The movement, mostly found in conservative Christianity, that purports to change the sexual orientation of people from same-sex attraction to opposite-sex. It is also referred to as reparative or conversion therapy. It is highly controversial. Several major medical associations have rejected such therapy when it views homosexuality as a mental disorder or sickness, or assumes that homosexuals’ sexual orientation is something that must be changed. Ex-gay should never be used without explaining the term and the controversy associated with it. See gay.