The word "Debian" was formed as a portmanteau of the first name of his then-girlfriend (later ex-wife) Debra Lynn and his own first name

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What is the medical consensus on the minimal age for deciding to transition? I get that transitioning pre puberty might be preferred, but I also believe that there are some insane parents that "wants a girl no matter what" and ask the doctor to start transitioning right after infancy... What are the legal limits, currently, in the US?