Do 9/11 first responders’ children inherit trauma?

Intergenerational trauma can affect mental health

Researchers say children of 9/11 first responders are experiencing impacts to their mental health, and they point to a study illustrating how intergenerational trauma can be transmitted across generations. The key idea is that trauma effects aren’t limited to people who directly experienced the event; they can also show up in the wellbeing of their offspring, even when the children were not exposed to the same traumatic experience.

Intergenerational transmission of trauma (ITT) has been documented in groups whose parents or caregivers were exposed to war, genocide, or interpersonal violence. In this context, the 9/11 first-responder family pattern is presented as another example of ITT—linking parental exposure to later mental health outcomes in children.

The findings matter because they broaden how clinicians, public health agencies, and support organizations may need to think about trauma care. If trauma is transmitted through family systems—potentially through psychological, behavioral, and biological pathways—then limiting treatment to the originally affected adults may miss a vulnerable population.

It also underscores the importance of monitoring mental health outcomes for children in families affected by major disasters. Targeted screening and early support could help mitigate long-term consequences.

The overall message is not just that trauma can leave marks, but that those marks can persist and transfer, producing mental health impacts in children. That makes intergenerational trauma a practical public health issue, not only a theoretical one.

• Evidence suggests trauma can transmit across generations
• Children may face mental health impacts even without direct exposure
• Family-based screening and support could be important