Transgender athlete Nikki Hiltz has denounced World Athletics' genetic tests for women's competitors as a "slippery slope".

Nikki Hiltz, a transgender and non-binary athlete, has criticized World Athletics' new rules requiring genetic testing for women who want to compete at the World Championships. Hiltz, who uses the gender-neutral pronoun, emphasized that these tests, intended to determine biological sex, set a dangerous precedent and could lead to more invasive techniques in the future. She also suggested that resources be directed to more pressing issues in sport, such as coach violence and doping allegations.