IOC Adopts New Female Eligibility Policy, Barring Transgender Women from the 2028 Los Angeles Olympic Games

The International Olympic Committee concluded an executive board session in Lausanne, Switzerland, by releasing a formal ten-page policy document establishing new eligibility criteria for women's competition at the Olympic Games. Effective from the 2028 Los Angeles Summer Olympics, participation in all female-category events — spanning both individual and team disciplines — will be restricted to athletes determined to be biological females. The policy marks the IOC's first unified institutional position on gender eligibility, replacing the prior framework under which individual sports federations were left to develop their own rules.

Under the terms of the newly adopted framework, eligibility for the female category will be determined through a one-time SRY gene screening. The SRY gene — located on the Y chromosome and typically associated with male biological development — will serve as the definitive scientific basis for classification. Athletes whose screening returns a positive result will be ineligible to compete in women's events at IOC-sanctioned competitions.

The IOC stated that the policy is designed to "protect fairness, safety and integrity in the female category." Officials further confirmed that the regulation carries no retroactive effect, meaning it will not alter the results of any past competition, and that it does not extend to grassroots or recreational athletic programs.

The accompanying policy document sets out the IOC's scientific basis for the new criteria, drawing on research into the physiological advantages associated with male biological development. According to the document, biological males undergo three distinct testosterone surges across the lifespan: during fetal development in utero, during the mini-puberty of infancy, and again from adolescence into adulthood. The IOC asserts that this hormonal trajectory confers measurable, sustained performance advantages in sports disciplines that rely on strength, power, or endurance — advantages that persist beyond the adolescent developmental period.

The policy's reach extends beyond transgender women athletes. The document also imposes eligibility restrictions on female athletes with medical conditions classified as differences in sex development, or DSD. South African middle-distance runner Caster Semenya — a two-time Olympic gold medalist — is among those cited within the applicable provisions, her competitive eligibility subject to the same screening requirements under the new framework.

IOC President Kirsty Coventry, who assumed office last June as the first woman to lead the organization in its 132-year history, identified the protection of the female competitive category as a priority issue early in her tenure. The matter carried considerable weight during the preceding IOC presidential election, in which all seven candidates addressed the issue and several made explicit pledges to establish a more definitive policy, reflecting the topic's centrality in international sports governance discussions.

Prior to the IOC's action, three elite-level sports — track and field, swimming, and cycling — had already adopted their own regulations barring transgender women who had undergone male puberty from women's competition, leaving the broader Olympic movement without a coherent, overarching standard.

In terms of direct competitive impact, the policy's immediate effect remains difficult to quantify. No athlete assigned male at birth competed in women's events at the 2024 Paris Summer Olympics, and it is not currently established how many, if any, transgender women are competing at the level required to qualify for Olympic selection.

The IOC reiterated that its Olympic Charter enshrines participation in sport as a fundamental human right, and that this principle was taken into consideration throughout the policy development process.

European Editorial Office: John