University of Oklahoma Health Sciences Center

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Author/s:

Shreya Narayanan, Christopher D. Jackson, MD

Date Added:

November 14, 2025

Journal/Publication:

JAMA Patient Page

Publication Date:

November 13, 2025

URL:

What Is Diverticulitis?

Type:

Patient Education Materials

Format:

Poster

DOI (1):

10.1001/jama.2025.17403

PMID (1):

41231515

Keywords

Gastroenterology

Diverticulitis

Diverticulum

MeSH

diabetes mellitus, type 2

Analgesics

analgesics, opioid

Anti-Inflammatory Agents

Anti-Inflammatory Agents, Non-Steroidal

Diverticulitis

Diverticulitis, Colonic

risk factors

Diverticulum, colon

Inflammation

Ehlers-Danlos Syndrome

RPR Commentary

Information for patients about diverticulitis. James W. Mold, MD, MPH

Abstract

Diverticulitis involves inflammation of outpouchings of the intestinal wall, a condition known as diverticulosis.

Risk factors for diverticulosis include being older than 65 years, obesity (body mass index [BMI] of 30 or more), high blood pressure, type 2 diabetes, certain medications (such as opioids, steroids, and nonsteroidal anti-inflammatory drugs [NSAIDs]), connective tissue diseases (such as polycystic kidney disease, Marfan syndrome, and Ehlers-Danlos syndrome), and specific genetic variants.1

By age 60 years, nearly 60% of people have diverticulosis, most often on the left side of the colon. About 1% to 4% of people with diverticulosis develop diverticulitis in their lifetime. Acute diverticulitis affects about 180 per 100 000 people in the US each year, resulting in approximately 200 000 hospitalizations annually.