When small pouches called diverticula, small bulging sacs that form in the lining of the digestive tract, usually in the colon. Also known as diverticulosis, it often causes no symptoms—but when they get infected or inflamed, that’s diverticulitis. This is when you feel sharp pain in your lower left belly, fever, nausea, or changes in bowel habits. It’s not rare—nearly half of adults over 60 have diverticula, and about 1 in 4 of them will have an episode of diverticulitis at some point.
What triggers the inflammation? It’s not just one thing. Low-fiber diets over time can lead to higher pressure in the colon, making pouches form. When stool or bacteria get trapped in those pouches, infection follows. Antibiotics are often used to treat mild cases, but newer guidelines suggest that for many people, rest, fluids, and a liquid diet may be enough. You don’t always need strong meds. And while old advice told you to avoid nuts, seeds, and popcorn, research now shows those foods don’t cause flare-ups. In fact, eating more fiber—whole grains, beans, vegetables—can help prevent them.
Not everyone with diverticulitis needs surgery. Most cases are managed with lifestyle changes and medication. But if you have repeated episodes, abscesses, or complications like a hole in the colon, surgery might be needed. Your doctor will weigh the risks and benefits, just like they do with any other treatment. The key is catching it early and knowing what to eat after an attack. A low-fiber diet might be recommended short-term during a flare, but long-term, you want to build up fiber again to keep things moving smoothly.
Diverticulitis doesn’t just affect older adults. More younger people are being diagnosed, possibly linked to diet, obesity, or lack of physical activity. If you’ve had one episode, your risk of another goes up—so prevention matters. It’s not about avoiding certain foods anymore. It’s about consistent habits: staying hydrated, moving your body, and eating real food. And if you’re on long-term medications like NSAIDs or steroids, talk to your doctor—those can increase your risk too.
Below, you’ll find real, practical advice from people who’ve been there. From how to manage pain without overdoing meds, to what to eat after a flare, to understanding when it’s time to see a specialist. These aren’t generic tips. They’re based on actual cases, current guidelines, and what works when your gut is screaming for help.
Diverticulitis is inflamed pouches in the colon that cause severe abdominal pain, fever, and digestive issues. Learn how it's diagnosed, when antibiotics are needed, what to eat, and how to prevent future attacks.