Should I get a colonoscopy?

Our read is that colonoscopies are a well-supported method for preventing colon cancer, which experts state is 100% preventable because every colon cancer originates from a polyp detectable during the procedure.

Experts suggest starting colonoscopies around age 40, or earlier for those with specific risk factors, and recommend a frequency more often than every five to ten years, with some advocating for every one to three years.

While generally considered safe, individuals should weigh their personal risk-reward tradeoff and cost-benefit analysis when determining screening frequency.

Fecal occult blood testing and fecal DNA tests are sensible precursors to colonoscopy for colorectal cancer surveillance. More frequent colonoscopy surveillance may be warranted if polyps are present or if the bowel preparation is incomplete.

• 01Peter Attia and Andrew Huberman (4x) claim that colon cancer is 100% preventable because every colon cancer originates from a polyp that can be detected during a colonoscopy.
• 02Rhonda Patrick (1x) states that colonoscopy possesses 100% sensitivity and very high specificity for detecting colon cancer.
• 03Bryan Johnson (1x) notes that colonoscopy screening is associated with a 52% reduction in colorectal cancer incidence and a 62% reduction in mortality.
• 04Peter Attia (2x) claims that having a colonoscopy every one to two years makes the likelihood of developing colon cancer extremely remote.
• 05Peter Attia and Rhonda Patrick (3x) recommend the age for a first colonoscopy for individuals with no history of colon cancer is 40.
• 06Peter Attia (1x) recommends colonoscopies and upper endoscopies with a frequency of every one to three years.
• 07Peter Attia (6x) plans to get colonoscopies every three years until his life expectancy is too short for them to be relevant.
• 08Rhonda Patrick (1x) states that colonoscopy is a very safe procedure in good hands, with no reported incidents in a study of over 20,000 people.
• 09Peter Attia (1x) claims the benefits of early and frequent colon cancer screening are asymmetric, particularly for individuals who have had colon cancer before age 50.

Peter Attia and Rhonda Patrick (3x) note that risks of colonoscopy include electrolyte abnormalities from bowel preps and sedation. Peter Attia (1x) points out that cancer can develop as soon as six to eight months after a normal colonoscopy. Rhonda Patrick (1x) mentions that standard colonoscopy recommendations have shifted to starting at age 45, with some debate on 5-10 year intervals. Peter Attia (1x) also states that colonoscopy screening every 10 years shows a statistically significant benefit in reducing colon cancer and mortality, but with minimal clinical significance.

New evidence suggesting that the risks of complications from colonoscopies outweigh the benefits, or that alternative screening methods offer comparable or superior efficacy with fewer risks, would change the verdict. Additionally, if experts were to widely agree on less frequent screening intervals without a significant increase in cancer incidence, this could also alter the recommendation.