By Professor Robert J Romano, St John’s University, Senior Writer
The recent decision by the International Olympic Committee (IOC) to ban all transgender women from competing in female sporting events denotes a significant, albeit controversial policy shift.[4] Its new policy entitled Policy on the Protection of the Female (Women’s) Category in Olympic Sport and Guiding Considerations for International Federations and Sports Governing Bodies has been presented as a way to preserve both fairness and safety in women’s sport, but in reality it highlights the tensions between science, human rights, and politics, especially as we inch closer to LA 2028 where the Trump administration has vilified and scapegoated transgender athletes for political purposes.
The current policy, however, needs to be examined through the lens of the IOC’s troubled history when attempting to regulate sex and gender in sport. During the late 1960s, the IOC first introduced mandatory sex verification tests for female athletes (note – not for male athletes), using crude biological markers such as Barr body testing, a method that looks for an inactive second X chromosome. The Bar system along with other similar systems methods were widely criticized as scientifically flawed and discriminatory, producing false positives and disproportionately targeting women who did not conform to the Western “norms” of femininity.
Myron Genel, M.D., a pediatric endocrinologist at the Yale School of Medicine and co-author of a commentary on gender testing published in The Journal of the American Medical Association stated that “[T]hese tests fail to exclude all potential impostors, are discriminatory against women with disorders of sexual development, and may have shattering consequences for athletes who ‘fail’ a test.”[5] The only thing good about the Barr method was that it eliminated the need for the subjective and highly controversial “nude parades” that were previously used when determining female athletic eligibility.
By the late 1990s, the IOC abandoned blanket sex testing in favor of suspicion-based evaluations, but in 2003 the IOC implemented “The Stockholm Consensus”, a policy wherein athletes must undergo sex reassignment surgery in order to be eligible for competition maintaining that “Surgical anatomical changes must be completed, including external genitalia changes and gonadectomy.”[6]
A significant change occurred in 2015, when the IOC adopted more inclusive guidelines for transgender athletes. Rather than requiring surgery or legal gender recognition, transgender women could compete in the female category if their testosterone levels remained below a specified threshold for a period of 12 months. This policy was interpreted as aligning sport with evolving human rights norms, emphasizing participation and inclusion over rigid biological definitions.
The IOC modified its policy again in 2021, issuing a non-binding framework centered on principles such as non-discrimination, bodily autonomy, and the “no presumption of advantage.” More importantly, this framework delegated decision-making to individual sports federations, acknowledging the complexity and variability of different athletic disciplines. The IOC’s 2026
policy marks a decisive break from this trajectory. Under the new rules, eligibility for women’s events is restricted to “biological females,” determined through a one-time genetic screening for the SRY gene (SRY Test), a marker typically associated with the Y chromosome.
The policy reads that “Eligibility for the female category is to be determined in the first instance by SRY gene screening to detect the absence or presence of the SRY gene. Athletes who screen negative for the SRY gene permanently satisfy this policy’s eligibility criteria for competition in the female category. Unless there is a reason to believe that a negative reading is in error, this will be a once-in-a-lifetime test.” (Yes, you read that correctly). This effectively excludes transgender women and possibly additional athletes with differences of sex development (DSD) from competing in the female category at the Olympic level.
Those who support banning transgender athletes argue that individuals who have achieved male puberty and then transition retain physiological advantages such as bone density, muscle mass, and cardiovascular capacity that cannot be fully mitigated by hormone therapy. Others, however, contend that the scientific evidence is far from settled, with most studies suggesting that hormone suppression significantly reduces these advantages.
The IOC’s reliance on genetic testing has drawn particularly sharp criticism. The SRY gene test, previously abandoned due to concerns over reliability and fairness, is now being reintroduced as a central criterion for eligibility. Experts warn that such testing risks both false positives and the exclusion of athletes whose biological variations do not fit binary categories. In fact, the scientist who discovered the SRY gene test says it should not be used in such a fashion. Andrew Sinclair, the deputy director of the Murdoch Children’s Research Institute in Melbourne, discovered the SRY gene in the 1990s and has continued to work on gonad development for the past 30-plus years. Professor Sinclair has publicly stated that “The SRY gene alone should not determine who can compete in women’s sport and that this policy is based on the overly simplistic idea that the presence of the SRY gene alone is equivalent to being male. Male sex is much more complex, involving multiple genes other than SRY in developmental pathways as well as hormones.”[7]
Moreover, critics of the IOC’s new position argue that the policy conflates sex, gender identity, and athletic performance in overly simplistic ways. Sport is already shaped by a wide range of biological inequalities, height, lung capacity, and genetic predispositions, yet only certain variations are regulated. This raises a fundamental question: why are some natural advantages tolerated while others are deemed unfair? Human rights organizations have gone further, describing the policy as discriminatory and are concerned that it is a violation of privacy, bodily autonomy, and dignity, particularly given the history of the IOC’s gender policing in women’s sport.
The IOC’s 2026 ban on transgender participation in women’s events is not an isolated policy shift but the latest chapter in a century-long struggle over gender, science, and fairness in sport. While the organization frames its decision as evidence-based and necessary, the move raises profound ethical, scientific, and political questions. Ultimately, the controversy reflects a deeper dilemma that sport has yet to resolve how to balance the ideal of fair competition with the equally important principles of inclusion and human rights. The IOC’s answer, at least for now, tilts decisively toward Trumpism and exclusion.
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https://www.olympics.com/ioc/news/international-olympic-committee-announces-new-policy-on-the-protection-of-the-female-women-s-category-in-olympic-sport ↑
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https://medicine.yale.edu/news-article/decision-to-abolish-gender-testing-at-sydney-olympics-supported-by-yale-physician/ ↑
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https://www.transathlete.com/olympics ↑
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https://www.abc.net.au/news/2026-03-31/scientist-says-ioc-shouldnt-use-sry-test-transgender-athletes/106514954 ↑
