On the Issue of Female Athletics, the IOC Has Shirked Its Duty to Lead

Last week, the Swiss-based International Olympic Committee (IOC) issued updated, non-binding guidance in regard to the inclusion of transgender women and intersex athletes in the female category in elite competitive sports. This IOC Framework on Fairness, Inclusion, and Non-Discrimination on the Basis of Gender Identity and Sex Variations is presented as a means to balance, on the one side, the right of every person to “practice sport without discrimination and in a way that respects their health, safety, and dignity” with, on the other, the need to protect “the credibility of competitive sport” by ensuring “no athlete has an unfair and disproportionate advantage over the rest.” Although the included principles were drafted “with the specific needs of high-level organized sports competitions in mind,” the IOC also urges that they be “promoted and defended at all levels of sport.”

The new framework contains some welcome elements. Most significantly: It affirms that fairness to the female field remains central to the category’s eligibility standards, and that establishing fairness is a matter of “evidence-based,” “robust,” and “peer-reviewed” scientific research. The principles also serve to encourage as much inclusion as possible within evidence-based bounds, a goal we wholeheartedly support. And the framework “replaces and updates” the 2015 IOC Consensus on Sex Reassignment and Hyperandrogenism, disliked by almost all stakeholders, which requires transgender women to suppress testosterone levels in their blood to below 10 nanomoles per liter for 12 months before they are eligible to compete in the female category.

Testosterone is the primary driver of the performance gap between males as a group and females as a group. Starting from the onset of male puberty, testosterone builds the male body in the respects that allow even middling male athletes routinely to outperform elite females. Because of this, the presence of circulating testosterone in the male range throughout one’s puberty and athletic career remains the best and most efficient proxy for the male athletic advantage. However, the IOC’s 2015 policy—which included (1) setting the testosterone cutoff for eligibility for the female category at under 10 nanomoles/liter, several times higher than the levels typically produced by healthy female ovaries; (2) requiring only a year of testosterone suppression, a step that only partially mitigates the advantages accrued over a post-pubescent male lifetime; and (3) suggesting the medicalization of healthy female-identifying athletes who might not otherwise choose to suppress their male-type testosterone production—was widely opposed. The IOC’s decision to turn away from the under-10 rule, as it’s sometimes known, should be seen as a good move whatever side of the debate you’re on.

Nevertheless, the new framework is flawed in at least three respects—flaws that the IOC must address if the organization is to demonstrate real leadership in this area. Until then, as others have emphasized, it will be playing catchup with international sports federations; absent proper IOC guidance, the latter will continue to set eligibility rules on their own initiative.

Firstly, while the IOC was correct to acknowledge that its under-10 rule was not fit for purpose, its vaguely worded replacement—the stipulation that an athlete shall not have an “advantage that disproportionately exceeds other advantages that exist at elite-level competition”—is effectively standardless, making it a litigator’s dream and an administrator’s nightmare. By its terms, every eligibility decision is subject to challenge by an excluded athlete, on the grounds that their governing sports federation can’t or hasn’t established that the performance boost they get from their male sex-linked traits “disproportionately exceeds” the boost that an exceptional female athlete gets from non-sex-linked traits such as flipper-feet or fast-twitch muscle fibers.

Presumably, a federation couldn’t meet this standard in the case of an athlete who only makes the final, but not the podium; indeed, the IOC’s emissaries have acknowledged that a transgender woman or intersex athlete could be excluded only if they are “too good” in comparison with their best competitors. But even then, there is nothing in the IOC document to say what “too good” means so that a federation could establish that it, in fact, has met the standard: Would two percent better than the field be enough? Or does “disproportionately exceed” require more of a difference—say, something closer to the group-based performance gap? Or is this criterion satisfied if the difference, whatever it may be, is enough to account for the margin of victory?  

It’s fine for the IOC to reconsider the use of circulating testosterone as a hard-and-fast standard. In refining sports policy, we should always try to be and do better. But the replacement also has to be fit for purpose, and this one will lead to more questions than answers. It would also serve to rekindle the arguments made on behalf of runner Caster Semenya, which were properly rejected by the Court of Arbitration for Sport in 2019. In these respects, the new standard seems to us like two steps backward rather than one step forward. A far better course of action would be simply to scrap the testosterone-reduction requirement, and update the existing standards in keeping with the best available scientific evidence.

Secondly, in its effort to avoid a political backlash from Movement progressives that would come from talking about biological sex, the IOC has largely omitted essential biological references from its framework. The operative words—male, female, testes, ovaries, androgens, estrogens—appear to be all but verboten. As a result, a plain-text reading of the document suggests that any athlete could be excluded from the female category if she could be shown to have a “disproportionate advantage”—even if she is indisputably female. As written, anyone who is “too good,” for any physical reason, may be cast as unfairly unsettling the playing field.

