Then please do a google search on "hypothalamus transsexual" to find all the medical research that has been done in that particular field. You may find it enlightening.
I don't doubt that doctors have determined that there is a syndrome called 'hypothalamus transsexuality", but to inflict this nutty stuff on a fourth grader is abuse.
Brain Differences:
Theory: The brains of TV's and TS's are different from non-transgendered people.
Argument for: The brains of men and women are actually very different in the way they work. It is now thought that transsexual brains are also different in makeup to those of 'normal' men. They are not the same as those of females, but do have many similarities. They are in effect somewhere between the two. To say that transsexual people have the brain of women and the body of men would be wrong, but it is not a million miles from the truth. Recent research shows a marked difference between the hypothalamus of M2F transsexual people and other males. They are much more like the hypothalamus of women. Those of gay and heterosexual men are identical.
Argument against: There is very little argument against this theory, as post mortems have backed it up. There have, however, only been a few such post-mortems and I do not know whether they were carried out on pre or postoperative TS's.
1 - Very little research. 2 - M2F transgender... nothing on F2M transgender.