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Diverticulosis and Diverticulitis

A high fiber diet is broadly recommended to prevent diverticular disease based on unconfirmed, unproven, untested, and speculative "theories" that a low fiber diet causes this pathology. The reality is the complete opposite — a high fiber diet is the primary cause of diverticular disease and related complications.

Diverticular disease has two distinct phases — diverticulosis and diverticulitis. The first phase simply means that you've already have one diverticulum (singular) or several diverticula (plural) inside the large intestine. Because it has no symptoms, diverticulosis is usually discovered during a routine colonoscopy or radiography exam.

The moment diverticulosis turns into diverticulitis — inflammation of one or more diverticula. The second phase — the conventionally-recommended treatment causes even more harm because it is based on a combination of antibiotics and fiber. It subjects patients to the unnecessary risks of abdominal surgery to remove the affected colon, impaired immunity, uncontrollable bleeding, ulcers, and strokes. This guide describes how to prevent diverticulitis without resorting to fiber and antibiotics.

Client's testimonial

I have been in health care for 42 years. Primarily critical care. Diagnosed with IBS in my 20's and manged it well. Until last week week I ended up in ER with diverticulitis I will never forget. I have not only witnessed the mishandling of this disease but now am a testament to it. Thank you from the bottom of my heart for your superb advise! May I print this article and share it with my medical community, including my Doctor? May God bless you!!! J.S. (via e-mail)

Well-known facts about diverticulosis

Diverticular disease isn't caused by genes or aging — two popular and widely believed misconceptions or intentionally told lies:

These "other causes" are hard stools (either large or small), constipation, and straining:

“Constipation makes the muscles strain to move stool that is too hard. It is the main cause of increased pressure in the colon. This excess pressure might cause the weak spots in the colon to bulge out and become diverticula.”

Diverticulosis and Diverticulitis;
National Institutes of Health; Publication No. 07–1163;

 —  But I've never been constipated! My doctor diagnosed diverticular disease anyway. Why?

 —  Hard stools, that's why. People who have hard stools (either small or large), and strain to move the bowels, however slightly, never consider themselves constipated.

The classical definition of constipation is "hard, large stools," not the frequency or regularity of stools. Alas, most people nowadays, including medical professionals, confuse constipation with the frequency of stools. In this erroneous worldview, only a person who hasn't had a complete bowel movement for more than three days is considered constipated, while everyone else is just "normal" or "irregular."

A few generations ago, the term "costivity" was broadly used to describe large, hard stools and straining, while the term "constipation" was used to describe irregularity. Unfortunately, both terms have blended into one, and the distinction is no longer made.

For these reasons, I reclassified constipation (see Fiber Menace, p.p. 97-128) into three distinct stages: functional (still reversible), latent (hidden), and organic (irreversible)::

All through these three transformative stages, the degree of straining increases, while the frequency of stools may remain regular "thanks" to the laxative effect of dietary fiber. That's why you can develop the diverticular disease without any apparent "constipation." In reality, your constipation was already latent or organic but rendered invisible by laxatives or a laxogenic diet (i.e., high-fiber).

So it all boils down to English-language definitions. If constipation was defined as "having large stools regularly that may require a certain degree of straining" or "a condition requiring a high-fiber diet and laxatives," instead of "not having stools for three days in a row," you wouldn't develop the diverticular disease in the first place.

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Thus, with the correct definitions of constipation, you and your doctors would logically concentrate on reducing stool size and preventing straining — the essence of my recommendations — instead of attaining stools at least once every three days. Those who have small stools and never strain while moving bowels are unlikely to develop diverticular disease, regardless of their age or gender.

t's also apparent, then, that the life-long avoidance of large stools and straining is key to preventing and treating diverticular disease, and it's particularly paramount for aging adults.

The alternatives to not treating the underlying causes of large stools, constipation, and straining are more fiber in the diet, more laxatives, more antibiotics, more pain and suffering, invasive surgeries, substantial expense, and more of the same time and again — where there is one diverticulum, there is often another lurking nearby, and the only way to get rid of them all is to surgically remove the entire colon, which is not exactly a safe or desirable option.

Diverticular disease gains in "popularity" with age: 10% are affected by the age of 40, over 50% by age 60, and almost 90% beyond 80 years of age. No surprise here: constipation and straining are particularly widespread among aging adults. More women than men are affected by the diverticular disease because constipation affects significantly more women than men.

