Since transsexual women have under gone the medical change they no longer have testosterone production from the testes, additionally they do not have testosterone from the ovaries. Transsexual women have only one source of testosterone which comes from the adrenal glands, whereas cisgender females (females whose self-perception of their gender is the same as their assigned sex) have testosterone production from the ovaries and adrenal glands. In fact studies consistently show that cisgender females have higher testosterone levels than transsexual females.
What does this mean? After transgender individuals have undergone the medically accepted two years of hormonal replacement therapy it takes to change sexes, it is HARDER for transsexual women to attain and maintain the same muscle mass as their cisgender counterparts.
There would still be women who could compete at an equal level and overtake plenty of men.
The differences between men and women in sport depend on a great deal more than current hormone levels and muscle mass. For example, men have a higher ratio of type II to type I muscle fibres, which is associated with improved speed and explosive power, and a heart that is larger relative to body size. It’s not clear to what extent either of these would change after sex-reassignment surgery, or what implications that would have for performance in this case. Because of the bone structure that is developed while still growing, men also have a greater lung capacity and a narrower pelvis, giving a biomechanical advantage – factors which are highly unlikely to be reversed by hormone treatment.
What we can say from this admittedly small sample of data is that Ms. Fox appears to be winning decisively at an age that is significantly older than the average female competitor in or near her weight division. At least as far as the age at which she is successful in competition, Ms. Fox DOES appear to be significantly different than a sample of mixed martial arts fighters who were born female.
The only reason this athlete is a subject of an FPP and has an article in a major publication is because she is trans.
She wants to be able to fight women in MMA. I say no fucking way. I say if you had a dick at one point in time, you also have all the bone structure that comes with having a dick. You have bigger hands, you have bigger shoulder joints. You’re a fucking man. That’s a man, OK? You can’t have… that’s… I don’t care if you don’t have a dick any more.
At the ER, a different doctor disagreed with the first diagnosis but wasn't able to supply his own. Once he learned she was trans and had had reassignment surgery this year, I saw all concern fade out of his face and all "not my problem" flow into it. He told her to go see her usual doctor, because "he's going to be more familiar with that." I can't know what he was thinking, but it felt to me like he considered himself off the hook at that point, and that we should feel stupid for even hoping he'd want to help - like, she's trans, so obviously all of her health problems are going to be trans health problems.
Basically, I rest my case.
I'm going to be honest with you that the way you've chosen to engage with people you mean to educate has been unbecoming of an "educator".
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