The Portuguese legislature is debating a set of measures that would overturn major elements of the country’s 2018 law on gender self-determination. On March 20 parliament approved first readings of several bills that together would restore medical oversight for legal sex change, restrict access to puberty blockers and cross-sex hormones for anyone under 18, and limit the presence of what some lawmakers call gender ideology in school curricula. Supporters of the changes argue they are protecting children and restoring scientific standards, while opponents say the proposals roll back human rights and reintroduce stigmatizing medical controls.
These initiatives come as Portugal’s political landscape has shifted to the right after the 2026 elections and a subsequent snap vote that gave Prime Minister Luís Montenegro a renewed mandate following the May 18, 2026, contest. The governing arrangement now includes the centre-right Democratic Alliance and parliamentary influence from the far-right Chega party, which has pushed for tougher rules on gender-related policy. The bills were brought forward by parties in this coalition and by the centre-right CDS-PP, and they have advanced to committee for detailed scrutiny and possible amendment.
Key legal changes being proposed
The draft legislation would repeal the current framework created in 2018 that allowed adults to change their legal sex and name without mandatory medical certification. If enacted, the law would reinstate a system in which a formal medical document is required to record a change in the civil registry, effectively reintroducing a medical validation prerequisite. For adolescents, the current rule allowing 16- to 18-year-olds to change legal sex with parental authorization and a professional report would be tightened: the new wording calls for approval from a certified multidisciplinary medical board. The bills specify that a report must “prove the diagnosis of gender incongruence” and be produced by a team in an accredited public or private health setting, signed by at least one specialist physician and one specialist psychologist.
Medical treatment for minors under scrutiny
One of the centre-right CDS-PP proposals explicitly bans the prescription, dispensing or administration of medicines intended to block puberty or to induce characteristics of a sex different from the minor’s biological sex for persons under 18, with narrow exceptions for documented intersex or endocrinological conditions monitored by a multidisciplinary team. Advocates of the ban highlight concerns about potential long-term effects on bone density, neurocognitive development, future fertility and psychosocial outcomes. Proponents of continued access counter that puberty blockers are reversible and a legitimate therapeutic tool for some young people, warning against framing medical care as a simple choice between treatment and catastrophic outcomes.
Evidence, experts and the public debate
The scientific arguments have become a central axis of the parliamentary debate. Critics of medicalised approaches have pointed to recent reviews and analyses that question the strength of evidence supporting routine use of hormonal interventions in adolescents, citing concerns about low-quality studies in documents submitted to lawmakers. Psychiatric and medical researchers have urged a cautious path similar to policy shifts in some other European countries, recommending that hormonal treatments for minors be treated as experimental or restricted to research settings while psychosocial support is prioritised. Meanwhile, organisations and clinicians who defend the 2018 framework stress clinical experience, guidance from international bodies and the rights of transgender and intersex people to access care.
Positions from political parties and civil society
On the parliamentary floor, rhetoric has been sharp. Members of the far-right have framed sex and gender as immutable categories and called for parental primacy over classroom instruction about gender. Left-wing and liberal deputies have accused the right of returning Portugal to a model of gatekeeping and discrimination, asking whether lawmakers want to be on the same side of history that opposed past expansions of rights. Activist groups such as ILGA Portugal and other LGBTI+ organisations describe the proposals as a rollback of human rights, while some parent and youth groups back the restrictions as safeguards against premature medicalisation.
What happens next and the wider implications
The bills that passed their initial readings now move to committee stages where amendments may be proposed and expert testimony heard before final votes in the 230-seat parliament. The president of Portugal retains the constitutional power to promulgate or veto legislation, a factor that could be decisive if the measures pass in their current form. If enacted, the changes would reshape access to legal recognition and medical care for transgender and intersex people, tighten consent pathways for minors, and likely trigger legal challenges and international scrutiny. Observers both inside and outside Portugal will be watching how committee debates, expert evidence and political bargaining influence the final outcome.
Whatever the legal trajectory, the debate underscores a broader European conversation about the balance between individual autonomy, parental rights, medical ethics and the role of the state in health and education policy. The parliamentary process will not only determine statutory language but also signal how the Portuguese system navigates competing claims about science, identity and children’s welfare.