Thread by @KirstiMiller30

We only have to look at our personal experience of the people around us to realise that the generalisations used in arguments against trans women & girl athletes are completely unfounded.

https://twitter.com/kirstimiller30/status/1445748702929317900

Arguments calling for the blanket@exclusion of trans* or intersex people on the grounds of fair competition are based upon the following factors;
1-all those assigned as male are better than all those assigned as female at birth

2-medical transition does not affect sporting ability

3-Some may attempt to cheat if the system is changed.

Furthermore, a number of different factors contribute to variation in sporting ability including economic background and environment. None of these factors are regulated in the same way as gender categories.

Effects of Medical Transition
Cross-sex hormone administration to trans* individuals results in testosterone/oestrogen levels, “haemoglobin, subcutaneous fat content and muscle cross-sectional areas similar to those values in [cisgender] men and women.

In addition, what counts as a competitive advantage shifts dramatically depending on the sport. What is an advantage in one context may be a disadvantage in another. Despite women generally being lighter than men, total body weight increases in response to estrogen and

anti- androgen treatment in transitioned women, despite & a decrease in muscle mass & hemoglobin levels. Thus, for sporting events where an athlete would have to carry their own body weight (i.e. running) an
increase in body weight with less muscle mass & less hemoglobin

levels following estrogen and antiandrogen treatment may is massively detrimental to
performance.

Fears that boys or men will pretend to be female to compete on a girls’ or women’s team are unwarranted given that in the entire 50 plus years history of “sex verification” procedures in international sport competitions, no instances of such “fraud” have been revealed.

The culture surrounding sports is still deeply transphobic, even today. The effects of this are clearly seen with many being driven away from sport; the thought of the pressure completely closes off the idea of participating.

Some like I have suffered horrific transphobic discrimination firsthand; others have experienced social transphobia/homophobia/queerphobia especially from sports such as AFL and @WorldRugby or others have witnessed indirect transphobia eg rumours and gossip.

Most of these transphobic views are built upon the previous points I have made, however very little is being done to combat them; Sporting bodies neet to show some sort of initiative to simply say transphobia [this] is not cool and it is not to be tolerated.

To combat this culture we need to have clear policies that promote inclusion and that are not based upon myths. Sport should be accepting of all, though it is clear that the current culture is designed to unjustly target many who just wish to participate.

The important question isn't do trans women have advantages? What really matters is can trans & cis women compete against one another in meaningful competition?

There's no absolutely no indication that trans women are anywhere close to taking over women's sport, it's not happening now. It's not likely to happen anytime in the future.

Are there any potential disadvantages for trans women athletes?
Absolutely. Trans women have frames, which are now being powered by reduced muscle mass and reduced aerobic capacity and that leads to disadvantages in things like quickness, recovery endurance,

And many things that might not be quite as obvious as seeing somebody bigger such as acclerated bone loss and premature abnormal aging, large drop in hematocrite levels, cardio vascular health, decreasing primary endocrine function, permanent androgen receptor atrophy,

increased vulnerability to coronary heart disease, prone to joint health and injuries, elevated insulin levels and insulin resistence, elevated core body temperature during exercise, reduced stamina, fatigue, delayed recovery, lethargy and diabetes.

HYPOGONADISM AND THE BIOLOGICAL HEALTH IMPACTS XY TRANSGENDER FEMALE (NON-SURGICAL)  
Hypogonadism another term for abnormally low testosterone production in the gonads (T<10nmol) and concomitant symptoms suggesting androgen deficiency.

ANDROGEN DEPRIVATION BIOLOGICAL HEALTH IMPACTS XY TRANSITIONED F (POST OPERATIVE)
Complete androgen deprivation is another term for non-existent production of the sole primary hormone required testosterone, due to a bilateral orchiectomy removal of the gonads to create the vulva.

Though XY chromosomes, requires testosterone levels to be (T>14nmol or higher) to be healthy and relieved of symptons of complete androgen deficiency.

Transitioned women, do not retain gonads responsible for hormone production, the circulation and communications loop of the endocrine system is disrupted, organs, glands are no longer linked and are acting independently on their own.

The symptoms of CAD result in decreases in patient quality of life long-term.  Common physiologial contraindications: loss of sexual and mental health, complete muscle atrophy, increase in subcutaneous fat levels, acclerated bone loss, premature abnormal aging,

large drop in hematocrite levels, cardio vascular health, ceasing of primary endocrine function and protein|androgen synthesis, permanent androgen receptor atrophy, increased vulnerability to coronary heart disease,

prone to joint health and injuries, elevated insulin levels and insulin resistence, elevated core body temperature during exercise, reduced stamina, delayed recovery, lethargy & diabetes.

Take away the words transgender athlete and replace it with male athlete. A male athlete that suffers from hypogonadism or androgen deprivation is granted a TUE for synthetic T under @wada_ama code. It the T treatment is withheld the male athlete would experience the...

exact same negative consequences to health that trans women athletes and 46 XY athletes like Caster experience when they are forced to compete with unhealthy T levels eg loss of sexual and mental health, complete muscle atrophy, increase in subcutaneous fat levels,

acclerated bone loss, premature abnormal aging, large drop in hematocrite levels, cardio vascular health, ceasing of primary endocrine function and protein|androgen synthesis, permanent androgen receptor atrophy,

increased vulnerability to coronary heart disease, prone to joint health and injuries, elevated insulin levels and insulin resistence, elevated core body temperature during exercise, reduced stamina, delayed recovery, lethargy & diabetes.