Children of Holocaust survivors face higher schizophrenia risk, Israeli study finds

A groundbreaking study from the Hebrew University of Jerusalem (HUJI) reveals a concerning intergenerational link between Holocaust trauma and the risk of schizophrenia in offspring. The research indicates that children born decades after the atrocities, even to parents who were young children during the Holocaust, face an elevated risk of developing this severe mental health disorder.

The study, published in the American Journal of Psychiatry, found that children born to mothers who were older than five years old at the time of the Nazi persecutions experienced a more than two-fold increase in their risk of schizophrenia. This phenomenon, termed "preconception echoes," suggests that severe childhood trauma experienced by a parent can profoundly impact the mental health of their children, even across generations.

Led by Prof. Hagit Hochner and Dr. Iaroslav Youssim from HUJI's Braun School of Public Health and Community Medicine, along with international collaborators, the research team investigated the long-term effects of severe preconception trauma. They utilized data from the unique Jerusalem Perinatal Study, which tracked births in West Jerusalem between 1964 and 1976. This data was then linked to Israel’s National Psychiatric Registry through December 2004 to monitor hospitalizations for schizophrenia and related disorders.

The analysis covered two large data samples, comprising 14,759 children of tracked mothers and 18,085 children of tracked fathers. Parents were classified as "exposed" if they were of Jewish ancestry and born before or during the Holocaust. The findings underscore the enduring and far-reaching shadows of historical atrocities, demonstrating how parental trauma can subtly shape the mental health landscape for future generations.