Top pediatric physicians admit that puberty blockers are not as “reversible” and “noninvasive” as “the media makes it out to be,” according to a video obtained by the Daily Caller News Foundation.

During an educational session conducted by the World Professional Association for Transgender Health, a medical organization, prominent physicians acknowledged that puberty blockers can have adverse side effects for minors, including infertility, bone loss, and brain development disruptions, the DCNF reported.

The organization supports so-called “gender-affirming care” for children, including prescribing puberty suppression drugs, cross-sex hormones, and gender-mutilating surgeries, according to its Standards of Care. However, a September 2022 educational session obtained by the news outlet revealed that physicians with the organization admit that these interventions are not entirely harmless for minors.

During a session titled “Foundations in Gender Affirming Hormone Therapy: Adults and Adolescents,” Dr. Daniel Metzger, a WPATH-certified pediatric endocrinologist, expressed concerns about puberty blockers disrupting a child’s calcium stores, the DCNF reported.