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Updated: Apr 23, 2026

Evaluation of Colorectal Cancer Risk and Prevalence by Stool DNA Integrity Detection
Published on: June 8, 2020
Editorial: Constipation and colorectal cancer risk: a continuing conundrum
Joseph C Anderson1, Brian E Lacy2
11] Department of Veterans Affairs Medical Center, White River Junction, Vermont, USA [2] The Geisel School of Medicine at Dartmouth College, Hanover, New Hampshire, USA.
Constipation and bowel movement frequency do not correlate with colorectal cancer (CRC) risk. However, non-fiber laxative use may increase CRC risk, while fiber laxatives show a protective effect.
Area of Science:
- Gastroenterology
- Oncology
- Epidemiology
Background:
- Conflicting data exist on the association between bowel habits and colorectal cancer (CRC).
- This prospective study investigated the relationship between bowel movement frequency, constipation, laxative use, and CRC risk.
- Comprehensive data on CRC risk factors were collected, including demographics, family history, endoscopy, lifestyle, and diet.
Discussion:
- No significant association was found between bowel movement frequency or constipation and CRC risk.
- Both low and high use of non-fiber laxatives were associated with an increased CRC risk compared to non-users.
- High use of fiber laxatives was linked to a statistically significant lower risk of CRC compared to non-use.
Key Insights:
- Bowel movement frequency and constipation are not reliable indicators of colorectal cancer risk.
- Non-fiber laxative use is associated with elevated CRC risk.
- Fiber laxative use demonstrates a potential protective effect against colorectal cancer.
Outlook:
- These findings have significant implications for clinical practice, particularly for physicians managing patients with constipation.
- Further research may elucidate the mechanisms behind the differential effects of fiber and non-fiber laxatives on CRC risk.
- This study highlights the importance of considering laxative type in the context of gastrointestinal health and cancer prevention.
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