Obviously it can be. See lobotomization and ECT just for starters (yes, I know ECT is supposed to be better now, don't really buy it)
https://my.clevelandclinic.org/health/treatments/9302-ect-el...
I don't remember what happened after. ECT has that effect.
Evidence in psychological science is much more superficial than in, say, physics. I don't doubt that what you say is reflected in the literature, but I do doubt that it reflects the lived reality of those so treated.