My son has two friends. One fell under the spell of blackpill incels, thinks he is not tall enough even though he's an inch above the mean, wants to break his legs to extend them and get taller, hasn't talked to my son for two years because my son said what his real height was in an online chat. Rumor has it he's taken anabolic steroids (but hasn't done any weighlifting or athletic training.)
The other fell under the spell of a self-described "egg-hatcher" who "aggressively" (his friend's word) worked on him for a year and a half to convince him that his being out of sync with other people was a sign he was trans. I knew him pretty well as an elementary school student and he didn't give any sign of variant gender identity then, although like my son and myself he was always a little 'weird'. (He uses a different pronoun and name at his job but tells us it is OK for us call him 'he' and use his own name so we do.) He's taking a cocktail of drugs that gets prescribed via telemedicine and was telling us about the serious side effects he was suffering: one of these drugs, spironolactone, is primarily a drug that alters your mineral metabolism but has the effect of suppressing testosterone if you take 20x the normal dose. (My doc gives it to me for my blood pressure.) He has insatiable cravings for salt as a result.
I completely believe my transsexual friend from college is for real. I believe my son's transgender friend is making a mistake; I support him as an individual and feel I owe him a lot as a person I knew from a young age but I believe he's a victim of a cult-like movement, as is my son's first friend.
(Note a lot of Christian people are brought into it by their family before they're able to make a choice by their own judgement)