Nutrition Myths

Functional gastrointestinal disorder

Functional gastrointestinal disorders (FGIDs) are disorders affecting a function of any part of the gastrointestinal tract: esophagus, stomach or intestines. Most common FGIDs are:

  • Irritable bowel syndrome (IBS);
  • Functional dyspepsia.

There are 3 main features of FGIDs:

  • Abnormal motility (sequence of muscular contractions that allows the contents of intestines to move along). It can be characterized by pain due to muscular spasms, fast contractions causing diarrhea or slow contractions causing constipation;
  • Sensation – discomfort or pain due to over-sensitive nerves reacting abnormally to normal contractions;
  • Brain-gut dysfunction – pain in the bowel due to disharmony between the gastrointestinal system and brain communication. (1)

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