Fresh research from a large-scale cohort study has found that exposure to psychological trauma in both childhood and adulthood significantly increases the risk of developing dementia and stroke later in life.
The study, which analyzed data from over 11,000 adults aged 45 and older participating in the China Health and Retirement Longitudinal Study (CHARLS), revealed a clear dose-response relationship: the more adverse experiences individuals reported, the higher their likelihood of being diagnosed with dementia or suffering a stroke during the follow-up period.
According to the findings, 78.8% of participants reported at least one adverse childhood experience (ACE), although 36.6% reported at least one adverse adulthood experience (AAE). Over 30% had experienced both types of trauma.
Over an average follow-up of nearly five years, researchers observed that cumulative psychological stress—particularly when spanning both life stages—was linked to long-term neurological harm through mechanisms such as chronic inflammation, hormonal dysregulation and increased susceptibility to mood disorders.
The study’s authors noted that prior research had lacked prospective data on the combined impact of childhood and adult trauma on neurovascular disease incidence. This analysis helps fill that gap by demonstrating how early and later-life stressors may interact to elevate dementia and stroke risk over time.
Experts say the results underscore the importance of considering mental health history when assessing long-term brain and cardiovascular health, especially in aging populations. Addressing trauma through early intervention and sustained mental health support could play a role in reducing future cases of dementia and stroke.
