Sterilization Law 1934

On 18 May 1934 Sweden passed SFS 1934:171 — Lag om sterilisering av vissa sinnessjuka, sinnesslöa eller andra som lida av rubbad själsverksamhet — its first national sterilization law. The government bill, Proposition 1934:103, was signed by Gustaf Adolf (acting king) and K. Schlyter (Justice Department) under Per Albin Hansson’s Social Democratic government and passed with broad cross-party support.

The law stated two grounds for sterilization: that an individual would “through hereditary disposition transmit mental illness to descendants,” or was “permanently unable to manage care of their children.” The proposition openly references preventing “inferior offspring” — the eugenic rationale was official and stated plainly. It also covered eugenic, social, humanitarian, and criminological justifications together, signalling from the outset that the law was designed for wide application.

The consent architecture was constructed to be bypassed. Sterilization could proceed when someone “on account of mental disturbance permanently lacks capacity to give valid consent.” For the mentally disabled, written consent from a guardian plus two consulting physicians was sufficient — no central medical board required. In practice the SOU 1999:2 investigation documented that sterilization was presented as a condition for discharge from psychiatric and penal institutions, required to obtain marriage permits, and applied to minors. 93% of those sterilized across the full 1935–1975 program were women.

This law was passed the same year as Alva and Gunnar Myrdal’s Kris i befolkningsfrågan and at the very moment of the folkhemmet project’s institutional consolidation. It was not a marginal concession to scientific fashion; it was simultaneous with the welfare state’s founding. The 1934 law established the administrative apparatus — sterilization boards, medical review channels, institutional pathways — that the 1941 expansion then widened.