The Long Shadow of “Treating” Homosexuality: Why remembering this history matters...
Every generation likes to believe it has arrived at a more enlightened moment than the one before it. We like to imagine that the darker chapters of history belong safely in the past and that progress, once achieved, quietly locks the door behind it.
History rarely behaves that neatly.
Not very long ago, within the lifetime of many people still living, homosexuality was widely regarded in medicine, religion, and law as something that required correction. Same-sex attraction was labelled deviant, immoral, or pathological. The assumption underlying those labels was simple and powerful: something about these individuals was wrong, and responsible institutions should intervene.
Today, that idea feels profoundly out of step with our understanding of human diversity. Yet for decades it shaped psychiatric treatment, religious counselling, and public policy across large parts of the world.
Remembering how that happened matters. Not because we should remain trapped in past injustices, but because understanding them helps us recognise how easily authority and culture can combine to produce harm when difference is mistaken for disorder.
When difference became diagnosis
The medicalisation of homosexuality began during the late nineteenth century as psychiatry and sexology attempted to categorise human behaviour scientifically. Researchers such as Richard von Krafft-Ebing described same-sex attraction as sexual inversion, suggesting that psychological traits normally associated with one sex had appeared in another.
Although this framing moved the discussion away from purely religious condemnation, it still located homosexuality firmly within the realm of pathology.
By the early twentieth century that perspective had become embedded within psychiatric thinking. Homosexuality appeared in clinical literature as a developmental disturbance or psychological condition. Early psychoanalytic theories suggested that same-sex attraction might emerge from family dynamics, childhood experiences, or unresolved emotional development.
Once something is defined as a disorder, treatment becomes the next logical step.
The therapies that followed
Throughout the twentieth century, clinicians experimented with a wide variety of methods intended to redirect sexual orientation.
Some interventions were relatively conventional within the psychiatric practice of the time. Psychoanalysis, often lasting for years, attempted to explore the emotional roots of sexuality in the hope that insight might produce change.
Others were more experimental.
Hormone treatments were occasionally attempted, based on the assumption that sexual orientation might be influenced by endocrine imbalances. In other cases, psychiatrists turned to behavioural conditioning.
Perhaps the most infamous approach was aversion therapy. During the 1950s through the 1970s, some psychiatric programs attempted to condition individuals to associate same-sex attraction with discomfort or pain. Participants might be shown photographs of same-sex intimacy while receiving electric shocks or nausea-inducing drugs.
Historical accounts document programs in several countries. In the United States, some university counselling services experimented with such methods. In the United Kingdom, aversion therapy was carried out within the National Health Service during the 1960s. In South Africa, during the apartheid era, military medical programs subjected some conscripts to coercive attempts to suppress same-sex attraction.
These practices were often framed as legitimate behavioural science at the time.
Yet the long-term outcomes were rarely what clinicians hoped for. Rather than altering orientation, such treatments frequently produced anxiety, depression, and deep feelings of shame.
Even more invasive medical interventions occasionally occurred. During the period when psychosurgery was explored for severe psychiatric conditions, a small number of patients displaying behaviours considered socially unacceptable, including homosexuality, were subjected to lobotomies or related procedures.
The record of these interventions reveals less about sexuality than about the limits of medical certainty when cultural assumptions guide treatment.
Religion and the language of salvation
Medicine was not alone in seeking ways to “correct” homosexuality. Religious communities, interpreting sexuality through moral and theological frameworks, also developed responses.
In many traditions the approach centred on pastoral counselling, prayer, and moral discipline. Later, particularly from the late twentieth century onward, organised programs known as conversion therapy or reparative therapy emerged within some faith communities.
These programs often combined spiritual teachings with counselling techniques aimed at encouraging heterosexual identity. Participants might be asked to explore childhood relationships, modify behaviour, or engage in intensive prayer practices intended to transform desire.
For some individuals who held strong religious commitments, these programs seemed to offer hope that identity and belief could be reconciled.
Yet over time a growing body of psychological research began to document significant harm associated with such efforts. Many participants reported increased levels of depression, anxiety, internalised shame, and suicidal ideation.
In response, major professional organisations, including numerous national psychiatric bodies, have concluded that attempts to change sexual orientation are both ineffective and potentially harmful.
Science begins to shift
The reconsideration of homosexuality within psychiatry did not occur suddenly. It developed gradually through research, debate, and social change.
One important turning point came in the 1950s through the work of psychologist Evelyn Hooker. Hooker conducted studies comparing psychological assessments of homosexual and heterosexual men and found no evidence that gay men showed greater levels of psychological disturbance than their heterosexual counterparts.
Her work challenged the prevailing assumption that homosexuality was inherently linked to mental illness.