Sad, but true: unless you eliminate large stools or straining and restore the natural functioning of the large intestine, diverticular disease ALWAYS gets worse. This guide explains why it gets worse and how to avoid it. Read on.

Prognosis: Most often from bad to worse

If, on the other hand, you don't restore intestinal flora and small stool size and continue straining, the diverticula may get filled by stagnant stools, become infected, and turn into diverticulitis — an inflammation or ulceration of one or more diverticula.

When diverticula get infected, you may experience high fever, sense pain in the lower abdomen, observe blood in the stools, or begin suffering from paradoxical diarrhea, which is a symptom of intestinal obstruction.

When that happens, anything is possible: from an abscess obstructing the colon to perforation of the intestinal wall; from deadly peritonitis to even deadlier sepsis. And that's what you want to avoid because a large share of people don't survive this experience, even when surgeons and hospitals are nearby and first class.

These risks are even more significant to the uninsured, underinsured, or people far away from a large metropolitan area, which are commonly relegated to overloaded, understaffed, under-equipped, and low-rated community hospitals, where the experience of general surgeons may not be as high as in the teaching or specialized hospitals.

In these cases, an emergency operation to treat peritonitis by a general surgeon instead of an experienced gastric surgeon with a similarly top-notch surgical team usually has an outcome similar to asking a professional cabbie to substitute a Formula One pilot.

So even if you are Mr. Buffet or Mr. Gates, and you happen to be somewhere in the 'boondocks' (even with a fuelled jet standing by to whisk you out, which is too late in this case), your chances of surviving a perforation of infected diverticula aren't very high, considering that even in the best hospitals mortality rates are sky-high — upwards of 25%.

I don't write this to convince you that diverticulitis is dangerous (it is), but to tell you — don't be an idiot hoping that your good insurance, good doctors, or loads of money may help you to get away with this deadly ailment.

Recovery Guidelines: Pay and Pray vs. Think and Act

There are two opposed approaches to remedy lifestyle diseases, and diverticular disease is no exception:

My approach to eliminating the causes of diverticular disease is inexpensive and straightforward. Just follow these three logical steps:

Step #1. Eliminate dietary fiber

Considering everything you've previously read, heard, or known about the diverticular disease, you must first eliminate dietary fiber and fiber laxatives from your diet! There are three fundamental properties of fiber — bulk, acidity, and gases (the last two from fermentation) — that make it such a disastrous choice for the prevention of diverticular disease:

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Nonetheless, fiber is still recommended because it's the only “soft” laxative considered suitable for long-term (years instead of just days or weeks) use. In essence, fiber is a lesser kind of evil vis-à-vis other types of “hard” laxatives.

Not that medical professionals or even patients aren't well-aware of fiber's significant side effects — patient notes (which describe them) are inserted into every single package of fiber laxatives:

“Side Effects: Bloating, gas, and a feeling of fullness may occur. If these effects continue or become bothersome, inform your doctor. Notify your doctor if you experience: stomach cramps, nausea, vomiting, rectal bleeding, unrelieved constipation.”

Metamucil Powder; Rite Advice,
Patient Counseling at

And it makes no difference whether the fiber comes from a capsule, powder, shake, wafer, or one‘s diet — once inside your gut, fiber is still fiber regardless of how it was processed and packaged.

Even if none of these side effects bother you, once you're hooked on fiber, straining becomes inescapable for the following reasons:

And that‘s how the problems commence. Because the maximum opening (aperture) of an adult anus is tiny — 3.5 cm (1.4”) — large stools can‘t easily pass. If you already have enlarged internal hemorrhoids — and about two-thirds of people over fifty do — the anal opening is even smaller. Straining becomes the only way to expel large stools through the narrow pathway.

Next comes the possibility of inflammation inside the diverticula because soluble fiber (mucilage, hydrophilic mucilloid) is a potent inflammatory and diarrhea-causing agent. Inflammatory bowel disease (IBD) directly contributes to developing alternating patterns of diarrhea and constipation, straining, new diverticula formation, and diverticulitis.

