There are many possible causes for irritable bowel syndrome. Some of these include:
- Food sensitivities;
- Lactose intolerance;
- Poor nutrient absorption;
- Endometriosis,
- Stress;
- Mind-body interaction;
- Hormonal imbalances;
- Environmental Sensitivities.
In 20% of cases irritable bowel syndrome is triggered by an infection (in these cases, people are more likely to have this syndrome with diarrhea as the dominant symptom). The infection causes inflammation in the mucosal tissues (the intestinal lining), which in turn stimulates immune and muscle changes. When the inflammatory response is continuous over time, the intestines learn to be over- or under-reactive to stimuli.