“Root canals cause disease elsewhere in the body.”
Current evidence does not support the claim that a properly treated tooth causes chronic systemic illness. Treatment of an infected tooth is different from leaving its infection untreated.
A properly performed root canal is not an established cause of chronic disease elsewhere in the body. It treats infection inside a tooth and can help preserve it. Claims that root-treated teeth must be removed to protect the rest of your body are not supported.
A large, long-followed cohort found no adjusted increase in several major cardiovascular outcomes among people reporting root canal treatment. That does not prove zero risk for every possible outcome.
Can root canal treatment help save an infected tooth?
Treatment cleans and seals the tooth so it can often remain in use. The final restoration, tooth condition and follow-up affect the result.
Safety note: Treatment can fail or a tooth can become reinfected; persistent symptoms need assessment. Reassurance is not a reason to ignore an active dental infection.
Talk to a healthcare professional if: Contact your dentist for worsening or persistent pain or swelling, and attend recommended follow-up.
Treating a dental infection is not the same as creating a hidden toxin source.
Discuss the tooth's actual condition and treatment options rather than removing it solely because of a systemic-disease claim.