(888) Conversion Therapy: Historical Context and Enduring Harm

Abstract Introduction Conversion therapy refers to a heterogeneous set of interventions aimed at altering or suppressing an individual’s sexual orientation, gender identity, or gender expression. Originating in the late 19th and early 20th centuries, these practices emerged within a medical and moral framework that pathologized non-heteronormative identities. Early defenders within psychiatry and psychoanalysis viewed homosexuality as a disorder requiring treatment, employing techniques such as psychoanalysis, aversive conditioning, electroconvulsive therapy, hormonal manipulation, and religious counseling. Although the World Health Organization declassified homosexuality as a mental disorder in 1990, conversion practices have persisted in various cultural and religious contexts worldwide. Objective This study aims to review the historical development of conversion therapy within psychiatric and psychological practice, examine the empirical evidence on its efficacy and psychological consequences, and highlight its ethical and human rights implications in contemporary mental health care. Methods A narrative review of historical and contemporary literature was conducted using academic databases including PubMed and Google Scholar. The search terms comprised “conversion therapy,” “reparative therapy,” “sexual orientation change efforts,” “history,” and “harm.” Sources were analyzed thematically, emphasizing the evolution of theoretical reason, treatment modalities and psychological outcomes. Results Historically, conversion therapy reflected broader sociocultural efforts to enforce heteronormativity through medical authority. Early psychiatric models framed homosexuality as a neurotic or developmental deviation, leading to interventions grounded in psychoanalytic theory. Mid-20th-century behavioral psychology introduced aversive conditioning techniques, such as nausea induction or electric shocks, which sought to extinguish same-sex attraction. Later, religious and pseudoscientific programs promoted “healing” through prayer, counseling, or “gender-realignment” exercises. Empirical research consistently demonstrates that conversion therapy is ineffective in changing sexual orientation or gender identity. Instead, exposure to such interventions is strongly associated with adverse mental health outcomes, including major depressive episodes, anxiety disorders, self-hatred, post-traumatic symptoms, and elevated risk of suicidal ideation and attempts. Survivors frequently report feelings of shame, isolation, and loss of trust in health professionals. These harms are amplified when conversion efforts occur during adolescence or under coercion. Professional bodies have unanimously denounced conversion therapy as unethical, scientifically unfounded, and incompatible with human rights. Conclusions Conversion therapy represents a historical legacy of medicalized discrimination and a continuing source of psychological trauma. Its persistence underscores the need for continued advocacy, education, and legislative action to prohibit such practices globally. From an ethical standpoint, the repudiation of conversion therapy is not merely a scientific correction but a reaffirmation of the principles of autonomy and beneficence that guide modern mental health care. Promoting affirmative, evidence-based, and identity-supportive therapeutic approaches is essential to safeguard the wellbeing and dignity of LGBTQ+ individuals. Disclosure No