The international sports community is facing renewed controversy as a coalition of ninety advocacy groups has publicly asked the International Olympic Committee (IOC) to abandon reported plans to reintroduce sex testing at the Olympic Games. Representatives from the Sport & Rights Alliance, ILGA World and Humans of Sport, together with dozens of other organizations, issued a joint statement arguing that reviving chromosomal and hormonal screening would represent a backward step for women’s sport and for human rights protections more broadly.
Those backing the letter say the proposed measures would invite invasive procedures — such as cheek swabs, blood sampling and physical examinations — and would resurrect a system that was phased out in the 1990s after being widely criticized for inaccuracy and harm. The groups warn that reimposing such requirements could not only stigmatize athletes but also divert attention and resources away from proven safety and inclusion programs.
What campaigners are warning
Advocacy leaders contend that bringing back chromosomal and hormonal testing would amount to a “catastrophic erosion” of protections for women and girls. Sport & Rights Alliance executive director Andrea Florence described the move as gender policing that undermines both dignity and fairness in sport. The coalition also highlighted a broader concern: as discussions about eligibility intensify, the IOC appears to be simultaneously reducing investment in the safeguarding infrastructure that currently protects women and girls in sport.
Organizers and athletes say the proposed tests would disproportionately affect marginalized groups, including transgender and intersex competitors, and could lead to public humiliation and exclusion. The group’s statement stressed that policies which single out specific bodies for scrutiny revive practices that had been abandoned after decades of scientific, legal and ethical challenges.
Scientific debate and institutional signals
The renewal of interest in sex-testing measures follows comments from IOC leadership suggesting difficult reforms may be on the horizon. IOC president Kirsty Coventry has signaled that changes are being considered, though she has not detailed any specific proposals and an IOC spokesperson clarified that the female category eligibility working group is still discussing the issue and that no decisions have been made. That working group reportedly heard claims from IOC medical and scientific staff that post-pubertal physical advantages persist even after hormone therapy — a view that many peer-reviewed studies dispute.
Contrasting scientific views
Research generally indicates that after a sustained period on hormone therapy, the performance metrics of many transgender women converge with those of cisgender women, but this remains a contested area with ongoing study. Separately, last year World Athletics introduced mandatory genetic testing for some athletes, prompting criticism from scientists like Andrew Sinclair, who warned against reviving proxies such as the SRY gene test as a definitive marker. Critics say the SRY-focused approach is scientifically crude and risks misclassification.
Who would be affected and the wider political context
An updated eligibility policy could affect not only transgender women but also intersex athletes and cisgender women with naturally high testosterone. High-profile cases such as Algerian boxer Imane Khelif — who faced public accusations about her gender identity in 2026 and said she would accept testing to compete — illustrate how policy shifts can quickly become personal and contentious for athletes. Advocates caution that targeted screening risks reopening wounds from earlier eras when athletes were publicly policed and shamed.
The policy discussions are taking place against a charged political backdrop. Actions by national governments — including visa restrictions and pressure on national Olympic committees — have already influenced debates about trans participation in sport. While IOC officials have denied direct coordination with some political leaders, campaigners note that new testing rules would align with efforts by certain administrations to restrict trans athletes’ participation. In parallel, a working group connected to the United Nations Human Rights Council has rebuked the reintroduction of sex testing, warning that such mandates are harmful and risk reinstating discriminatory practices.
As the IOC’s eligibility working group continues its deliberations ahead of the 2028 Los Angeles Games, the coalition of human rights and sports organizations is urging a different path: one that centers evidence-based safeguarding, non-discrimination and the practical protection of athletes’ rights. Their message is a reminder that decisions about who can compete have consequences beyond medals and record books — they shape how sport treats dignity, privacy and equality for all participants.