A matter of months ago, the NHS were advising that puberty blockers were reversible.
It is not unreasonable for the average person to take this on authority and to share this as an authority view.
It is not unreasonable for medics, scientists and other relevant experts to question the NHS advice on puberty blockers, and to draw attention to inaccuracies or misrepresentations.
It is not unreasonable for the NHS to alter or update their advice on puberty blockers after a fuller assessment of the evidence laid before them.
It is not unreasonable for those people who rely on the NHS as an authority opinion to remove/alter what they may now consider outdated, inaccurate and/or potentially harmful shared information to reflect more recent medical advice.
I am not blind to the politics and motivations here. And I think it's reasonable to question why people we might expect to "know better" (i.e. to have conducted their own research into puberty blockers) maintained a "party line".
I am simply pointing out that there are many more who simply quoted the NHS medical advice. And that is a perfectly reasonable thing to do.
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Birds use genetic sex determination, just like humans.
The "make male" gene for humans is called SRY, and it lives on the Y chromosome.
If you have functional SRY and its downstream transcriptional storm, you will make testes and make male.
Birds differ. Their "make male" gene is called DMRT1.
It pretty much works like SRY, in that it's immediate downstream target is the parallel gene in both humans and parrots, and the ensuing transcriptional storm triggers testes development (testes being male, of course).
"This model of estradiol’s role in improving resistance to wound sepsis predicts at least four “sexes” across two treatment groups: females who are in the proestrus phase, females who are in the diestrus phase, females who are postmenopausal, and males."
This is Sarah Richardson, of the Fuentes review.
Four "sexes", three of them female and the other male. JFC.
Apparently-female athletes who test positive for SRY will have a consultation with WA, with a view to medical assessment to better understand any medical conditions (DSDs) they have.
It is this diagnosis that will determine eligibility (or not).
After a primer on sex development, Sinclair tries a gotcha.
Describing Swyer Syndrome and CAIS, he argues these athletes would be unfairly excluded.
But WA makes it clear that CAIS is exempt from exclusion. It’s in both the policy and the press release. I doubt Swyer would be excluded either.
Five years ago, I gave a speech comparing sex denialism to creationism.
At the time, my partner-in-crime, Colin Wright, and I were near-lone academic voices willing to stand up and say “Biology! We have a problem!”
@SwipeWright
Reflecting, back in 2020, on that state of affairs:
“[That] there are two sexes, male and female is apparently something that biologists do not think needs to be said.
I think they are wrong.”
Since then, biologists with far more authority than an unknown developmental biologist who was trying to work out how nerves navigate over muscles and an unknown evolutionary biologist who was studying what makes insects mad have spoken up.