acidity? It’s basically excess stomach acid irritating the stomach lining or flowing back into the food pipe (GERD). Common symptoms • Burning in chest (heartburn) • Sour or bitter taste in mouth • Upper abdominal pain • Bloating, gas • Nausea • Feeling worse after spicy or oily food Common causes • Skipping meals / irregular eating • Spicy, oily, fried food • Tea, coffee, alcohol • Stress (very underrated cause) • Smoking • Painkillers (NSAIDs) • Lying down immediately after meals Medicines (co