"Policies implemented by international federations and national governing bodies, along with national legislation in some countries, allow males who identify as women to compete in female sports categories. 28 In other cases, this practice is not explicitly prohibited and is thus tolerated in practice. The replacement of the female sports category with a mixed-sex category has resulted in an increasing number of female athletes losing opportunities, including medals, when competing against males. According to information received, by 30 March 2024, over 600 female athletes in more than 400 competitions have lost more than 890 medals in 29 different sports."

https://documents.un.org/doc/undoc/gen/n24/249/94/pdf/n2424994.pdf