The Mediterranean diet is associated with a 47% reduction in GERD odds (OR=0.53) at the highest adherence level. Multiple complementary mechanisms contribute to symptom relief beyond simple acid suppression.
Mechanism#
Fiber as nitrite scavenger: Dietary fiber binds nitrite in the gastric lumen, reducing nitrosative stress at the gastroesophageal junction. Antioxidant protection: Polyphenols and vitamins reduce reactive oxygen species (ROS) in esophageal mucosa.
Melatonin-rich foods: Nuts, tomatoes, and olive oil contain melatonin precursors that improve lower esophageal sphincter (LES) tone and sleep quality.
Clinical Evidence#
Cross-sectional study (n=5,141) demonstrated a dose-response relationship between Mediterranean diet adherence and GERD symptom reduction, with the highest adherence tertile showing OR=0.53 for GERD.
Advantages Over PPI Monotherapy#
- Addresses upstream drivers rather than suppressing acid alone
- No risk of PPI-associated dysbiosis or rebound hypersecretion
- Additional cardiovascular and metabolic benefits
Cross-References#
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