Food Rumination Syndrome

Rumination syndrome is a condition in which people repeatedly and unintentionally spit up (regurgitate) undigested or partially digested food from the stomach, rechew it, and then either reswallow it or spit it out. Because the food hasn’t yet been digested, it reportedly tastes normal and isn’t acidic, as vomit is.


Cluster Number:
Wiki Number: PW190
Diagnosis: (Food) Rumination Syndrome
US Patients: 10% of institutionalized infant or child mental disabilities
World Patients:
Sex Ratio: B;G+
Age Onset: Age 11, boys; age 14, for girls.
Brain Area: This appears to be involuntary, not consciously caused by the person.
Symptoms: in children and those with cognitive disabilities, regular regurgitation of meals by involuntary contraction of abdominal muscles
Progression: Unlike normal vomit, the process is normal and unforced. Damage to the esophagus and alimentary canal, malnutrition, weight loss
Causes: Undecided.
Therapies: For children or limited intelligence, a sour or bitter taste on the tongue is aversion training. Abdominal breathing helps others.


The world-wide medical research
reports chosen for each diagnosis 

Clicking each title opens the
PubMed article’s summary-abstract.

  • Prevalence, symptoms and risk factor profile of rumination syndrome and functional dyspepsia: a population-based study
    by Mudar Zand Irani on October 9, 2021

    CONCLUSION: Rumination syndrome overlaps with FD with a shared risk factor profile, suggesting a common pathophysiology.

  • Rumination Syndrome in Children and Adolescents: A Mini Review
    by Marc Martinez on September 7, 2021

    Introduction: Rumination syndrome involves recurrent regurgitation of food and is believed to be underdiagnosed with patients experiencing long delays in diagnosis. It can be associated with significant social consequences, high rates of school absenteeism, and medical complications such as weight loss. The primary aims of the current review are to assess the literature regarding prevalence, pathophysiology, and treatment outcomes with a focus on neurotypical children and adolescents. Results:...

  • Rumination syndrome: Critical review
    by Luis Gerardo Alcala-Gonzalez on May 23, 2021

    Rumination syndrome is a functional disorder characterized by the involuntary regurgitation of recently swallowed food from the stomach into the mouth, from where it can be re-chewed or expelled. Clinically, it is characterized by repeated episodes of effortless food regurgitation. The most usual complaint is frequent vomiting. The physical mechanism that generates regurgitation events is dependent on an involuntary process that alters abdominal and thoracic pressures accompanied by a permissive...

  • Rumination syndrome. A review article
    by J Chahuan on February 19, 2021

    Rumination syndrome is a functional gastrointestinal disorder characterized by effortless postprandial regurgitation of ingested food into the mouth. An unperceived postprandial contraction of the abdominal wall could be a key mechanism. In those patients, retrograde flow of the ingested gastric content into the mouth is produced due to a simultaneous combination of elevated intra-abdominal pressure and negative intrathoracic pressure. The estimated prevalence is around 2% in the general adult...