Most people at average risk should get a colonoscopy every 10 years starting at age 45 or 50. If there is an increased risk due to family history or previous findings like polyps, screenings may start earlier and be done more frequently, sometimes every 3 to 5 years depending on individual risk factors. Screening might stop around age 75 to 80 depending on overall health.

Frequency for average risk

• Every 10 years starting at age 45 or 50 for healthy individuals with no symptoms or family history.

Increased risk factors

• Those with family history of colorectal cancer, especially with relatives diagnosed before age 60, or those with personal history of polyps or bowel disease, may start earlier (around 40-45 years) and have colonoscopies every 3 to 5 years.

Older age considerations

• Colonoscopy screenings may be stopped by age 75-80 when risks outweigh benefits.

Summary

Risk Level| Starting Age| Frequency
---|---|---
Average risk| 45-50| Every 10 years
Family history / high risk| 40-45| Every 3-5 years
Older adults (75-80+)| Screening may stop based on health| -

This schedule ensures early detection or prevention of colorectal cancer through timely screening.