What are puberty blockers and why are trans children being banned from taking them?
The UK government is set to make a ban on puberty blockers for children with gender dysphoria indefinite after experts warned there is "an unacceptable safety risk", despite campaigners condemning the move as setting a "dangerous precedent".
The Department of Health and Social Care (DHSC) said the Commission on Human Medicines (CHM) recommended indefinite restrictions on puberty blockers for young trans people and health secretary Wes Streeting has said there will be a clinical trial into the use of puberty blockers next year "to establish a clear evidence base for the use of this medicine".
But charities supporting trans people and their rights have pointed out that puberty blockers will continue to be available to cisgender children and young people experiencing precocious puberty, and for over-18s.
Puberty blockers for the treatment of gender dysphoria and gender incongruence in children was first banned temporarily in May 2024 after an independent review of gender identity services, known as the Cass Review, found there was insufficient evidence to show they were safe.
Streeting said that the safety concerns raised by the review mean the government must "act with caution and care when it comes to this vulnerable group of young people, and follow expert advice".
But a statement from charity TransActual warned that the ban will force young trans people to turn to illegal sources on the "grey and black market" to access puberty blockers, without "blood testing or appropriate medical supervision".
"There is no evidence that puberty blockers pose a serious and urgent danger to health," the charity said. "If they did pose such a danger, they would be banned for everyone and not specifically young trans people seeking private care. A ban on puberty blockers increases the risk of harm to trans young people."
What are puberty blockers?
During puberty, the brain sends out hormones that tell the body what to do, like grow pubic and underarm hair. They also tell the sex organs (ovaries and testes) to start releasing the hormones oestrogen and testosterone.
But, some people experience gender dysphoria, which is a sense of unease that a person may have because of a mismatch between their biological sex and their gender identity.
Until now, children who experience gender dysphoria may have been prescribed puberty blockers, a type of drug that suppresses the release of hormones and can be used to ‘pause’ puberty.
The drug stops their bodies from developing temporarily. Gids said that this gives children more time to consider their options and think more about their gender identity, without the distress that comes with unwanted changes in their body.
After the age of 16, teenagers who have been on puberty blockers for at least 12 months may be given cross-sex hormones, which can cause irreversible changes like breast development or the breaking or deepening of voice.
The NHS warns that long-term cross-sex hormones "may cause temporary or even permanent infertility", and that there is "some uncertainty about the risks of long-term cross-sex hormone treatment".
There are also some cases in which puberty blockers are prescribed for children who are not experiencing gender dysphoria. Much younger children who are going through puberty much earlier than normal - called early or precocious puberty - may also be prescribed the drugs.
How many children are on puberty blockers?
According to the BBC, fewer than 100 young people in England are currently prescribed puberty blockers.
These people, who were prescribed the drugs by the NHS, will be able to continue their treatment despite the new policy.
A report by The Telegraph published last November said that, in the 12 months to July 2023, the number of children beginning puberty blockers on the NHS rose to 83. This was double the average of the two years before.
It is not known how many children are on puberty blockers prescribed by private gender identity clinics.
NHS England said that puberty blockers will be available in the future, but only through a mandatory research trial.
Response to NHS England’s new policy
The UK government and campaigners in support of restricting access to puberty blockers have backed the decision by NHS England.
But trans charities such as Mermaids and TransActual have condemned the decision and reiterated that trans people "deserve access to high quality, timely healthcare".
A statement by Mermaids said the announcement is "deeply disappointing", adding that it is a "further restriction of support offered to trans children and young people through the NHS, which is failing trans youth".
Meanwhile, TransActual said the decision will "irreparably damage people’s health, wellbeing and life chances". The charity also pointed out that only trans youth who can afford it will be able to access blockers via private healthcare providers, "creating inequality between rich and poor trans people and leading to riskier approaches".
John Stewart, national director of specialised commissioning at NHS England, acknowledged the deeply divisive nature of the subject and said: "Given that the debate is often very polarised, so too were the responses to the consultation.
"Many people said the policy didn’t go far enough in terms of still allowing potential access [to puberty blockers] through research, and others saying clearly they disagreed fundamentally and that these should be routinely available to everyone who believes they need it."
Read more about puberty blockers:
Children will not be prescribed puberty blockers, NHS says (PA Media, 5-min read)
Puberty blockers: why some young people need help exploring their gender identity (The Conversation, 6-min read)
Gender affirmation plays a huge role in the mental health of trans youth, new study shows (Motherly, 2-min read)
