up to 1 out of 1820 Japanese is gender disphoric enough to go against a VERY rigid society that has many, many subtle and not-so-subtle ways of 'punishing' nonconformity.
Compare to the American Psychiatric Association, et. al. numbers of 1 in 30,000...
Compare to Lynn Conway's numbers of around 1 in 500 Americans are disphoric enough to call themselves some form of TG and do something about it (Lynn found evidence that supports 1 in 2,500 American males being post-op MtF, leading her to research and come up with the 1 in 500 number.)
I wonder how many of the 70,000 Japanese are post-op? Buddhism/Shintoism believe the body holy and should not be altered (altared?) unnecessarily.
Karen