Genetic Study Links Early Onset Depression to Elevated Suicide Risk

A landmark study published in Nature Genetics reveals a strong hereditary connection to suicide risk among individuals diagnosed with depression before age 25. According to research led by Lu Yi of the Karolinska Institute, those with early onset depression have a significantly stronger genetic component compared to individuals diagnosed after age 50. The study identified twelve genetic regions associated with early onset depression but only two for late onset cases.

Alarmingly, one in four individuals with a high genetic risk for early onset depression attempted suicide within ten years of diagnosis—double the rate observed in those with lower genetic risk. The data were drawn from genetic and health records of over 150,000 people with depression and 360,000 controls across Sweden, Denmark, Norway, Finland, and Estonia.

Researchers hope these findings will enable healthcare professionals to better predict which patients are at high suicide risk, allowing for increased monitoring and targeted support. Future research will explore how genetic differences interact with stress, life experiences, and brain development, as well as the potential to use genetic risk profiles in suicide prevention strategies.