What are the recommended dietary modifications for patients diagnosed with diverticulosis?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 16 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

For patients diagnosed with diverticulosis, the recommended dietary modifications focus on a healthy, balanced approach:

  • General Diet: Advise patients to eat a healthy, balanced diet that includes whole grains, fruit, and vegetables ,. There is no need for them to avoid seeds, nuts, popcorn, or fruit skins ,.
  • Fibre Intake: If a patient has constipation and a low-fibre diet, increasing their fibre intake gradually may help minimise flatulence and bloating ,. Adults should aim to consume 30 grams of fibre per day . Patients should be advised that the beneficial effects of increasing dietary fibre may take several weeks to achieve, and if tolerated, a high-fibre diet should be maintained for life ,.
  • Fluid Intake: It is important to drink adequate fluid, especially when increasing fibre intake, to reduce the risk of dehydration ,.

Related Knowledge Topics

Educational content only. Always verify information and use clinical judgement.

Patients Diagnosed With Diverticulosis: Dietary Modifications: Guideli