Masturbation as a cause or aggravating factor in insanity
01
What institutions accepted
At Ontario's London Asylum for the Insane in 1877, medical superintendent R. M. Bucke treated masturbation as capable, in selected patients, of helping to bring on an attack of insanity or aggravating an illness caused by something else. Although he classified other cases as symptoms only and doubted that masturbation was ever the sole cause, he acted on the causal category through genital wiring and circumcision.
02
What the evidence supports now
Contemporary clinical standards recognize masturbation as normal sexual activity and do not classify it as a cause of mental disorder. ICD-11 defines compulsive sexual behaviour disorder by persistent failure to control repetitive sexual impulses or behaviour that causes marked distress or impairment; high sexual interest or distress based only on moral disapproval does not qualify. Sexual behaviour that occurs with another condition is not evidence that it caused that condition.
03
Evidence for the overall belief
Open sources, locators and notes
- DocumentsHistorical beliefLondon Asylum — Report of the Medical Superintendent and Statistical Information, 1876–77Legislative Assembly of Ontario / Inspector of Asylums, Prisons and Public Charities
Where in the source: Ontario Sessional Papers (1878), no. 4, pp. 279–280, “Treatment” section
Bucke distinguishes masturbation as a contributing cause, an aggravating factor or a symptom only, doubts that it is ever the sole cause, and says only a small proportion of patients could benefit from stopping it.
- SupportsPresent correctionThe solitary vice: the superstition that masturbation could cause mental illnessWestern Journal of Medicine / PubMed Central
Where in the source: Western Journal of Medicine 175(1) (2001), pp. 66–68
Medical-historical review identifies the claimed causal link between masturbation and mental illness as a superstition and traces its rise and decline.
- SupportsPresent correctionClinical descriptions and diagnostic requirements for ICD-11 mental, behavioural and neurodevelopmental disordersWorld Health Organization
Where in the source: ICD-11 CDDR, code 6C72, printed pp. 526–531, especially pp. 527–530
WHO criteria require persistent impaired control plus marked distress or functional impairment, exclude distress based entirely on moral disapproval, and require differentiation from mania, dementia, medical conditions and substances.
- DocumentsImpactLondon Asylum — Report of the Medical Superintendent and Statistical Information, 1876–77Legislative Assembly of Ontario / Inspector of Asylums, Prisons and Public Charities
Where in the source: Ontario Sessional Papers (1878), no. 4, p. 280, patient table and paragraphs below it
The official report records 15 wired patients, complications requiring removal and rewiring, additional restraint and four circumcisions, followed by resumption of masturbation and no mental improvement in the four cases.
04
Impact
Bucke's 1877 official report documented genital wiring in 15 male patients. In several cases, inflammation and swelling forced removal and later replacement of the wire; some patients received more than one wire and had their hands restrained in a muff. Four patients were also circumcised in an attempt to arrest or reduce masturbation. All four resumed after healing, and none showed even temporary mental improvement. A later historical review found that wiring failed to arrest the behaviour in 7 of the 15 cases and was not continued.
Context
Bucke did not claim that every instance of masturbation caused insanity. He distinguished three possibilities: it could contribute to an attack in a predisposed person, aggravate an illness with another cause, or be only a symptom. The interventions were directed at patients whom he placed in the first two categories.
Bucke selected the cases himself and interpreted changes recorded after treatment as evidence of a connection. The resulting uncontrolled table cannot determine whether masturbation caused mental illness or whether any mental change resulted from suppressing it.
“Insanity” is retained here as the historical term used in the report. It covered varied conditions and does not map to a single modern diagnosis.
male patients subjected to genital wiring
patients circumcised; all resumed masturbation after healing
cases in which wiring did not arrest the behaviour
Historical totals and effects are presented as contextual evidence, not as universal causal claims.
Institutional episode 01
Canada — Ontario
North America
In 1877 Bucke converted a qualified causal theory into physical interventions at a provincial asylum. His report recorded complications, repeated wiring, hand restraint and four circumcisions. The results did not establish the theory: wiring failed to arrest masturbation in 7 of 15 cases, and all four circumcised patients resumed it without mental improvement.
Institutions involved
- London Asylum for the Insane
Institutional context
The London Asylum was a provincial public institution, and Bucke introduced the interventions during his first year as its medical superintendent. In the asylum's official report he separated patients whose masturbation he regarded as causal or aggravating from those for whom he regarded it as a symptom, then presented a selected 15-patient treatment table. The belief therefore functioned as a basis for medical practice under institutional authority, rather than remaining a private opinion.
Why this persisted
Administrative adoptionActing as medical superintendent, Bucke classified selected patients' masturbation as causal or aggravating and used that classification to authorize wiring, restraint and circumcision as psychiatric treatment.
How correction happened
Partially correctedAfter 1877; broader shift by the 1890s
Action: The asylum did not continue genital wiring, and Ontario asylum reporting later treated masturbation as a symptom rather than a cause.
The failed wiring programme was abandoned. Historical research finds that by the 1890s Ontario asylums described masturbation as a symptom rather than a cause, but no formal London Asylum repudiation of the broader causal theory has been identified.
