficiency doesn’t just affect the LOS; it also impairs overall muscular and immune function. Addressing this deficiency through supplementation and sun exposure can support sphincter strength and reduce reflux episodes.
2. The Surprising Role of Low Stomach Acid (Hypochlorhydria)
Contrary to popular belief, GORD is very rarely caused by too much stomach acid most practitioners and professionals have never come accross a patient with too much stomach acid. In fact, low stomach acid is the culprit. Here’s how it works:
Inadequate acid levels slow digestion: When stomach acid is low, food sits in the stomach longer than it should. This leads to fermentation and the production of gas, which increases pressure in the stomach.
Increased pressure forces the LOS to open: The build-up of gas and pressure pushes against the LOS, causing it to open and allowing acid to reflux into the oesophagus.
Poor acid levels disrupt the LOS closing signal: Normally, adequate stomach acid triggers a signal for the LOS to close tightly. Without that signal, the sphincter remains loose and inefficient.
Contributing factors to low stomach acid include chronic stress, aging, certain medications (like proton pump inhibitors). It’s ironic that proton pump inhibitors (PPIs)—one of the most commonly prescribed medications for acid reflux—are handed out like sweets, considering they can actually worsen the root cause by further lowering stomach acid and perpetuating the cycle of reflux.
The Dangers of Proton Pump Inhibitors (PPIs)
While PPIs are commonly used to suppress stomach acid and relieve heartburn symptoms, their long-term use is linked to a range of serious health issues, including:
Nutrient deficiencies: PPIs can impair the absorption of vital nutrients like magnesium, calcium, and vitamin B12, increasing the risk of osteoporosis, fractures, and neurological issues.
Increased risk of infections: Lower stomach acid reduces the body’s natural defence against harmful bacteria, leading to higher susceptibility to infections like Clostridium difficile and pneumonia. Bacteria we ingest is eliminated by stomach acid.
Kidney damage: Studies have linked prolonged PPI use to an elevated risk of chronic kidney disease and kidney failure.
Dementia risk: Evidence shows the association between PPI use and cognitive decline.
Rebound acid hypersecretion: Discontinuing PPIs after extended use can lead to a significant increase in acid production, making symptoms worse than before starting the medication.
Despite these risks, PPIs are often prescribed as a long-term solution without addressing the underlying cause of acid reflux, leaving patients dependent on medication that can ultimately do more harm than good.
Additional Factors Impacting LOS Efficiency
Other contributors to LOS dysfunction include:
Obesity: Excess weight, especially around the abdomen, increases intra-abdominal pressure.
Smoking and Alcohol: Both can weaken the LOS muscle.
Certain Medications: Calcium channel blockers, antihistamines, and sedatives can relax the sphincter.
Dietary Triggers: Processed foods, carbonated drinks, and poor quality meals can exacerbate symptoms.
Natural Alternatives to Support LOS Function

Addressing the root causes of LOS dysfunction rather than just suppressing symptoms:
Increase stomach acid naturally: Apple cider vinegar or betaine HCl supplements (under guidance) can aid digestion.
Restore vitamin D levels: Through safe sun exposure, vitamin D3 supplements, and nutrient-rich foods like wild caught salmon.
Adopt mindful eating habits: Chew thoroughly, avoid overeating, and stay upright after meals.
Reduce processed foods: Focus on whole, nutrient-dense meals that support gut health.
avoiding GM foods, additives, bad fats, overheated oils, refined sugars.
Incorporate anti-inflammatory herbs: Ginger and turmeric can soothe the digestive tract.
Final Thoughts
While conventional medicine often targets acid reflux symptoms with quick-fix medications, these solutions rarely address why the problem occurs in the first place causes many side effects causing serious problems. Weakness of the lower oesophageal sphincter stems from deeper issues like vitamin deficiencies and low stomach acid, which, when properly addressed, can significantly improve symptoms without the need for long-term medication. Considering the potential dangers of PPIs—including nutrient deficiencies, increased infection risks, kidney damage, and cognitive concerns—focusing on root cause solutions is essential for lasting relief and long-term digestive health.
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