Causes of IBS
So far, it is not fully known what the exact cause of IBS is. On internal examination, everything may look normal, but still the colon does not function properly.
The large intestine can be seen as a muscular snake that kneads and propels the stool. Due to strong contractions of the intestinal muscles, the stool enters the rectum, after which it leaves our body through the anus.
In the large intestine, water and salts are extracted from the stool, making it firmer and doughy. However, if food residues pass through the large intestine too quickly or too slowly, either too much or too little water remains in the food slurry. This leads to diarrhea (too much water) or constipation (too little water).