Given that the Olympic Movement is fuelled by inspiring feats of singular talents, on the women’s side as much as the men’s, this can’t be what the IOC intended. (So no, despite being “better at swimming than anyone is at anything,” because she is biologically female, Katie Ledecky won’t now be at risk of exclusion from women’s events.) Even so, it is telling that the IOC won’t communicate plainly. Leadership in this area must include the courage to speak the words necessary to convey relevant meaning. The IOC’s politically-motivated, obfuscatory doublespeak has other, more principled and committed actors, such as World Athletics head Sebastian Coe, stepping in to fill the void.

Thirdly, while the IOC is correct to insist that eligibility standards—and the decisions on inclusion and exclusion based thereon—must be evidence-based, it’s wrong to make everyone wait for proof of the obvious when it comes to genetic males “consistently” outperforming genetic females in a “specific sport, discipline and event.”

It should not take another sweep of the female podium by XY athletes, as we saw in the women’s 800m event at the Rio Olympics, to convince us that male secondary sex characteristics confer a “disproportionate advantage.” Generalized data and studies already provide abundant evidence that these characteristics are outcome-determinative. If the best females on the planet, such as 200m runner Gabby Thomas and 5,000m runner Letesenbet Gidey, are to be incentivized to continue their pursuit of World and Olympic championships, they have to know that the IOC has their back now; not in a decade, after event-specific data are in confirming what we all already know: In elite competitive sport, biological sex matters. It’s why we have a female category.

The Olympic Movement and its stakeholders have traditionally looked to the IOC for leadership beyond the Games themselves when issues arise that affect the global sports community and the harmonization of regulatory approaches serves everyone’s best interests. Doping, and the related problem of defining eligibility for the female category are two such issues. When the IOC fails to meet its core fiduciary obligations, as it has done in regard to both matters of late, the Movement and its constituents suffer.

Although the issuance of the new IOC framework on gender identity and sex variations may be taken to suggest that the organization is once again interested in a leadership role following a conspicuous, years-long absence from this particular arena, the details make clear that it’s not yet governing in the best interests of the community. The IOC should not set the federations and their athletes up for costly and unnecessary adversarial disputes, especially when resources are scarce, and the stakes for everyone are so high.

This is a companion discussion topic for the original entry at https://quillette.com/2021/11/29/on-the-issue-of-female-athletics-the-ioc-has-shirked-its-duty-to-lead/
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I seem to have arrived late to this particular party so I must beg for my ignorance to be excused, but it seems obvious to me that for athletic purposes we needn’t try to torture the definition of female. Just redefine the two competitive categories biologically as “open” and “XX”. Anyone no matter how they self identify by sex or gender may compete in open, but XX would be limited to individuals bearing two X chromosomes (no matter how they self identify by sex or gender).

This taxonomy captures the essential biological distinction that is relevant to athletic competition. Eligibility could be determined by a simple unambiguous test that avoids getting lost in the weeds of testosterone level thresholds, waiting periods, etc.

Assuming that I can’t be the first person to have proposed this solution, I remain curious as to why it is not considered an option by the authors.


Actually, the advantages begin to accrue far earlier than puberty- indeed, prenatal testosterone or the lack thereof produces identical brain differences for Lesbians and Gays as for Trans- although there is no arguing with the fact that puberty amplifies the inherent male athletic advantage by an order of magnitude. Think about it. When you were in primary (or elementary school), didn’t you find, on average, that boys threw better than girls- or those there would be the rare class member either way who didn’t fit the mould- usually resulting in ridicule if they were the boy and ‘threw like a girl’?

It seems to me that those in the cultural sphere seem to underrate the importance of sports and athletics compared to their own domain, especially in terms of childhood development. Sport has been proven to raise academic outcomes, as the discipline acquired by a rigorous training schedule cross-pollenates into academic areas. It’s also most effective means we’ve culturally found for channelling biological male aggression into healthier pursuits and vital for teaching group dynamics and cooperation.

As usual, my essays are to be found on my Substack, which is free to view and comment:


Too easy! If it’s 95% or 99% of the differences that align with XX vs. XY – and I believe it’s somewhere in the vicinity – there may be a very cases of abnormal genetics, not clearly XX or XY, then we should be able to deal with them on a case by case basis. But the idea that mind must prevail over matter, that you are female if you think you are female, is simply anti-scientific.

And I agree, the definition really should be “open” vs. XX-restricted, because pretty much all the advantage, in athletic strength speed, etc., is tied to the Y.

And we should be able to say, straight-up, that most of the XY’s who want to compete as ‘females’ are really not good allies for ‘females’; they aren’t ‘bullies’, because only a male can be a bull. Or, yes, that;s just what they are, little bulls who can’t find a proper role for themselves.

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