Diverticulitis and fibre: what should you know?

Diverticula are small pouches in the bowel wall. Diverticulitis means that a pouch has become inflamed, which can cause lower abdominal pain, fever, nausea or a change in bowel habits. Fibre can add bulk and help stool move, but increasing it suddenly during significant pain, vomiting or poor intake may be unsuitable. Once the flare is improving, foods such as oats, vegetables, fruit, beans and whole grains can be introduced in a way that matches your symptoms.

Take small, regular drinks unless a clinician has restricted your fluids. Reintroduce fibre slowly and notice whether bloating, cramping or bowel changes follow. Do not use laxatives, fibre supplements or pain medicines as a substitute for assessment when symptoms are worsening. A GP can review your examination, medicines and bowel pattern; nutrition counselling may help you build a tolerable eating plan.

Arrange prompt medical advice for persistent or worsening abdominal pain, fever, repeated vomiting, inability to drink, marked abdominal swelling, or constipation with increasing discomfort. Seek urgent care for severe pain, faintness, confusion, or blood in the stool. These features can signal a complication or another bowel problem and should not be managed by changing fibre alone.

Ask when to restart fibre, which foods or supplements suit your symptoms, how much fluid is appropriate for you, and whether your medicines could be affecting constipation or pain.