I was watching a documentary on tubi via roku (strange new language we have). It was on the consequences of root canals. You have a dead piece of tissue in your mouth which can never be sterilized. So the bacteria remains, producing waste which poisons our systems causing all sorts of health problems. Some handle it better than others. But a lot of issues are caused by this situation. It made me think of getting mine removed.
I've been extraordinarily lucky with my teeth... still have 'em all and never had a root canal. My husband has had a couple of root canals several years ago but never had any ill-effects that we know of.