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Diverticulitis Diet: Foods to Eat And Foods to Avoid


First off, let’s remind you about what diverticulitis is: WebMD defines it as inflammation or infection of the pouches called diverticula on the intestine walls. Before that can happen, you’ll have a condition called diverticulosis, which is the actual formation of the pouches – which is usually quite harmless, says the source.

When it progresses to diverticulitis, it “may involve anything from a small abscess in one or more of the pouches to a massive infection or perforation of the bowel,” it adds. If there’s good news, you can potentially improve the condition by adding or avoiding certain foods. Here are 12 of them…

1. Good or Bad: High Fiber Foods

Healthline.com says that fiber-rich foods may not only improve symptoms of diverticulitis, but also prevent it in the first place. It cites a 2017 review of studies that concluded these points.

However, the source does add that high fiber intake may not be suitable for all patients with this condition, and that your doctor may recommend you scale back on fiber intake if your symptoms are strong. “This is because fiber adds bulk to the stool and may increase peristalsis or colon contractions,” it explains.

2. Good: Low-Fiber Foods

While it’s important to get some fiber in your diet, that’s not so much the case if you’re having painful flare-ups associated with diverticulitis, explains Healthline.

Low fiber foods can include white rice, white pasta, processed fruits, cooked fish or eggs, potatoes without skin, and fruit or vegetable juice, it adds. On the flipside, fiber rich foods to avoid if your symptoms are more intense include beans, legumes, whole grains, and raw vegetables or fruits.

3. Bad: Fruit/Vegetable Skins

Reader’s Digest says if you’re on a low fiber diet, then it’s best if you remove the skins from fruits and vegetables because they are packed with fiber. In addition, the source says you should seek out canned (or cooked) produce instead of the raw variety, as it generally contains less fiber.

In this particular diet, you should also try to avoid nuts, seeds, legumes (such as snow peas), and whole grains, it adds.

4. Bad: FODMAP Foods

What the heck is a fodmap? Healthline defines it as food that is high in fermentable oligosaccharides, disaccharides, monosaccharides, and polyols. Foods that contain high levels of FODMAPs include apples, pears, plums, dairy, fermented products, beans, cabbage, onions, and garlic, it notes.

The source explains that research has shown a diet that limits these FODMAPs could not only benefit those with irritable bowel syndrome, but possibly also those with diverticulitis.

5. Good: Clear Liquids

In the context of diverticulitis, consuming clear liquids may “give your digestive system a rest, which can help to ease some of your uncomfortable symptoms,” explains Reader’s Digest.

The goal of this clear liquid diet is also to reduce bulk of your stool, which in turn can reduce inflammation, it adds. So what foods fall under the clear liquid classification? According to the source, it includes chicken or vegetable broth, water, tea, apple juice, and plain gelatin.

6. Bad: Broths with Vegetables or Rice

On the topic of clear liquids, Reader’s Digest says that you should avoid any broths that contain vegetables, rice, or noodles. It also notes you should drink your tea without adding cream or milk.

If you’re going the juice route, you should only drink those that have the pulp removed, it adds. That includes strained lemonade. “To give your digestive system time to heal, sticking to a clear liquid diet is key,” it adds.

7. Good: Fermented Foods

EveryDayHealth.com explains that foods containing “active cultures” can be helpful for those with diverticulitis, and more accurately, can help prevent it. These foods include yogurt, kimchi, miso, kombucha, and kefir, says the source.

These types of foods can promote better digestion and reduce constipation associated with diverticulosis, it adds. There are several other benefits to consuming fermented foods, such as heightened immunity, and it may also help you avoid diseases such as diabetes.

8. Good or Bad: Nuts, Seeds, Popcorn

These foods offer some nutritional value, but traditionally doctors have advised patients avoid them, says Healthline. “This was because it was thought that the tiny particles from these foods might get lodged in the pouches and lead to an infection,” it adds.

However, apparently the thinking on this has shifted, and doctors are distancing themselves from this strategy, it explains. It adds that more recent research does not show a strong link between nuts, seeds, and popcorn and increased symptoms of diverticulitis.

9. Bad: A ‘Western’ Diet

Healthline says that a standard diet in North America is high in fat and sugar (and low in fiber), and this could be driving a higher rate of diverticulitis.

The source says there’s research to suggest that avoiding certain foods can reduce the risk of developing diverticulitis or dampen the symptoms. These foods include red meat, refined grains, full-fat dairy products, and deep-fried foods, it says.

10. Good: Full Liquid Diet

Reader’s Digest says this stage of the diet typically comes after a few days of being on the clear liquid diet, and allows for a bit more variety. “This phase of the diet for diverticulitis consists of liquids permitted on the clear liquid diet along with things like milk, pudding, thick soups, and cooked cereals,” it adds.

You may also be told you can eat foods such as smooth ice cream, butter, and frozen yogurt, it adds. Liquid nutritional supplements may also be allowed, but only consume these if your doctor approves it, adds the source.

11. Bad: Whole Grains

If you’re on the full liquid diet, don’t jump to solids without the green light from your doctor, advises Reader’s Digest. That means avoiding some of the foods we’ve already mentioned, such as nuts and seeds, and whole fruits and vegetables.

It also includes avoiding high-fiber whole grains such as cereal, brown rice, and whole wheat bread, adds the source. It notes that after a few days on the full liquid diet, you should be able to move up to solids, but don’t do it until your doctor says you’re ready.

12. Good: Avoiding Future Flare-Ups

Reader’s Digest says you can consult your health team about adding more fiber back into your diet once you’re feeling better. When you get approval, “you should slowly increase your fiber intake back up to the recommended 25 to 35-grams per day,” it notes.

Following a high fiber diet when you don’t have symptoms can help keep future flare-ups at bay – but be wary of the negative effects of high fiber on existing symptoms that we mentioned. You should also exercise regularly and make sure you’re well hydrated throughout the day (with up to 12-glasses of water daily), it adds.

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