Does Caffeine Relax the Lower Esophageal Sphincter? Uncovering the Science Behind Heartburn Risk
Understanding the Lower Esophageal Sphincter (LES) The lower esophageal sphincter (LES) is a circular band of muscle located at the junction between the esophagus and the stomach. Its primary function is to act as a one-way valve—opening to allow food and liquids into the stomach and then quickly closing to prevent stomach contents, including acid … Read more