This popped up on my twitter feed today - it's a really interesting read (even though from 2015)
www.thepublicdiscourse.com/2015/06/15145/
For forty years as the University Distinguished Service Professor of Psychiatry at Johns Hopkins Medical School—twenty-six of which were also spent as Psychiatrist in Chief of Johns Hopkins Hospital—I’ve been studying people who claim to be transgender.
A rare issue of a few men—both homosexual and heterosexual men, including some who sought sex-change surgery because they were erotically aroused by the thought or image of themselves as women—has spread to include women as well as men. Even young boys and girls have begun to present themselves as of the opposite sex. Over the last ten or fifteen years, this phenomenon has increased in prevalence, seemingly exponentially. Now, almost everyone has heard of or met such a person.
But gird your loins if you would confront this matter. Hell hath no fury like a vested interest masquerading as a moral principle.