The share of young Americans who identify as having various nontraditional sexualities or “gender identities” is declining, an absolute shock for LGBT activists who did not understand that those increases were being driven by social contagion.

The Centers for Disease Control and Prevention’s Youth Risk Survey of high schoolers has recorded a drop in “LGB” identification among ninth through 12th graders. That drop is driven by a sizable decline in the share of high school girls who identify as bisexual, including a decline from a peak of 26% in 2021 to 13% in 2025 among female high school freshmen.