But here comes the Catch 22: once you've eliminated all kinds of fiber, constipation may grow even worse because now stools are starting to become small, hard, and dry, and you need to strain even harder to expel them. This phenomenon is well familiar to anyone who tried and failed the Atkins Diet, which is fiber-free by design.

To overcome the vicious cycle of fiber dependence, follow my recommendations in the Overcoming Fiber Dependence guide.

Step #2. Restore intestinal flora

Healthy bacteria reside and procreate inside the mucosal membrane's protective layer and derive their nutrients from mucus. To give bacteria a good home and a head start, your mucosal membrane must be healthy, well-nourished, and populated with beneficial bacteria. To accomplish this goal, follow my recommendations in the e Dysbacteriosis (Dysbiosis) guide.

Step #3. Eliminate straining

Straining is a “side effect” of large stools, hard stools, irritable bowel syndrome, anorectal nerve damage, impaired peristalsis, and constipation.

Whatever you happen to have, all of these conditions are addressed in depth in the Restoring Normal Bowel Movements and Restoring Anorectal Sensitivity guides. If you are affected by IBS, please also study the Irritable Bowel Syndrome guide.

It goes without saying, that all of these three guides are interrelated, and all three steps are usually executed in parallel.

That's all there is to my method:

— Stay clear of soluble and insoluble fiber in foods and laxatives;

— Normalize your stools to prevent straining.

— Eliminate dysbacteriosis.

— Restore the biological function of your large intestine.

— Help the bacteria to take hold inside your gut.

Simple, safe, inexpensive, efficient, and good for your health.

Finally, let me warn you in the least ambiguous terms: when experiencing diverticulitis — an acute form of the diverticular disease — DO NOT FOLLOW ANY OF THESE RECOMMENDATIONS. At this point, you'll need professional medical help. Only once you are stable — no bleeding and no sharp pain — you can start relying on the above guides to prevent a relapse.

Also, I recommend informing your doctors as forcefully as possible about this site and Fiber Menace. Don't be embarrassed — it's your health and life on the line, not your self-esteem. Dead patients don't blush. The doctors aren't shrinking violets either — they'll take your advice in stride because they too don't want to get embarrassed by prescribing you a wrong and harmful treatment.

But suppose they ignore your pleas to review this information and continue to insist that you keep using fiber and antibiotics to prevent and treat diverticular disease. In that case, they will, at the very least, violate the code of medical ethics (Hippocratic Oath). It says:

 —  I will prescribe regimens for the good of my patients according to my ability and my judgment and never do harm to anyone.

 —  To please no one will I prescribe a deadly drug nor give advice which may cause his [patient] death.


Author‘s note

This analytical essay was published back in 2009. As expected, it was universally ignored, dismissed, and ridiculed by patients and doctors alike. Several years and millions of harmed lives later, I was finally proven right. Judge for yourself:

Fiber Not Protective Against Diverticulosis

“Contrary to popular medical wisdom, following a high-fiber diet has no protective effect against developing asymptomatic diverticulosis, according to a colonoscopy-based study presented at the 2011 Digestive Disease Week (DDW) meeting (abstract 275). In fact, the study showed that patients who ate more fiber actually had higher prevalence of the disease.” [Gastroenterology and Endoscopy News, July 2011, Volume: 62:07]

Fiber May Not Prevent Diverticular Disease

“For decades, doctors have recommended high-fiber diets to patients at risk for developing the intestinal pouches, known as diverticula. The thinking has been that by keeping patients regular, a high-fiber diet can keep diverticula from forming. But the new study suggests the opposite may be true.” [WebMD, January 23, 2012]

A High-Fiber Diet Does Not Protect Against Asymptomatic Diverticulosis

“A high-fiber diet and increased frequency of bowel movements are associated with greater, rather than lower, prevalence of diverticulosis. Hypotheses regarding risk factors for asymptomatic diverticulosis should be reconsidered.” [Gastroenterology; Volume 142, Issue 2, Pages 266-272.e1, Feb. 2012]

Antibiotics May Not Improve Outcomes in Diverticulitis

“In summary, we now have a paradigm shift that maybe diverticulitis shouldn't be treated with antibiotics, recognizing that in some cases, it may be more of an inflammatory process and not an infection. It's safe to say that it is reasonable to withhold these antibiotics in patients with uncomplicated disease and closely follow them.” [, January 21, 2016, free registration required]