The legal landscape for transgender youth shifted significantly in 2023. Nearly 500 pieces of legislation restricting the rights of LGBTQ people were introduced in state legislatures this year. This study from the UCLA School of Law estimates the number of transgender teenagers affected by five types of laws and policies from the 2023 legislative session—gender-affirming care bans, bans on sports participation, bathroom bans, gender-affirming care “shield” laws, and conversion therapy bans.