Transgenderism

Transgenderism refers to the set of beliefs and practices organised around the idea that a person’s gender identity, an internal sense of being male, female, or otherwise, can differ from their biological sex and should take precedence over it in law, medicine, and social life. The central dispute is not whether some people experience distress about their sex, which is undisputed, but whether the appropriate response is to affirm a felt identity, including through medical intervention, or to treat the underlying distress while respecting the body as it is.

Conservatives generally hold that sex is a stable bodily reality and that public policy should be cautious, especially regarding irreversible medical treatment of minors. This entry sets out that position and the mainstream-medical view that contests it.

Key Takeaways

• “Transgenderism” describes the framework in which an internal gender identity is held to override biological sex in contested questions.
• Ryan T. Anderson’s When Harry Became Sally (2018) is a leading conservative statement of the case that sex is bodily and gender follows from it.
• England’s Cass Review (2024) found the evidence base for paediatric puberty blockers and cross-sex hormones to be weak, reshaping the debate over treating minors.
• The disagreement is partly philosophical, over what “gender identity” is, and partly empirical, over what medicine can safely do.

History And Context

The modern concept of gender identity as distinct from biological sex was developed in mid-twentieth-century clinical work, notably by Johns Hopkins psychologist John Money in the 1950s and 1960s. By the 1970s and 1980s gender-identity clinics existed in several countries, and diagnostic categories such as gender identity disorder, later revised to gender dysphoria in the American Psychiatric Association’s DSM-5 (2013), formalised clinical attention to the distress some people feel about their sex.

Two developments moved the subject into mainstream politics. First, from roughly 2010 onward, the number of adolescents, particularly natal girls, referred to gender clinics rose sharply in several Western countries. Second, an “affirmative” model of care spread, under which a young person’s stated identity is accepted and may be supported with puberty-suppressing drugs and later cross-sex hormones.

The affirmative model met sustained scrutiny in England. In 2020 the NHS commissioned Dr Hilary Cass, a former president of the Royal College of Paediatrics and Child Health, to review gender services for young people. Her final report, published in April 2024, concluded that the evidence for puberty blockers and cross-sex hormones in minors was weak and recommended that such drugs not be routinely prescribed outside research settings, prompting the NHS to restrict their use. Comparable restrictions had already been adopted in Sweden and Finland.

The Conservative Position

The conservative case rests on a claim about human nature. Ryan T. Anderson argues in When Harry Became Sally (2018) that the best available biology, psychology, and philosophy support understanding sex as a bodily reality and gender as the social expression of that reality, rather than an identity that can float free of the body.¹ On this view, to say a person’s true sex differs from their bodily sex is to assert something that medicine cannot deliver and that risks harming the people it intends to help.

From this premise conservatives draw several conclusions. They urge extreme caution with minors, holding that children cannot give meaningful consent to interventions whose long-term effects on fertility, bone density, and sexual function are uncertain. They cite the Cass Review’s finding that the evidence underpinning paediatric gender medicine is of poor quality as vindication of that caution.² They favour treating dysphoria first through psychological support, noting that many cases arising in childhood resolve after puberty if not medically redirected.³ And they resist compelled speech and the redefinition of sex-based categories in law and sport, arguing that women’s distinct interests in privacy and fair competition are real and ought not to be dissolved into self-declared identity.

Conservatives stress that this position is compatible with treating individuals with dignity. The argument is about what is true and what is safe, not about denying that gender dysphoria causes genuine suffering.

Differing Positions

The mainstream-medical and affirmative view, defended by bodies such as the World Professional Association for Transgender Health, holds that gender identity is a settled and deeply felt aspect of a person, that gender dysphoria is best relieved by allowing people to live as the gender they identify with, and that for some adolescents timely medical support relieves serious distress and reduces self-harm.⁴ On this account, withholding care is not neutral; it carries its own risks.

Defenders of affirmative care argue that the Cass Review, while a serious document, has been over-read: that “weak evidence” reflects the difficulty of randomised trials in this area rather than proof of harm, and that individualised clinical judgment remains appropriate. They contend that social and medical transition has improved many lives, and that respect for patient autonomy and the testimony of transgender people themselves should carry substantial weight. The strongest form of this position concedes uncertainty about minors while insisting that adults’ considered decisions about their own bodies deserve deference.

References

1. Ryan T. Anderson, When Harry Became Sally: Responding to the Transgender Moment (Encounter Books, 2018), p. 2.
2. Hilary Cass, Independent Review of Gender Identity Services for Children and Young People: Final Report (The Cass Review, 2024), p. 33.
3. Ryan T. Anderson, When Harry Became Sally: Responding to the Transgender Moment (Encounter Books, 2018), p. 117.
4. Eli Coleman et al., Standards of Care for the Health of Transgender and Gender Diverse People, Version 8 (World Professional Association for Transgender Health, 2022), p. S31.