Around the same time, the groundbreaking studies conducted by Alfred Kinsey and his colleagues suggested that human sexuality existed on a spectrum rather than within rigid categories. Their findings disrupted the neat boundaries that earlier researchers had assumed.
By the early 1970s, scientific evidence and social activism had converged. In 1973, the American Psychiatric Association removed homosexuality from the Diagnostic and Statistical Manual of Mental Disorders (DSM). The decision followed extensive internal debate and public pressure from activists who challenged the psychiatric classification of their identities.
Other professional bodies gradually followed. The World Health Organization removed homosexuality from its International Classification of Diseases in 1990.
Today, major health organisations recognise sexual orientation as a natural variation of human experience rather than a psychiatric disorder.
What neuroscience and trauma research now tell us
Modern neuroscience adds another layer to this conversation.
Research on psychological trauma has shown that experiences of chronic stigma, rejection, and identity suppression can significantly affect mental health and neurological functioning. Stress responses triggered by social exclusion activate the same neural pathways involved in physical pain.
Studies on minority stress theory have demonstrated that individuals facing persistent social stigma often experience elevated cortisol levels, chronic stress responses, and increased vulnerability to anxiety and depression.
These findings help explain why attempts to suppress or erase identity often lead not to transformation but to psychological harm.
The human brain is not easily reshaped by coercion or shame. It responds far more constructively to acceptance, safety, and connection.
The resilience of those who lived through it
What is remarkable about this history is not only the harm that occurred but the resilience of those who endured it.
Individuals who experienced stigma, medicalisation, or rejection did not simply disappear into silence. Many became central voices in a broader social movement that challenged the assumptions underlying those practices.
Activists organised protests at psychiatric conferences. Researchers conducted studies questioning earlier diagnostic frameworks. Communities formed networks of support.
Figures such as Frank Kameny, who challenged the U.S. government’s discrimination against gay employees in the 1960s, and countless unnamed activists contributed to a transformation in public discourse.
The changes that followed were gradual but significant. Laws criminalising same-sex relationships were repealed in many countries. Public attitudes shifted. Scientific understanding evolved.
Remembering the deeper history
What makes this chapter of medical history particularly striking is that the classification of homosexuality as illness is relatively recent.
Historical records from ancient Greece, Rome, parts of East Asia, and numerous Indigenous cultures describe social frameworks in which same-sex relationships existed without being pathologized.
These societies were not free from social constraints or prejudice. Yet their existence reminds us that the idea of homosexuality as disease emerged within a specific cultural moment rather than from any universal truth.
Understanding that context helps illuminate how cultural assumptions shape scientific interpretations.
Where we stand today
In many parts of the world, same-sex relationships are now recognised in law and protected under human rights frameworks. A growing number of countries have enacted legislation banning conversion therapy, particularly when applied to minors.
Professional medical organisations across the globe have affirmed that sexual orientation is not a disorder and that attempts to change it are both ineffective and potentially harmful.
These developments represent significant progress.
Yet remembering how recently such changes occurred remains important. History demonstrates that ideas once considered unquestionable can later appear deeply misguided.
A final reflection
The story of how homosexuality moved from pathology to acceptance within modern medicine is not simply a story about sexuality. It is a story about humility.
It reminds us that scientific knowledge evolves. It reminds us that cultural assumptions can influence even well-intentioned professionals. And it reminds us that listening to lived experience often reveals truths that theory alone cannot see.
Progress rarely arrives all at once. It grows through questioning, courage, and the willingness to reconsider what once seemed certain.
Remembering the history of attempts to “treat” homosexuality is not about dwelling on past mistakes.
It is about ensuring that when society encounters difference again, as it inevitably will, it chooses curiosity and compassion over correction.
Because the real measure of a civilisation is not how confidently it diagnoses difference, but how thoughtfully it learns to understand it.
References
American Psychological Association. (2009). Report of the Task Force on Appropriate Therapeutic Responses to Sexual Orientation.
Hooker, E. (1957). The adjustment of the male overt homosexual. Journal of Projective Techniques, 21, 18–31.
Kinsey, A., Pomeroy, W., & Martin, C. (1948). Sexual Behavior in the Human Male. Philadelphia: W.B. Saunders.
Livingston, G., et al. (2020). Dementia prevention, intervention, and care: 2020 report of the Lancet Commission. The Lancet, 396, 413–446.
McEwen, B. S., & Morrison, J. H. (2013). The brain on stress: vulnerability and plasticity of the prefrontal cortex. Neuron, 79(1), 16–29.
World Health Organization. (1990). Removal of homosexuality from the International Classification of Diseases (ICD-10).
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