Transsexuals are four times more likely than the average person to be infected with HIV. Source: http://www.nbcnews.com/id/40279043/ns/health-health_care/
About 88% of children who have gender dysphoria do not hold those beliefs when they grow older. Source: http://www.npr.org/templates/story/story.php?storyId=90229789
Only 12% of boys who believe they are transsexuals still believe so when they are older. Source: http://www.ncbi.nlm.nih.gov/pubmed/18194003
MRI scans indicate that MtF transsexuals are either men aroused by the thought of possessing female genitalia or homosexuals who want to seduce straight men. Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3180619/
41% of transsexuals have tried and failed to commit suicide. Source: http://www.nbcnews.com/id/40279043/ns/health-health_care/
Transsexuals who undergo sex reassignment surgery are more likely to commit suicide. Source: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0016885