Scientology IS a mind altering drug.
There are a lot of dentists who attend practice management seminars that are run by the Church of Scientology. After only a few weeks, their personalities are completely different. They become pushy, opinionated, loudmouthed jerks with delusions of grandeur. (OK, most dentists are like that to begin with, but they get worse!) Usually 90% of the office staff quits or is replaced in the first year. I am a dental hygienist who frequently does temp work in various offices and can easily pick out the offices who follow Scientology. (Just look for the poster of the "tone scale" on the wall.)
Scientology is a wallet altering drug.