First off, I just want to say that using the term 'transgendered' instead of transgender is cumbersome and is easily used against us. Just like saying 'coloured person' is offensive instead of saying person of colour. You might think it nitpicky but the 'ed' is suggesting that it was something that was done to you and can be removed. A person of colour can't stop being a person of colour and neither can a transgender person stop being transgender. To further demonstrate how ridiculous it is, if you were gay then you haven't been homosexualized or 'gayed', you're just simply homosexual or gay.
Transgender suggests a state of being whereas transgendered suggests that you were conditioned to be that way or brainwashed or whatever tripe a bigot wants to use against you.
Personally, I believe sex is just as much of a social construct as gender is.
http://tranarchism.com/2010/11/26/not-your-moms-trans-101/"BODIES
Almost every Trans 101 will contain the truism "Sex is between your legs, gender is between your ears."
Gag.
Or they may say "Sex is physical, gender is socially constructed."
This simply isn't true.
Sex is no more an immutable binary than is gender. There are intersex people who are born with non-binary genitalia, as I have already mentioned. There are people with hormonal anomalies. In fact, hormone levels vary wildly within the categories of cis male and cis female. Chromosomes, too, vary. If you thought "XX" and "XY" were the only two possible combinations, you have some serious googling to do. In addition to variations like XXY, XXYY, or X, sometimes cis people find out that they are genetically the "opposite" of what they though they were– that is, a 'typical' cis man can be XX, a 'normal' cis woman can be XY.
The fact is that the concept of binary sex is based on the fallacious idea that multiple sex characteristics are immutable and must always go together, when in fact many of them can be changed, many erased, and many appear independently in different combinations. "Female" in sex binary terms means having breasts, having a vagina, having a womb, not having a lot of body hair, having a high-pitched voice, having lots of estrogen, having a period, having XX chromosomes. "Male" means having a penis, not having breasts, producing sperm, having body hair, having a deep voice, having lots of testosterone, having XY chromosomes. Yet it is possible to isolate, alter, and remove many of these traits. Many of these traits do not always appear together, and before puberty and after menopause, many of them do not apply.
And what about women who get hysterectomies? Or who have had mastectomies for reasons related to breast cancer? Are they not women?
What about a soldier whose dick gets blown off by a mine? Is he not a man?
The fallacies of binding identity to bodies, which are fragile, changeable things, subject to injury, mutilation, maiming, decay and ultimate destruction, should by now be clear.
Sex is as much a social construct as gender, as much subject to self identification, and besides all that, quite easy to modify. Surgical and hormonal techniques are only becoming more sophisticated. If there ever was a need to consider biology destiny, that time is surely past.
The entire concept of "sex" is simply a way of attaching something social– gender– to bodies. This being the case, I believe the most sensible way to look at the question of sex now is this: a male body is a body belonging to a male– that is, someone who identifies as male. A female body is a body belonging to a female– that is, someone who identifies as female. Genderqueer bodies belong to folks who are genderqueer, androgynous bodies belong to androgynes, and so forth, and so on.
This is why I question the value of phrases like "man in a woman's body" or "male to female." Who is to say we ever were the "opposite sex?" Personally I will never again describe myself as "born female." I was born a trans male and my years of confusion were due to being forcefully and repeatedly told that I was something else. This body is not a woman's. It is mine. Neither am I trapped in it.
None of what I say here is to minimize the necessity of surgery. Many trans people do experience body dysphoria. Many of us do seek hormones, surgery, and other body modifications. But the point is that, while such modifications may be necessary for our peace of mind, they are not necessary to make us "real men" or "real women" or "real" whatevers. We're plenty real right now, thank you."