People are researching it and the evidence shows that due to the bigotry, prejudice and abuse they face at home, at school and at work results in depression that leads to suicides, substance abuse as they look to escape the hatred they face.Trans folk tend to kill themselves at astonishing rates , before and even taxpayer subsidised body alteration.
LGBTQP relationships also tend to have loads of abuse , which never seems to make it to print.
Seems that those who care would not be grandstanding for politics but actually getting down to the reasons for these things so we can fix them.
Edit - i even forgot about the huge amounts of substance abuse prevalent in the LGBTQ community , again nobody is researching this or its causes/effects.
Here are links to research on the subject -
Google Scholar
A good summary from Psychology Today, which cites medical studies on the subject and the leading cause for all the depression, suicide and substance abuse results from the way they are treated.
Why Transgender People Experience More Mental Health Issues
The high cost of shame and stigma manifests itself in the mental health of transgender people.