What Causes Intestinal Polyps?

Colonic polyps refer to abnormal growths protruding from the surface of the intestinal mucosa. Prior to definitive pathological diagnosis, such lesions are collectively termed “polyps.” Their incidence increases with age and is more common in males. Polyps occur most frequently in the colon and rectum, while small intestinal polyps are relatively rare. So, what causes colonic polyps? Below, we address this question.

What Causes Colonic Polyps?

1. Dietary Factors

Diet plays a significant role in the development of colonic polyps—particularly frequent consumption of spicy or irritating foods, as well as preserved or cured foods, which are recognized risk factors for developing colonic polyps.

2. Genetic Factors

Colonic polyps are widely believed to be closely associated with genetic predisposition. Research indicates that the likelihood of inheriting this condition is equal between males and females, with no gender-based difference in genetic susceptibility. The higher prevalence observed in males is attributed instead to unhealthy lifestyle habits more commonly seen in this group.

3. Inflammatory Stimulation

Chronic inflammatory stimulation of the intestinal mucosa can lead to polyp formation. Persistent inflammation causes mucosal congestion, edema, erosion, and ulceration; during healing, scar tissue gradually contracts, resulting in polypoid growths. Additionally, chronic inflammation may obstruct glandular ducts, leading to mucus retention and subsequent polyp development.

4. Fecal Residue, Foreign Bodies, and Mechanical Injury

Prolonged irritation of the intestinal mucosa by coarse fecal particles or foreign bodies—as well as other causes of mechanical injury to the rectal mucosa—can also contribute to polyp formation. Clinically, colonic polyps are often asymptomatic and are frequently discovered incidentally during routine health examinations.

The above outlines the primary causes of colonic polyps. We hope this information is helpful to you.