This is one debate where I am open to being persuaded providing someone can give me a brilliant argument as to who transgenderism is not a mental health issue.
According to the DSM (if memory serves me correctly) transgenderism is only a mental health issue if the individual is experiencing extreme distress, depression, etc. This to me seems like a cop-out. If someone believes or feels that they are a different sex than what they are then I think this also meets the criteria for the mental health issue. Wouldn't it make more sense for the DSM to find ways in which to help convince the individual that they are the sex that they are biologically and help them realize that with conviction?
It seems like the DSM is taken the view that because they pose no harm to themselves or others then let them do and think/believe whatever they want.
Over to you.
The unexamined thought is not worth thinking.