Lia Thomas, the transgender swimmer, suffered a significant setback in her bid to compete against women in the Olympics as she lost a pivotal lawsuit. Thomas, aged 25, had petitioned the Court of Arbitration for Sport to revoke a prohibition on biological males competing in women’s events with the aim of participating in the Games. Her fame surged after she became the first transgender athlete to secure a NCAA college title in 2022. However, she has been prohibited from competing against biological women in international competitions due to revised regulations.

World Aquatics altered its regulations stipulating that transgender women are only eligible to compete in women’s races if they have completed their transition before the age of 12.

Thomas contested these rules, asserting that they should be deemed ‘invalid and unlawful’, as they purportedly contravene the Olympic charter and the World Aquatics convention.

However, the Court of Arbitration for Sport ruled against Thomas, determining that she lacked the entitlement to contest eligibility for participation in World Aquatics competitions.

World Aquatics celebrated the outcome, describing it as a ‘significant advancement in our endeavors to safeguard women’s sports.’

The organization conveyed to the media outlet: ‘World Aquatics remains committed to cultivating an environment that upholds fairness, respect, and equal opportunities for athletes of all genders, and we stand by this commitment.’

Their revised regulations were introduced following Lia Thomas’s victory over Olympic silver medalist Emma Weyant by 1.75 seconds, securing NCAA gold.

In a scientific report supporting their prohibition on individuals who have undergone any portion of male puberty, World Aquatics highlighted that athletes like Thomas retain physical advantages. These advantages encompass endurance, power, speed, strength, and lung capacity, even after undergoing testosterone level reductions through medication.

On Wednesday, the court ruled that Thomas lacked standing to challenge the transgender policy.

The discourse surrounding the participation of transgender athletes in elite sports intensified when Thomas became the first transgender NCAA Division I champion in history. Representing the University of Pennsylvania, Thomas clinched the women’s 500-yard freestyle title in 2022, preceding the World Aquatics ban.

In the final, Thomas surpassed three United States female Olympic silver medalists.

Before beginning hormone replacement therapy in the spring of 2019, Thomas swam for the men’s team at the University of Pennsylvania for three seasons. This prompted assertions that undergoing male puberty provided her with a significant advantage over her female competitors by facilitating the development of larger muscles.

Following her victory, World Aquatics implemented a ban on transgender women, which came three months after Thomas’s win. Meanwhile, US Swimming had already enacted stringent transgender regulations in March 2022, although critics contended that these regulations fell short of imposing a ban.

Reportedly, Thomas initiated legal proceedings at the Court of Arbitration for Sport (CAS) in September, before World Aquatics sought to have the case dismissed due to Thomas’s failure to submit herself to the jurisdiction of USA Swimming.

Under previous guidelines, transgender women could compete in the female category at the international level provided that their testosterone levels remained below five nanomoles per liter over a one-year period.

In January 2023, World Athletics expressed their intention to tighten their policy, with their “preferred option” being to lower testosterone levels to 2.5 nmol/L and extend the transition period to two years.

This proposal elicited significant opposition from female athletes and women’s rights advocates who advocated for a blanket ban on transgender athletes competing against women. They argued that even with reduced testosterone levels, transgender female athletes still possess an inherent biological advantage that renders competition against them unfair.

In the wake of the criticism, members of the World Athletics council acknowledged that there was “little support” for their initial position during a consultation period.

Following suit with swimming’s governing body, FINA, World Athletics also announced a ban on transgender athletes from participating in elite women’s races.

Former Kentucky swimmer Riley Gaines is one of over a dozen college athletes who filed a lawsuit against the NCAA in March.

During the 2022 national championships in Atlanta, Gaines competed against Thomas in the 200-yard final. Despite tying with the transgender swimmer, she was denied a fifth-place trophy.

The federal lawsuit revolves around Thomas and alleges that her victory and involvement in the event violated Title IX, which grants women equal opportunities in sports.

Organized by the Independent Council on Women’s Sports and filed in Georgia, where the 2022 NCAA championships occurred, the lawsuit accuses the NCAA of violating the Fourteenth Amendment by “destroying female safe spaces in women’s locker rooms.”

Plaintiffs argue that the association’s allowance of “naked men possessing full male genitalia to disrobe in front of non-consenting college women” creates situations where unwilling female college athletes unintentionally or reluctantly expose their bodies to males, thus infringing on women’s constitutional right to bodily privacy.

Wheeler, one of the plaintiffs, shared her anxiety about sharing a locker room with Thomas, stating, “Never in my 18-year career had I seen a man changing in the locker rooms. I immediately felt the need to cover myself. I could feel the discomfort of the other girls in there.”