Primary Causes and Risk Factors for Acid Reflux
How Acid Reflux Develops
Acid reflux occurs when the lower oesophageal sphincter (LES), a ring of muscle at the bottom of the oesophagus, fails to close properly or opens inappropriately. This allows stomach acid and partially digested food to flow backward into the oesophagus, causing the characteristic burning sensation known as heartburn. The oesophagus lacks the protective lining found in the stomach, making it vulnerable to acid damage.
Common Dietary Triggers
Certain foods and beverages are well-known triggers for acid reflux symptoms. Fatty and fried foods can slow gastric emptying, increasing pressure in the stomach. Spicy foods containing capsaicin may irritate the oesophagus directly. Citrus fruits and tomatoes are highly acidic and can worsen symptoms. Chocolate contains compounds that may relax the LES, whilst caffeine and alcohol can increase acid production and reduce sphincter pressure. Carbonated beverages create additional pressure in the stomach through gas expansion.
Lifestyle and Physical Factors
Excess body weight increases abdominal pressure, pushing stomach contents upward against the LES. This is why weight management often forms part of acid reflux treatment plans. Smoking weakens the LES and reduces saliva production, which normally helps neutralise acid. Large meals create increased stomach pressure, particularly problematic when consumed close to bedtime when lying flat reduces gravity's assistance in keeping stomach contents down.
Medical Conditions Contributing to Acid Reflux
Hiatal hernia, where part of the stomach pushes through the diaphragm, disrupts normal LES function and is strongly associated with acid reflux. Gastroparesis, or delayed stomach emptying, increases the likelihood of acid reflux by prolonging stomach distention. Pregnancy can trigger acid reflux due to hormonal changes affecting LES function and physical pressure from the growing foetus. Some connective tissue disorders like scleroderma can affect oesophageal motility.
Medication-Related Causes
Several medications can contribute to acid reflux by affecting LES pressure or increasing acid production. Non-steroidal anti-inflammatory drugs (NSAIDs) can irritate the stomach lining and increase acid production. Certain blood pressure medications, particularly calcium channel blockers, may relax the LES. Some antibiotics and osteoporosis medications can also trigger or worsen symptoms.
Treatment Options Available
Understanding the causes of acid reflux helps guide appropriate treatment selection. Proton pump inhibitors like omeprazole work by reducing stomach acid production, providing effective symptom relief for many patients. EverydayMeds offers several treatment options including omeprazole 20mg capsules, which are among the most prescribed medications for acid reflux management. Alternative treatments include lansoprazole and pantoprazole for patients who may not respond optimally to omeprazole. H2 blockers like famotidine provide another treatment option, particularly for milder symptoms or as add-on therapy.
