The Daily Wire links to a position paper posted by the respected American College of Pediatricians. It deals with the mental health issues of the transgendered and reports the findings of a review of some 60 studies. See key points from the Abstract.
Both before and after “gender affirming therapy” (GAT), adolescents who have gender-identity incongruence are at higher risk for psychopathology than their peers who identify with their biological sex.There is no long-term evidence that mental health concerns are decreased or alleviated after “gender affirming therapy.”Many individuals who have been treated with “GAT” later regret those interventions and seek to align their gender identity with their sex.Because of the risks of social, medical, and surgical interventions, many European countries are now cautioning against these interventions while encouraging mental health therapy.
With regard to the mental health of transgender-identifying youth, "there is no long-term evidence that current ‘gender affirming’ medication and surgical protocols benefit their mental well-being."