What causes diverticulosis to flare up?
William Rodriguez
Published Jan 19, 2026
As you get older, your colon wall can become weaker. This can cause small pockets or pouches to form in weakened areas of your colon. If these pouches get infected, it can cause a diverticulitis attack or flare-up.
What can irritate diverticulosis?
Actually, no specific foods are known to trigger diverticulitis attacks. And no special diet has been proved to prevent attacks. In the past, people with small pouches (diverticula) in the lining of the colon were told to avoid nuts, seeds and popcorn.
How do you treat inflamed diverticulosis?
Your doctor is likely to recommend:
- Antibiotics to treat infection, although new guidelines state that in very mild cases, they may not be needed.
- A liquid diet for a few days while your bowel heals. Once your symptoms improve, you can gradually add solid food to your diet.
What causes diverticulosis to become inflamed?
The pouches on your intestines get inflamed or infected when they tear or become blocked by feces. If you have more bad germs than good ones in your gut, that might cause it, too. Your chances of getting diverticulitis rise with age.
How long does a diverticulosis flare-up last?
Your doctor can usually treat diverticulitis with a special diet, plenty of rest, and, in some cases, antibiotic medica- tions. Once treated, most people start feeling better within a few days. Approximately 20% of patients will have another flare-up, or recurrence. This usually happens within 5 years.
19 related questions foundWhat foods should be avoided with diverticulosis?
Foods to avoid with diverticulitis include high-fiber options such as:
- Whole grains.
- Fruits and vegetables with the skin and seeds.
- Nuts and seeds.
- Beans.
- Popcorn.
Does diverticulosis affect bowel movements?
It is possible that some people with diverticulosis experience bloating, abdominal cramps, or constipation due to difficulty in stool passage through the affected region of the colon.
Can diverticulosis go away?
Dealing with diverticulosis
Once the sacs develop, they don't heal on their own, and they don't go away. We can cure diverticulosis by performing surgery to remove the sacs. But if you don't have symptoms and an infection doesn't develop, there's no reason to treat the condition at all, much less undergo surgery.
What does poop look like with diverticulitis?
Diverticulitis stool characteristics
Color: The stool may be bright red, maroon, or black and tarry, which indicates the presence of blood. Stools may contain more mucus than normal. Odor: The stool odor may be increasingly foul compared to the typical smell.
What is the best medicine for diverticulosis?
How is diverticulitis treated? If your diverticulitis is mild, your healthcare provider will prescribe an oral antibiotic, such as metronidazole (Flagyl®), trimethoprim-sulfamethoxazole (Bactrim®), ciprofloxacin (Cipro®) or amoxicillin and clavulanic acid (Augmentin®).
Are bananas good for diverticulosis?
Eating more fiber may help prevent future attacks. If you have bloating or gas, cut down the amount of fiber you eat for a few days. High fiber foods include: Fruits, such as tangerines, prunes, apples, bananas, peaches, and pears.
How long can diverticulosis last?
In about 95 out of 100 people, uncomplicated diverticulitis goes away on its own within a week. In about 5 out of 100 people, the symptoms stay and treatment is needed. Surgery is only rarely necessary.
Does chocolate affect diverticulosis?
During acute attacks of diverticulitis, eat a low-fiber diet. Avoid foods that may contribute to nausea or pain, such as caffeine, spicy foods, chocolate, and milk products. When symptoms of diverticulitis stop, gradually transition to a high- fiber diet. Medicine.
What drinks to avoid with diverticulitis?
Are alcohol and coffee bad for diverticulitis? Not necessarily, though you definitely want to avoid alcohol and caffeine if you're experiencing a diverticulitis attack. “Coffee is a bowel stimulant, so if you're having an attack you might want to stay away and rest your bowel,” says Dr.
What are the warning signs of diverticulitis?
The signs and symptoms of diverticulitis include:
- Pain, which may be constant and persist for several days. The lower left side of the abdomen is the usual site of the pain. ...
- Nausea and vomiting.
- Fever.
- Abdominal tenderness.
- Constipation or, less commonly, diarrhea.
How do I know if my diverticulitis burst?
In most cases, when you have diverticular bleeding, you will suddenly have a large amount of red or maroon-colored blood in your stool. Diverticular bleeding may also cause dizziness or light-headedness, or weakness. See your doctor right away if you have any of these symptoms.
What foods heal diverticulosis?
A diet rich in fiber can help keep stools soft and prevent inflammation.
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Diet for Diverticulosis
- Beans and legumes.
- Bran, whole wheat bread and whole grain cereals such as oatmeal.
- Brown and wild rice.
- Fruits such as apples, bananas and pears.
- Vegetables such as broccoli, carrots, corn and squash.
- Whole wheat pasta.
Is diverticulosis a serious condition?
In serious cases, diverticulitis can lead to bleeding, tears, or blockages. Your doctor will do a physical exam and imaging tests to diagnose it. Treatment may include antibiotics, pain relievers, and a liquid diet. A serious case may require a hospital stay or surgery.
Do probiotics help diverticulosis?
Since diverticulosis is associated with low fiber diet, dysbiosis is probably common in patients with diverticular disease. Probiotics may restore the balance of gut flora by decreasing pathogenic gram negative bacteria [Bengmark, 1998] and have been proposed to be used in diverticular disease to prevent inflammation.
How do you keep diverticulosis under control?
The best way to help prevent diverticulitis is to keep diverticulosis under control. That means eating a high fiber diet – which requires 20 to 35 grams of fiber each day. Fiber is found in grains, vegetables, and fruits.
Are salads good for diverticulosis?
You can add vegetables to the foods that you are eating or have soup, salad or cooked vegetables on the side; Increasing your fiber intake slowly; And taking in enough fluids along with the high fiber foods. Go for water, seltzer, club soda, and herbal teas.
What is the best drink for diverticulitis?
Water and clear juices (such as apple, cranberry, or grape), strained citrus juices or fruit punch. Coffee or tea (without cream or milk) Clear sports drinks or soft drinks, such as ginger ale, lemon-lime soda, or club soda (no cola or root beer) Clear broth, bouillon, or consommé
What causes diverticulosis to bleed?
Pouches may form when the high pressure pushes against weak spots in the colon. Weak spots are where blood vessels pass through the muscle layer of the bowel wall to supply blood to the inner wall. Bleeding occurs when the blood vessel going to the pouch breaks open.
Can Covid cause diverticulitis flare up?
Thus, while COVID-19-induced diverticulitis remains seemingly rare and largely unexplored, clinicians should maintain a broad differential diagnosis in COVID positive patients presenting with gastrointestinal symptoms.
Does diverticulosis hurt?
You can have diverticulosis and not have any pain or symptoms. But symptoms may include mild cramps, swelling or bloating, and constipation. These symptoms can also be caused by irritable bowel syndrome, stomach ulcers, or other health problems. These symptoms don't always mean that you have diverticulosis.