The International Olympic Committee (IOC) has set the sporting world abuzz with a landmark ruling that will reshape women’s competition at the Olympic Games from 2028 onward. In a decision announced on March 26, 2026, the IOC declared that eligibility for the women’s category at future Olympics will be strictly limited to biological females, determined by a one-time gene-screening test for the presence of the SRY gene located on the Y chromosome. This sweeping policy, set to take effect at the Los Angeles 2028 Games, will exclude transgender women and certain athletes with differences in sexual development (DSD) who have experienced male puberty from competing in female events.
This move comes after years of heated debate and controversy surrounding gender eligibility in elite sports, culminating in high-profile cases at recent Olympics. The IOC’s new ruling, the result of an 18-month consultation led by president Kirsty Coventry, is touted as a measure to "ensure fairness and protect safety, particularly in contact sports." Coventry, who assumed the IOC presidency in 2025, emphasized the scientific foundation of the decision, stating, “At the Olympic Games, even the smallest margins can be the difference between victory and defeat. So it is absolutely clear that it would not be fair for biological males to compete in the female category. In addition, in some sports it would simply not be safe.”
The gene-screening test, which will be administered just once in an athlete’s career, involves a simple saliva, cheek swab, or blood sample. The IOC insists this method is minimally intrusive compared to other possible sex testing procedures. Any athlete found to possess the SRY gene will be deemed ineligible for the women’s category, with rare exceptions for those diagnosed with complete androgen insensitivity syndrome (CAIS) or other DSDs that negate the performance-enhancing effects of testosterone.
“Based on scientific evidence, the IOC considers that the presence of the SRY gene is fixed throughout life and represents highly accurate evidence that an athlete has experienced male sex development,” the committee explained in its official statement. The IOC further clarified, “With the rare exception of athletes with a diagnosis of complete androgen insensitivity syndrome (CAIS) or other rare differences/disorders in sex development (DSDs) who do not benefit from the anabolic and/or performance-enhancing effects of testosterone, no athlete with an SRY-positive screen is eligible for competition in the female category at an IOC event.”
The ruling is not retroactive and will not affect grassroots or amateur sports, meaning it applies solely to elite athletes aiming for the Olympic stage. Nevertheless, the IOC’s determination has already sparked intense debate across the global sporting community, with supporters hailing it as a necessary step to preserve fairness in women’s events and critics warning of potential exclusion and harm to athletes with rare biological differences.
Gender eligibility has been a flashpoint at recent Games, most notably during the 2024 Paris Olympics. Algerian boxer Imane Khelif became a focal point of discussion after she was disqualified from the 2023 World Championships for allegedly failing gender eligibility tests, only to be cleared by the IOC to compete in Paris—where she captured gold in the women’s welterweight division. Khelif, who is not transgender, revealed in a 2026 interview with L’Equipe that she possesses the SRY gene and has taken hormone treatments to lower her testosterone levels for competition. “We all have different genetics, different hormone levels. I’m not transgender. My difference is natural. This is who I am. I haven’t done anything to change the way nature made me. That’s why I’m not afraid,” Khelif stated. She also expressed her willingness to comply with any required testing: “Of course, I would accept doing anything I’m required to do to participate in competitions. They should protect women, but they need to pay attention that while protecting women, they shouldn’t hurt other women.”
Khelif’s case is far from isolated. Taiwanese boxer Lin Yu-ting, who won gold in Paris after allegedly failing a gender eligibility test the previous year, also found herself at the center of the eligibility debate. The International Boxing Association (IBA), which oversaw the 2023 World Championships where both Khelif and Lin were disqualified, was later expelled from the Olympic movement over governance concerns. Such controversies have fueled calls for a more uniform and transparent approach to gender eligibility, which the IOC says this new policy provides.
The IOC’s decision aligns with recent trends in international sport, as federations like World Athletics and World Rugby have introduced stricter regulations on transgender athletes and those with DSD. World Athletics, for instance, made it compulsory in 2025 for female athletes to undergo SRY gene testing to compete in major championships or Diamond League events. World Rugby went even further in 2020, banning transgender women from elite and international competition. However, not all sports have followed suit; the Football Association in England, for example, refused to implement a similar ban in 2025.
Some prominent voices in women’s sport have welcomed the IOC’s move. Former British Olympic swimmer Sharron Davies and sports presenter Laura Woods publicly applauded the decision, while others, like Davies, have called for the policy to be extended to grassroots and recreational levels. Meanwhile, more than 80 human rights and advocacy groups have urged the IOC to reconsider mandatory sex testing, arguing it risks stigmatizing and excluding athletes with rare biological variations. These appeals have so far been rejected by the Olympic leadership.
The policy is underpinned by scientific research indicating that male chromosomes confer advantages in sports that rely on strength, power, or endurance. The IOC maintains, “The scientific evidence is very clear: male chromosomes give performance advantages in sports that rely on strength, power or endurance.” The committee also stresses that every athlete must be treated with dignity and respect, with education, counseling, and expert medical advice available throughout the screening process.
While the ruling has drawn praise from those who see it as a victory for fairness, it has also reignited debate about the balance between inclusion and competitive equity. The cost of the SRY gene test, approximately £185, has prompted questions about who will bear the financial burden—an issue yet to be clarified by the IOC.
Looking back, the Olympic stage has seen other notable cases involving gender and eligibility. South African runner Caster Semenya, assigned female at birth but with higher-than-normal testosterone levels and an XY chromosome pattern, won gold in the women’s 800m at both the 2012 London and 2016 Rio Games. Former British middle-distance runner Lynsey Sharp reflected on the impact of such cases, telling Sky News, “Sometimes I look back and think I could have had an Olympic medal, but I gave it my all that day and that was the rules at the time.”
With the Los Angeles 2028 Olympics still more than two years away, the IOC’s new policy has set the stage for ongoing debate and adaptation across the sports world. As athletes, coaches, and federations adjust to the new rules, all eyes will be on how these changes play out on the world’s biggest sporting stage. For now, the IOC stands firm: the women’s Olympic category will be reserved for those who meet its newly defined, scientifically backed criteria.