Consequences
- Fifteen male patients underwent genital wiring intended to prevent masturbation
- Several developed inflammation and swelling that required removal and later replacement of the wire
- Some received multiple wires and had their hands restrained in a muff to stop the behaviour
- Four patients were circumcised; all resumed masturbation after healing and none showed even temporary mental improvement
- Seven of the 15 wiring cases were recorded as non-preventive, and the procedure was not continued
Evidence for this episode
11 evidence linksOpen sources, locators and notes
- DocumentsInstitutional carrierLondon Asylum — Report of the Medical Superintendent and Statistical Information, 1876–77Legislative Assembly of Ontario / Inspector of Asylums, Prisons and Public Charities
Where in the source: Ontario Sessional Papers (1878), no. 4, pp. 279–280, “Treatment” section
Primary provincial report issued under the London Asylum medical superintendent's authority and published in the official Ontario Sessional Papers.
- DocumentsMechanismLondon Asylum — Report of the Medical Superintendent and Statistical Information, 1876–77Legislative Assembly of Ontario / Inspector of Asylums, Prisons and Public Charities
Where in the source: Ontario Sessional Papers (1878), no. 4, p. 280, patient table and explanatory text
Bucke explains the diagnostic sorting used to select cases and reports wiring, repeat wiring, hand restraint and circumcision.
- DocumentsConsequencesLondon Asylum — Report of the Medical Superintendent and Statistical Information, 1876–77Legislative Assembly of Ontario / Inspector of Asylums, Prisons and Public Charities
Where in the source: Ontario Sessional Papers (1878), no. 4, p. 280, note and final paragraph under the table
Records inflammation and swelling, removal and replacement of wires, multiple wires, restrained hands, four circumcisions and the absence of even temporary mental improvement after those operations.
- ContextualizesContextGynecological Operations on Insane Women: London, Ontario, 1895–1901Journal of Social History / PubMed
Where in the source: Journal of Social History 15(3) (Spring 1982), pp. 467–484
Peer-reviewed history of later gynecological operations at the same asylum places Bucke's interventions within the institution's longer treatment history; exact 1877 claims are independently tied to the primary report.
- SupportsConsequencesRichard Maurice Bucke (1837–1902)Royal Society of Canada
Where in the source: Paragraphs beginning “He focused upon the ‘great sympathetic nervous system’” and “Unlike other Canadian asylum superintendents”
Historian-authored biographical account describes Bucke's theory, penile wiring of 15 patients and the experiment's failure; the page notes that contributor views are not necessarily those of the Royal Society.
- ContextualizesContextThe solitary vice: the superstition that masturbation could cause mental illnessWestern Journal of Medicine / PubMed Central
Where in the source: Western Journal of Medicine 175(1) (2001), pp. 66–68
Places the London intervention within the longer medical history of the belief that masturbation caused mental illness.
- DocumentsInstitutional correctionGynecological Operations on the InsaneArchivaria
Where in the source: Archivaria 10 (Summer 1980), p. 135
Finds that the habit was not arrested in 7 of 15 wired patients, that Bucke did not continue the procedure and that by the 1890s Ontario asylum physicians treated masturbation as a symptom rather than a cause.
- SupportsMechanismThe Evils of “Self-Abuse”Western University Archives and Special Collections
Where in the source: Page body under “The Evils of ‘Self-Abuse’”
University archival exhibit describes the nineteenth-century causal belief and the painful mechanical method Bucke used at the London asylum.
- ContextualizesContextMasturbatory insanity: the history of an idea, revisitedPsychological Medicine / Cambridge University Press
Where in the source: Psychological Medicine 53(9) (2023), pp. 3777–3782, abstract
Peer-reviewed reassessment explains that nineteenth-century psychiatrists could regard uncontrolled masturbation both as a feature of mental disorder and as a cause of a proposed form of insanity, while ordinary masturbation was not necessarily treated as disease.
- ContextualizesContextOverview of SexualityMSD Manual Professional Edition
Where in the source: Section “Masturbation”
Current professional reference describes masturbation as normal sexual activity and limits clinical concern to circumstances such as compulsivity, public behaviour or interference with relationships and functioning.
- ContextualizesContextClinical descriptions and diagnostic requirements for ICD-11 mental, behavioural and neurodevelopmental disordersWorld Health Organization
Where in the source: ICD-11 CDDR, code 6C72, printed pp. 526–531, especially pp. 527–530
Supplies the modern diagnostic distinction between a sexual act and a persistent pattern of impaired control causing distress or impairment, including the required exclusions and differential diagnosis.
Source registryEach source is registered once and can carry several precise evidence relationships.9 sources
- 01London Asylum — Report of the Medical Superintendent and Statistical Information, 1876–77Legislative Assembly of Ontario / Inspector of Asylums, Prisons and Public Charities5 evidence links
- 031 evidence link
- 04The solitary vice: the superstition that masturbation could cause mental illnessWestern Journal of Medicine / PubMed Central2 evidence links
- 051 evidence link
- 06The Evils of “Self-Abuse”Western University Archives and Special Collections1 evidence link
- 07Masturbatory insanity: the history of an idea, revisitedPsychological Medicine / Cambridge University Press1 evidence link
- 081 evidence link
- 092 evidence links