Why do I get terrible acid heartburn just from drinking a glass of plain tap water?
1. Introduction Heartburn experienced after drinking plain tap water is typically caused by the sudden volume distension of a sensitive or empty stomach, which triggers the transient relaxation of the lower esophageal sphincter. When this muscular valve opens inappropriately, residual gastric acid resting at the top of the stomach contents splashes upward into the unprotected … Read more