Article

Diverticulitis: Separating Fact from Fiction

Published on Wednesday, March 09, 2022
by Andy De Santis

Health & Wellness

The Painful Truths of Diverticulitis: What You Need to Know

Diverticula are essentially bulges within various parts of the digestive tract—especially the colon—that may become more common with advancing age.

The presence of multiple bulges is known as diverticulosis, and in some individuals, this can progress into a painful inflammatory condition known as diverticulitis.

Diverticulitis typically manifests as acute attacks of abdominal pain, fever, and unexpected changes in bowel habits. It is most common in people over the age of 60 and may occur slightly more often in women. In the United States, this condition contributes to over a million hospital days each year.

Bouts of diverticulitis may be treated in a variety of ways, ranging from a temporary liquid diet and antibiotics to surgery in more severe cases.

There are a number of dietary considerations—and misunderstandings—when it comes to managing and preventing this condition. The goal of today’s article is to help clear those up.

Let’s get right to it.

Risk Factors (Diet + Lifestyle)

A 2017 study published in The American Journal of Gastroenterology identified several lifestyle and dietary factors associated with an increased risk of diverticulitis.

These include:

High red meat intake (more than one serving per day)
Smoking
Low physical activity
A low-fiber diet

On the other hand, higher fiber diets—particularly those rich in vegetables—along with regular physical activity, were associated with a reduced risk.

Diverticulitis Myth Busting

Now this is where it gets interesting.

One of the most common dietary myths surrounding diverticulitis is that fiber-rich foods such as nuts, seeds, and popcorn should be avoided because they may get “caught” in diverticular pouches and increase inflammation.

However, current guidance does not support this.

The American Gastroenterological Association suggests against routinely advising patients with a history of diverticulitis to avoid seeds, nuts, and popcorn.

In fact, emerging evidence suggests that diets higher in plant-based proteins—such as nuts, seeds, legumes, and tofu—may actually be associated with a lower risk of diverticulitis-related hospitalizations.

And What About Probiotics?

Given their popularity in gut health discussions, probiotics have been explored as a potential management tool for diverticular disease.

However, at this time, the available research is limited, and the quality of evidence is not strong enough to support routine probiotic use specifically for diverticulitis management.

Nutrition During Flare-Ups

While a high-fiber diet is generally recommended for prevention, the approach may shift during an active flare.

Individuals experiencing acute diverticulitis may be temporarily advised—under medical supervision—to follow a short-term liquid or low-residue diet before gradually reintroducing fiber.

This allows the digestive tract time to rest before returning to a more balanced, fiber-rich pattern.

Final Thoughts

Diverticulitis can be painful and disruptive, but understanding the role of diet and lifestyle can make a meaningful difference in both prevention and management.

Focusing on:

Adequate fiber intake
Regular physical activity
Balanced dietary patterns

—and moving away from outdated food restrictions—can help support long-term digestive health.

As always, recommendations should be individualized, and working with a healthcare provider is key, especially during active symptoms.

_{Strate, L. L., & Morris, A. M. (2019). Epidemiology, pathophysiology, and treatment of diverticulitis.}_{Gastroenterology, 156}_{(5), 1282–1298.e1.}_{https://doi.org/10.1053/j.gastro.2018.12.033}
_{Strate, L. L., Keeley, B. R., Cao, Y., Wu, K., Giovannucci, E. L., & Chan, A. T. (2017). Western Dietary Pattern Increases, and Prudent Dietary Pattern Decreases, Risk of Incident Diverticulitis in a Prospective Cohort Study. Gastroenterology, 152(5), 1023–1030.e2.}_{https://doi.org/10.1053/j.gastro.2016.12.038}
_{Stollman, N., Smalley, W., Hirano, I., & AGA Institute Clinical Guidelines Committee (2015). American Gastroenterological Association Institute Guideline on the Management of Acute Diverticulitis. Gastroenterology, 149(7), 1944–1949.}_{https://doi.org/10.1053/j.gastro.2015.10.003}
_{University of California San Francisco Health. (n.d.).}_{Diverticulitis diet.}_{https://www.ucsfhealth.org/education/diverticulitis-diet}