I don't know what kind of evidence shows 70,000 unless there's cave paintings & even then, the interpretation is wide open. I realize it goes back 100's of years. However, there's no data on them committing suicide even though there's records of all sorts of other things people of all types did back then. Why not the suicide, misery, depression related to feeling in the wrong body? But in the past few generations the American Psych Assoc. has addressed the issue, creating a very profitable business in the medical industry: sex reassignment surgery, nowadays called gender reassignment treatment. Huge business, and the APA has these people thinking they have a "condition" that can only be treated with invasive surgeries & hormones. We now have a new paradigm. I swear that my brain is bathed in testosterone. I've always been naturally stronger than most women (without weight training), more aggressive, tougher. But I'll be danged if I'm going to have medical reassignments & change my name