21/09/2025
70% of people develop gut pouches called diverticula by 80 — but small diet tweaks can keep your digestive system healthy.
By the age of 80, some 70% of people in Western countries develop diverticulosis. It's a condition where small pouches, called diverticula, form in the wall of the colon.
These pouches can become inflamed or infected, leading to diverticulitis, which causes abdominal pain, fever, nausea, and other serious symptoms that may require part of the intestines to be removed.
Though the exact causes aren’t fully understood, factors like low-fiber diets, obesity, inactivity, and genetics all play a role. Notably, cases are increasingly being seen in younger adults, likely linked to highly processed, fiber-poor diets.
Fortunately, outdated advice—like avoiding nuts and seeds—has been replaced by evidence-based guidelines.
Experts now emphasize the importance of a high-fiber diet to prevent complications. Fiber softens stool, reduces pressure on the colon, and lowers the risk of infection. Staying hydrated and physically active also supports gut health.
Simple steps like switching to whole grains, adding legumes, and incorporating fruits and vegetables can help meet the recommended 30g of fiber per day. With small, sustainable lifestyle changes, most people can manage or even prevent diverticular issues — and maintain long-term digestive wellness.
Source: Davies, S. (2025, September 14). Most People Develop Diverticulosis in Their Gut by Age 80 … So What Is It? The Conversation.