The Australian federal government has made its move. Health Minister Mark Butler has formally asked the National Health and Medical Research Council (NHMRC) to urgently provide advice on the safety of puberty blockers for minors with gender dysphoria. That advice is intended to form the basis for new nationwide treatment standards — a process expected to run until 2028. Until then, the 2018 guideline from Melbourne’s Royal Children’s Hospital (RCH), since only slightly updated to version 1.5, will remain the de facto national standard.
What exactly the minister is asking for
Butler’s request uses unusually direct language for a minister who generally avoids getting involved in medical matters. This is not a non-binding review, but a request for the NHMRC to assess whether current practice remains defensible and then develop national standards to replace Australia’s highly regionally determined approach to gender care for young people. Each state and hospital currently largely follows its own protocol, with the RCH Melbourne guideline serving as the most influential example — including outside Victoria.
A guideline that missed the international rethink
The fact that the RCH guideline has barely been updated since 2018 is striking, because other parts of the world have made substantial changes in recent years. In the United Kingdom, the four-year Cass Review concluded in 2024 that the scientific evidence supporting puberty blockers for young people is weak. Pediatrician Hilary Cass put it this way: "I cannot think of another situation in medicine where we give life-changing treatments without having a clear understanding of the consequences." The British health minister at the time added that there was "insufficient evidence about the long-term effects of puberty blockers... that evidence should have been in place before they were ever prescribed."
Sweden and Finland had already moved ahead of Australia: both countries restricted the use of puberty blockers outside research settings after their own systematic literature reviews reached conclusions similar to those of the Cass Review. Germany adopted a new guideline in 2025, but its own psychiatric professional association raised critical concerns about it: the guideline would fail to address the "medical and ethical questions" needed to protect minors. Australia is therefore not leading the way with its announcement, but instead closing a gap that international observers have been pointing out for some time.
Why the comparison with Melbourne is problematic
The RCH Melbourne guideline dates from a period when the so-called affirmative model was rarely questioned. Since then, referrals to gender clinics have risen sharply in Australia as well, while the underlying evidence base — consisting largely of the same small, methodologically weak cohort studies highlighted by the Cass Review — has not kept pace. A guideline that is not revised even as scientific uncertainty increases gives clinicians and parents a false sense of certainty: the impression of an established medical consensus, when in reality there is growing international doubt. For a detailed comparison of puberty-blocker guidelines worldwide, including the Swedish and Finnish reconsiderations, the overview on puberteitsremmers.nl is a good starting point.
What needs to happen before 2028
Until the NHMRC issues new standards, current practice in Australia will remain unchanged — including the RCH guideline that formed the basis for thousands of referrals. Critics point out that a process lasting several years is a long time for children and young people entering the system now: they are receiving care based on a guideline whose own authors, following the Cass Review, can no longer stand behind the original recommendations with the same degree of confidence. For the Netherlands, where the Dutch Protocol occupies a comparable position as the foundation of care, Australia’s move is another sign that the scientific basis for puberty blockers is increasingly being explicitly questioned by governments themselves around the world, rather than only by outside critics.
Sources
Bernard Lane, "Guidelines in the balance", Gender Clinic News, May 24, 2026: genderclinicnews.com/p/guidelines-in-the-balance.