I've lost count of how many root canal treatments I've had performed. Not one has caused any issues.
I find it interesting that most websites that say root canals cause cancer or other issues are usually trying to sell crap, like this clown:
Read the article then click on the link at the bottom where they try to sell you $155/month of
https://beatcancer.org/blog-posts/ro...ls-and-cancer/
http://www.Beating-Cancer-Gently.com
BTW the guy selling this crap is actually dead, he died of cancer go figure. Interesting enough his website lives on, using his name within extensively.
Too many fake websites nowadays, you just need to wade through them. I think I'd rather take the advice of a dental professional over that of some internet quack trying to sell crap that will cure my dental woes.