Our letter, The Reality of Sex, has been published today in the Irish Journal of Medical Science.

@egipam @SwipeWright @davecurtis314

link.springer.com/article/10.100…
‘Human sex is an observable, immutable, and important biological classification; it is a fundamental characteristic of our species, foundational to many biology disciplines, and a major differentiator in medical/health outcomes.’
‘Public discourse around sex increasingly seeks to deny basic facts of human biology.’
‘We call upon authors and editors to resist non-scientific pressures to suppress honest and accurate discussion of these matters, particularly in the field of medicine where diagnosis, prognosis and treatment can depend on a patient’s sex.’
And @suzanne_moore may be interested.

‘One recent example has been the treatment of Suzanne Moore at The Guardian following her attempts to discuss sex-related issues.’
This letter was written before the NEJM Perspective below. Otherwise, we would have, of course, refuted the nonsense statement that ‘sex designations on birth certificates offer no clinical utility.’

nejm.org/doi/full/10.10…
Here is an excellent overview of Nature antics by the equally excellent Andy Lewis @lecanardnoir

quackometer.net/blog/2020/09/t…
Thank you, of course, to the Irish Journal of Medical Science @IrishJMedSci for publishing our letter!

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More from @FondOfBeetles

5 Jan
Some Harper nuggets in here.

1. Queries lack of control for training, hormone status, test conditions. These same limitations would render her own 2015 study inconclusive.
2. Favours training difference to explain retained running advantage, yet argues that the (artefact-riddled, suboptimal) tests of muscular endurance are valid.
A reminder that transmen far surpassed male performance in these muscular endurance tests. Is she saying that transmen would be better than males at team sports?
Read 8 tweets
22 Dec 20
What is absolutely remarkable about the brief is that it is an equally good argument for protecting sports for females. One could almost regurgitate it, replacing just a few words, and submit it in *defence* of HB500.
It appeals to the value - personal, social, academic - of sports participation, the importance thereof for physical and mental well-being.

It’s always worth revisiting the benefits of sport, but HB500 is not to prevent participation. Do they realise this?
They appear to be ignorant of the premise that the wonderful benefits of sports *should be equally available to females*.

In fact, there is a federal law called Title IX to ensure that is the case.
Read 8 tweets
21 Dec 20
This is a very engaging read (and accessible, with minimal Googling of specific terms, to non-philosophers).

Well done, @runthinkwrite
Jon rejects a cost-benefit analysis - the oft-repeated ‘balance’ of safety v fairness v inclusion:

‘What amount of ‘fairness’ ought to be sacrificed for what amount of increase in ‘inclusion’?’
Instead, Jon argues that World Rugby (and other ‘combat’ sports) have a special duty to manage risk:

‘[I]t is particularly incumbent on World Rugby to be alert to increased risk, and to oppose any increased risk that is not an ineliminable part of the essence of the game.’
Read 7 tweets
8 Dec 20
I am delighted to announce that Hilton and Lundberg, 2020 is now published! @TLexercise

‘Transgender Women in the Female Category of Sport: Perspectives on Testosterone Suppression and Performance Advantage’

link.springer.com/article/10.100… Image
Anyone wishing to spot changes from our pre-print:

1. We included a section on pre-pubertal differences (that is, even young boys outperform young girls, thus the performance gap is not solely down to pubertal T).
2. We extended our analysis of CV capacity changes and potential impact on endurance performance (although we had acknowledged a likely effect, we have drilled deeper into mechanism).
Read 8 tweets
8 Dec 20
Here follows my quick first thoughts of Roberts et al., 2020.

I predict this paper will generate much discussion over the coming weeks and months.
The link to the paper is here:

bjsm.bmj.com/content/early/…
The authors studied 46 transwomen (TW) and 29 transmen (TM), majority in active service with the US Air Force.

Highly-active people, albeit not specifically-trained athletes. Mean age 26.6 yrs +/- 5.5 yrs.
Read 30 tweets
7 Dec 20
@MondayStory The words ‘male’ and ‘female’ have scientific definitions, and describe reproductive biology related to ones role in propagating the species (for almost all complex species on earth).
@MondayStory My husband and I, for example, have qualitatively-different roles and, correspondingly, qualitatively-different reproductive anatomy.

The word to describe my body type is ‘female’. The word to describe his is ‘male’.
@MondayStory Now, if you are going to say that both of us can be described, in some context, as ‘female’, then the word ‘female’ no longer describes my reproductive anatomy or any specific medical needs I have, and it decouples humans from standard nomenclature across evolutionary space/time.
Read 5 tweets

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