Colorado voters will decide in November if the state should ban gender-affirming surgeries for minors. Proposition 135 would prohibit health care professionals from knowingly performing any surgery on a minor “for the purpose of altering biological sex characteristics.” The measure would also prohibit state and federal funding, including Medicaid, from being used to pay for gender-affirming procedures.
Proposition 135 is one of two ballot measures seeking to restrict the rights of transgender children that are backed by Protect Kids Colorado, an organization led by prominent anti-LGBTQ+ activist Erin Lee. Lee did not respond before publication to Newsline’s questions about the goals of the measure and how it could prohibit non-transgender children from receiving surgeries related to gender.
The other measure would ban transgender youth from playing on gendered sports teams. Families Not Politics, which opposes Proposition 1335, is led by LGBTQ+ advocacy organizations including One Colorado, Rocky Mountain Equality, the Transgender Law Center and Inside Out Youth Services, as well as Planned Parenthood of the Rocky Mountains and Cobalt, an abortion-rights organization. Dozens of other organizations from around the state and Democratic elected officials also oppose the measure.
Jax Gonzalez, political director at One Colorado, said providers are afraid the measure would make the provision of care too complex for them to know what is permitted. The meaning of language in the measure related to a minor’s “perception of sex or gender,” for example, is unclear. “All of us have gender and have lots of ideas about that, and so, does that mean that if a patient brings up a conversation about their own gender, regardless of their general identity, does that mean that that provider can’t treat them anymore?” said Gonzalez, who is trans.
Few trans students play school sports in Colorado. A 2026 ballot measure would ban them. Gender-affirming surgeries for minors happen very rarely, Gonzalez said, and only in extreme cases where the affected minor is experiencing suicidality. They said surgery is only discussed as an option “after years of therapy and consultation with the family” as well as several doctors and medical experts.
A 2024 Harvard study found that higher rates of cisgender people, both minors and adults, received the surgeries that transgender and gender diverse individuals receive for gender-affirming purposes. For example, it found that 97% of breast reduction procedures performed on teenagers were for cisgender boys. The study reviewed insurance claim data from 2019, and found that no trans youth age 12 and under received surgeries as part of their gender-affirming care. This aligns with medical guidance that says transgender youth should not receive medical or surgical intervention prior to puberty.
For teenagers age 15-17, the rate of gender-affirming surgeries was 2.1 per 100,000 transgender or gender-diverse individuals. Providers weigh in The Colorado Medical Society’s board voted to oppose Proposition 135 because it would interfere with the independent clinical decisions physicians make based on the needs of each patient, according to board president Dr. Sean Pauzauskie. The nonprofit organization is the largest organization of physicians in Colorado, including more than 6,000 members in various healthcare specialties.
“Our CMS members have diverse political views, but share one core principle, and that’s that medical decisions belong in the exam room,” Pauzauskie said. The board’s opposition is based solely on the fact that it would interfere with a medical provider’s ability to use their own medical judgement, not because the measure relates to gender-affirming care, Pauzauskie said.
