Hereditary diagnoses as reliable grounds for compulsory sterilization

Nazi German public-health, medical and judicial institutions treated a list of psychiatric, neurological, sensory and social diagnoses as identifying “hereditarily diseased” people whose children were highly likely to inherit serious defects, and used that purported hereditary prediction to order compulsory sterilization.

1 episode

Current understanding

The blanket hereditary inference built into the sterilization system was scientifically invalid. Some conditions on the law's list genuinely have genetic components, and Huntington disease is a clear single-gene inherited disorder. But diagnoses such as schizophrenia and bipolar disorder reflect complex genetic and environmental risk rather than a single deterministic inheritance pattern, while “congenital feeblemindedness” was used as an elastic category that swept in people judged socially deviant or unable to pass conformity and intelligence tests. A diagnosis did not establish the statutory claim that a person's future children were highly likely to suffer severe hereditary defects.

Consequences and human impact

The hereditary claim was embedded in law, medical reporting, special courts and surgery. The 1933 Law for the Prevention of Offspring with Hereditary Diseases took effect on 1 January 1934, created Hereditary Health Courts composed of a judge and physicians, and permitted sterilization to be carried out against the person's will with police force if necessary. Doctors, health offices and institutions supplied cases and diagnoses. Approximately 400,000 people were forcibly sterilized under the Nazi system. The Bundestag condemned the sterilizations as National Socialist injustice in 1988 and legislatively annulled surviving Hereditary Health Court sterilization decisions in 1998.

How the consequences followed

The correction is not that heredity is irrelevant to every condition listed in the law. Huntington disease is autosomal dominant, while schizophrenia and bipolar disorder have substantial but complex genetic contributions. The false institutional leap was from a broad diagnosis to a sufficiently certain prediction about descendants to justify irreversible reproductive coercion.

The category translated as “congenital feeblemindedness” was especially expansive. Nazi authorities used it not only for intellectual disability but also for people they considered socially deviant or who failed tests presented as measures of intelligence or social conformity.

The program ended with the Nazi regime in 1945, but institutional correction came much later. West German recognition was delayed: the Bundestag condemned the forced sterilizations in 1988, annulled the court decisions in 1998 and in 2007 explicitly condemned the 1933 law itself as National Socialist injustice.

≈400,000

people forcibly sterilized under the Nazi Hereditary Health Law

diagnostic categories named by the law as sterilization grounds

1998

year Germany legislatively annulled surviving Hereditary Health Court sterilization decisions

Quantitative figures are highlighted only when the cited evidence supports them. The scale of a related catastrophe is not automatically treated as a death toll caused solely by this belief.

Institutional episode

Nazi Germany

1934–1945Enforced doctrine

Nazi compulsory sterilization transformed an overconfident hereditarian model into enforceable medical law. The state treated heterogeneous diagnoses as if they reliably identified people whose future children faced a high probability of severe hereditary defect, and special courts converted those judgments into compulsory operations. Modern genetics shows why that inference was untenable for broad psychiatric diagnoses, while historical evidence shows that the most frequently used category could absorb social nonconformity itself.

Institutions

Reich Ministry of the Interior and public-health administration
Hereditary Health Courts and Higher Hereditary Health Courts
Public health offices, psychiatric institutions and participating hospitals

Documented consequences

Forced sterilization of approximately 400,000 people under a diagnosis-driven eugenic system
Irreversible reproductive surgery ordered through special courts and enforceable against the person's will
Broad use of “congenital feeblemindedness” to convert social judgments and disputed testing into hereditary diagnoses
Medical and judicial institutionalisation of Nazi racial-hygiene concepts as purported scientific risk assessment
Physical complications, deaths and lifelong psychological and social harm among people subjected to sterilization
Decades of delayed legal rehabilitation before the Federal Republic annulled the court orders

Institutional machinery

The July 1933 sterilization law defined people with listed diagnoses as “hereditarily diseased” and allowed sterilization when medical science supposedly indicated a high probability of severe hereditary defects in their descendants. From January 1934 special courts decided cases using medical reports and testimony. Each court combined a judge, a public-health physician and another physician versed in hereditary-health doctrine. Once a sterilization order became final, the law permitted police-backed physical compulsion. Physicians, institution directors and health officials fed people into the process, and hospitals performed the operations.

Sources and what they establish

Law for the Prevention of Offspring with Hereditary Diseases — 14 July 1933German History in Documents and Images
Forced Sterilization: A Form of Nazi PersecutionUnited States Holocaust Memorial Museum
Draft law annulling sterilization decisions of the former Hereditary Health Courts — 1998German Bundestag
Official legislative record describing the sterilizations as National Socialist injustice, estimating the scale of the program and providing for annulment of surviving court sterilization orders.

Last reviewed: 25/08/2026