Lower Esophageal Sphincter

Definition of Lower Esophageal Sphincter:

A band of muscle around the bottom of the esophagus where it meets the stomach.  The LES opens after a person swallows to let food enter the stomach and then immediately closes to prevent regurgitation of the stomach contents, including gastric acid.  It then maintains this pressure barrier until food is swallowed again.

Also: LES

Topics Related to Lower Esophageal Sphincter

Dyspepsia / Poor Digestion

...the condition
“...The most common causes and risk factors include ... GERD (Gastro-esophageal reflux disease), in which the lower esophageal sphincter (LES) – the muscular ring between the esophagus and the stomach – is unable to prevent stomach acid from rising up into the esophagus...”

Gastric Reflux Disease

...related topic
“...GERD develops as a result of relaxations of the transient lower esophageal sphincter.  Typical presenting symptoms are heartburn, an epigastric burning sensation and acid regurgitation...”
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More topics Related to Lower Esophageal Sphincter

Heartburn / GERD / Acid Reflux

...the condition
“...Gastro-Oesophageal Reflux Disease (GORD), Gastric Reflux Disease, Acid Reflux Disease Heartburn is a symptom of gastroesophageal reflux disease (GERD), which is a digestive disorder that affects the lower esophageal sphincter (LES) – the muscle connecting the esophagus with the stomach...”
...our question about Asthma
“...Certain asthmatic drugs that dilate the airways may relax the LES and contribute to GERD.”
...recommendation Tobacco Avoidance
“Studies show that cigarette smoking relaxes the lower esophageal sphincter (LES).”

Hiatal Hernia

...recommendation Increased Water Consumption
“...This gives the stomach extra weight which may pull it downward and allow better closure of the lower esophageal sphincter.  Additional downward pressure can be achieved by jumping off a chair after a meal before or after drinking the 16oz of water...”
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