What Cause Irritable Bowel Syndrome?
What cause irritable bowel syndrome (IBS) is unknown, but most experts think that it’s related to problems with digestion and increased sensitivity of the gut.Many causes have been suggested – including inflammation, infections and certain diets – but none have been proven to directly lead to IBS.
Problems with digestion
Your body usually moves food through your digestive system by squeezing and relaxing the muscles of the intestines in a rhythmic way.However, in IBS it’s thought that this process is altered, resulting in food moving through your digestive system either too quickly or too slowly.If food moves through your digestive system too quickly it causes diarrhoea and Cause Irritable Bowel Syndrome, because your digestive system does not have enough time to absorb water from the food.If food moves through your digestive system too slowly it causes constipation and Cause Irritable Bowel Syndrome, as too much water is absorbed, making your stools hard and difficult to pass.It may be that food does not pass through the digestive systems of people with IBS properly because the signals that travel back and forth from the brain to the gut are disrupted in some way.It has also been suggested that problems such as bile acid malabsorption (where bile produced by the liver builds up in the digestive system) may be responsible for some cases of IBS.
Increased gut sensitivity
Many sensations in the body come from your digestive system. For example, nerves in your digestive system relay signals to your brain to let you know if you are hungry or full, or if you need to go to the toilet.Some experts think that people with IBS may be oversensitive to the digestive nerve signals. This means mild indigestion that is barely noticeable in most people becomes distressing abdominal (stomach) pain in those with IBS.