Risk factors

Several factors may increase your risk of developing diverticulitis:

• Aging. The incidence of diverticulitis increases with age.
• Obesity. Being seriously overweight increases your odds of developing diverticulitis.
• Smoking. People who smoke cigarettes are more likely than nonsmokers to experience diverticulitis.
• Lack of exercise. Vigorous exercise appears to lower your risk of diverticulitis.
• Diet high in animal fat and low in fiber. A low-fiber diet in combination with a high intake of animal fat seems to increase risk, although the role of low fiber alone isn't clear.
• Certain medications. Several drugs are associated with an increased risk of diverticulitis, including steroids, opioids and nonsteroidal anti-inflammatory drugs, such as ibuprofen (Advil, Motrin IB, others) and naproxen sodium (Aleve).