IOC Mandates Biological Sex-Based Eligibility: New "SRY Gene" Policy to Protect Female Category !

The International Olympic Committee (IOC) has officially entered a new era of sports governance with the announcement of its latest policy regarding the protection of the female category. This landmark decision, which will be fully implemented starting with the Los Angeles 2028 Olympic Games, establishes that eligibility for the female category in all Olympic disciplines is strictly limited to biological females.

This shift marks a significant departure from previous frameworks that focused on testosterone suppression or gender identity. Instead, the IOC has grounded its new criteria in the presence or absence of the SRY gene, a specific segment of DNA typically found on the Y chromosome that triggers male physiological development. The committee considers the presence of this gene to be a permanent, lifelong indicator of male sex development, regardless of any subsequent hormone therapy or legal gender recognition.

To enforce these rules, the IOC is introducing a mandatory, once-in-a-lifetime screening process. Athletes will be required to undergo a simple and unintrusive test using a cheek swab, saliva, or blood sample to detect the SRY gene. Those who screen negative will permanently satisfy the eligibility criteria for the female category. Conversely, any athlete with an SRY-positive screen will be ineligible for women’s events, with very narrow exceptions made for specific conditions like Complete Androgen Insensitivity Syndrome (CAIS), where an individual does not benefit from the physical advantages typically associated with testosterone.

IOC President Kirsty Coventry, a two-time Olympic gold medalist herself, championed the policy as a necessity for maintaining the integrity of competition. She noted that in elite sports, where victory is often decided by fractions of a second, the biological advantages inherent in male development such as increased bone density, muscle mass, and lung capacity create an uneven playing field. Coventry emphasized that while every athlete deserves to be treated with dignity, fairness and physical safety must remain the primary priorities for the female category.

The development of this policy was the result of an exhaustive two-year review that concluded in March 2026. A dedicated working group examined the latest scientific and legal developments, while also conducting an extensive consultation process that included over 1,100 athlete survey responses and individual interviews. The findings revealed a clear consensus: the vast majority of female athletes believe that protecting their category requires rules based on biological sex rather than gender identity.

Importantly, the IOC has clarified that this policy applies only to elite-level sanctioned events and does not extend to grassroots or recreational sports. For athletes who do not qualify for the female category under these rules, the IOC encourages their continued participation in male, mixed, or open classifications. To support those impacted, the committee has mandated that International Federations provide access to mental health resources, counseling, and expert medical advice, ensuring that the transition to these new standards is handled with the highest level of respect and confidentiality.

Esther Otto