A stressful life can leave marks on our genetic code, some of which can even be passed on to our children. A study now reveals how the biological impact of trauma on a mother persists long after the violent acts themselves have passed.
The international team of researchers demonstrate the physical mechanisms behind intergenerational trauma in humans, explaining why people with a family history of adversity are more prone to mental health conditions like anxiety and depression, despite not having experienced the adverse events themselves.
The researchers analyzed DNA collected from 48 Syrian families across three generations. These families included grandmothers or mothers who while pregnant had fled the 1982 siege and massacre in Hama or the 2011 armed uprising – both part of the ongoing Syrian civil war.