Barrett's Esophagitis in Anorexia Nervosa Binge/Purge Subtype

This study investigates whether people with anorexia nervosa who regularly purge (vomit after eating) are at higher risk of developing Barrett's esophagus — a serious condition where stomach acid repeatedly damages the lining of the esophagus (food pipe), which can sometimes lead to cancer. Researchers want to understand how many years of purging it takes for this damage to occur, and whether routine screening should be offered to this group of patients. **You may be eligible if...** - You have an eating disorder that involves purging (such as anorexia nervosa binge/purge subtype or bulimia) - You are 18 to 65 years old - You have been purging for 5 or more years - You currently purge or ruminate at least once daily - You are admitted to the ACUTE Center for Eating Disorders and Severe Malnutrition **You may NOT be eligible if...** - Your eating disorder does not involve purging - You are under 18 or over 65 - You already meet standard guidelines for Barrett's esophagus screening (chronic acid reflux plus other risk factors) - You are receiving mandated treatment at the time of enrollment - You are unable to give informed consent Talk to your doctor to see if this trial is right for you.