What does the risk score mean?

The score is a relative risk index, not an absolute lifetime probability. It compares your profile against a baseline of average-risk adults. A higher score means more risk factors are present, not a confirmed diagnosis.

Which risk factors are non-modifiable?

Age, family history of colorectal cancer, and personal history of adenomatous polyps are non-modifiable. All other factors — diet, BMI, smoking, alcohol, and physical activity — can be changed with lifestyle intervention.

At what score should I talk to a doctor?

Anyone with a moderate or high score, or with a first-degree relative who had colorectal cancer or polyps, should discuss screening options with a clinician. Current guidelines (ACS, USPSTF) recommend starting screening at age 45 for average-risk adults.

Does a low score mean I cannot get colorectal cancer?

No. A low score means fewer risk factors are present. Colorectal cancer can still occur in low-risk individuals. Regular screening per age-appropriate guidelines remains important regardless of score.

How accurate is this tool?

This tool uses relative risk weights derived from large epidemiological studies (IARC, ACS, WCRF/AICR meta-analyses). It is for educational purposes and is not a validated clinical risk model. Always consult a healthcare provider for personalised screening recommendations.

Colorectal Cancer Risk Score

Name: Colorectal Cancer Risk Score
Availability: InStock
Author: Nham Vu

Score your colorectal cancer risk across eight evidence-based factors — age, family history, polyp history, diet, BMI, smoking, alcohol, and physical activity.

Risk Factor Inputs

Age

First-degree relative with colorectal cancer or polyps?

Personal history of adenomatous polyps

Red and processed meat intake

Fruit and vegetable intake

BMI

Smoking status

Alcohol intake

Physical activity

Complete all fields to see your relative risk score

Medical Disclaimer: This tool provides a relative risk index for educational purposes only. It is not a validated clinical diagnostic instrument and does not predict absolute cancer risk. Risk weights are based on published epidemiological data (WCRF/AICR, IARC, ACS). Always consult a qualified healthcare provider for personalised screening recommendations.

Summary

Score your colorectal cancer risk across eight evidence-based factors — age, family history, polyp history, diet, BMI, smoking, alcohol, and physical activity.

How it works

Select your age group from the dropdown.
Answer questions about family history of colorectal cancer and personal history of polyps.
Choose your typical red and processed meat intake and fruit/vegetable intake.
Enter your BMI or select your BMI range.
Indicate smoking status, alcohol intake, and physical activity level.
Click Calculate to see your relative risk score and category.

Use cases

Understand which lifestyle factors most influence your colorectal cancer risk.
Prepare for a screening discussion with your gastroenterologist.
Track how lifestyle changes — such as quitting smoking or increasing exercise — affect your risk profile.
Educate patients on modifiable versus non-modifiable colorectal cancer risk factors.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu