According to the American Psychiatric Association, Gender Dysphoria is a mental illness that they identify and diagnose.
"Gender Transition Poses ‘serious and irreversible damage’ to Kids, Top Psychiatrist Warns"
"A range of scientific literature indicates that reinforcing gender confusion often fails to prevent significant emotional harm up to and including attempted suicide (with or without surgery), because fixating on “gender affirmation” tends to distract from exploring other issues that may be the actual root of a patient’s mental or emotional unrest."
Thousands of children killed by puberty-blocking drugs to push transgenderism:
"In a national study, 40% of transgender adults reported having made a suicide attempt. 92% of these individuals reported having attempted suicide before the age of 25." ~  James, S. E., Herman, J. L., Rankin, S., Keisling, M., Mottet, L., & Anafi, M. (2016). The Report of the 2015 U.S. Transgender Survey. Washington, DC: National Center for Transgender Equality.
"More than half of transgender male teens who participated in the survey reported attempting suicide in their lifetime, while 29.9 percent of transgender female teens said they attempted suicide. Among non-binary youth, 41.8 percent of respondents stated that they had attempted suicide at some point in their lives."