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Other aetiologies

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Lactose intolerance can result from almost any disorder causing mucosal injury with depletion of enteric lactase.

Possible causes include:

  • postinfective diarrhoea
  • inflammatory bowel disease
  • cow's milk protein intolerance
  • immunodeficiency states
  • bacterial overgrowth secondary to an anatomical abnormality

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