Who gets diverticula and what causes it?
Diverticula are common. They become more common with increasing age. About half of all people in the UK have diverticula by the time they are 50 years old. Nearly 7 in 10 have diverticula by the time they are 80 years old
What causes diverticula?
The reason why diverticula develop is not clear. It is thought to be related to not eating enough fibre. Fibre is the part of food that is not digested.
Your gut moves stools (faeces) along with gentle squeezes of its muscular wall. The stools tend to be drier, smaller, and more difficult to move along if you don't eat much fibre. Your gut muscles have to work harder if there is little fibre in your gut. High pressure may develop in parts of your gut when it squeezes hard stools. The increased pressure may push the inner lining of a small area of your gut through the muscle wall to form a small diverticulum.
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