Sexual orientation

What the research establishes, how to talk about it, and a legal landscape that differs radically between countries.

Illustration: Sexual orientation

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Being transgender: what it is, how many people, what medicine says

What being trans means, how many people, since when, what medicine has said since 2019, children and the debates, the right words.

A spectrum, not two boxes

The familiar categories — heterosexual, homosexual, bisexual — remain useful, but research now describes orientation more as a continuum than as separate compartments. Other orientations are equally recognised, including asexuality (little or no sexual attraction, with romantic attraction possible independently) and pansexuality (attraction regardless of gender).

Orientation is distinct from gender identity: being transgender says nothing about who a person is attracted to. Nor is orientation always fixed. Longitudinal studies show that how people describe themselves can change over a lifetime without making an earlier description untrue.

What is established

Two men in their forties cook dinner together in a warm kitchen, one of them laughing as he chops herbs
Same-sex couples have relationships as varied and stable as anyone else's.

Conversion practices

Practices aimed at changing sexual orientation or gender identity are ineffective and harmful: they increase depression, anxiety and suicide risk. A growing number of countries prohibit them, in some cases criminally, and consent does not make them lawful where they are banned.

Telling people, or not

There is no universally right moment. A few points that recur in people's accounts:

If you are on the receiving end: listen, thank them for the trust, avoid intrusive questions about their sex life, and do not pass the information on without permission.

Health and prevention

A young woman chats with a smiling nurse at the reception desk of a bright, welcoming health centre
Free, anonymous testing centres exist in most countries.

Prevention needs follow practices, not identities. Regular testing for sexually transmitted infections, vaccination against HPV and hepatitis B, and access to HIV prevention medication matter for anyone whose practices expose them. Free and anonymous testing exists in most countries.

The law country by country

The legal framework, the procedure, the time limits and the costs differ from one country to another. Each country below has a detailed page: governing texts, key facts, the actual procedure, costs, where to go and the traps to avoid.

Select a country to open its detailed page.

Europe

Ireland

The first country to introduce marriage equality by popular vote, and self-declaration gender recognition since 2015.

United Kingdom

Marriage equality across all four nations, strong discrimination law, and a conversion practices ban still not on the statute book.

Western Africa

Ghana

Criminalised as a misdemeanour, with a far broader bill passed by Parliament and awaiting assent.

Nigeria

One of the most restrictive frameworks in the world, criminalising relationships, organisations and public support.

Eastern Africa

Kenya

Colonial-era provisions remain in force, with a right to organise recognised by the Supreme Court in 2023.

Uganda

Among the most severe frameworks anywhere, following the 2023 Act largely upheld by the courts.

Zambia

Criminalised with very heavy maximum penalties, and enforcement that does occur.

Southern Africa

South Africa

Constitutional equality protection and equality-court remedies exist alongside specific reforms and practical safety concerns.

Southern Asia

India

Decriminalised in 2018, but the Supreme Court left marriage to Parliament in 2023 and no discrimination statute exists.

Pakistan

Same-sex relations remain criminalised, and transgender protections have been narrowed by the courts.

Eastern Asia

Hong Kong

Decriminalised in 1991, and a court ordered the government in 2023 to create a framework recognising same-sex partnerships.

South-eastern Asia

Malaysia

Criminalised under both the federal penal code and state religious law, with active enforcement.

Philippines

No criminal prohibition, but a national equality bill has been pending for decades.

Singapore

Criminalisation repealed in 2022, and the definition of marriage simultaneously insulated from constitutional challenge.

Northern America

Canada

Marriage since 2005, a criminal ban on conversion therapy since 2022, and human rights codes in every jurisdiction.

United States

Marriage protected by statute since 2022, employment covered by a 2020 Supreme Court ruling, and everything else varying by state.

Caribbean

Jamaica

Colonial-era offences remain on the books, and the practical issue is safety rather than prosecution.

Trinidad and Tobago

Decriminalised by the High Court in 2018, then reinstated on appeal in 2025, with a further appeal pending.

Oceania

Australia

Marriage since 2017 after a national postal survey, and conversion practices banned state by state.

New Zealand

Marriage since 2013, a conversion practices ban since 2022, and self-identification on birth certificates.

This topic is also covered for French-speaking countries · German-speaking countries.

Sources

  1. Les différentes orientations sexuelles — Santé publique France, French national public health agency, accessed 2026 (in French)
  2. Transidentité : prise en charge de l'adulte — Recommandations — has-sante.fr, 2025 (in French)
  3. Infections sexuellement transmissibles (IST) — World Health Organization (WHO), 2025 (in French)

Official or institutional documents this page relies on, consulted on 12 October 2026. Links open in a new tab.

Content updated in . The instruments cited can change: if in doubt, confirm with the official source given.

Text written with the help of AI, under the editorial responsibility of CAPIT; human reviews are occasional (method and sources: About). This content does not replace medical or legal advice. Spotted an error? Write to us.

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