Tom Cruise is an advocate of the sham known as Scientology...
Along with John Travolta.
There are other celebs that believe this insidious tripe, but those two are the most outspoken. Ordinarily one shouldn't be blacklisted for belonging to a religion, but Scientology is only a religion so they don't have to pay taxes.
Furthermore, they dismiss all psychiatry as "pseudoscience" when in fact their methods are thoroughly just that.
Also, Scientology has an active celebrity recruiting program, in which they use celebrties as figureheads to recruit people(and take their money for bogus "auditing" by severly unqualified individuals who use tin cans (really!) Of course they always find something wrong with you, whereas at least some psychologists won't try to con you out of your money unconditionally.