Memory loss is often seen as a natural part of aging, but new research suggests another factor may be playing an important role. A study from Rutgers Health has found that stress people keep bottled up may be linked to worsening memory over time.
The research focused on older Chinese Americans, a group that has often been underrepresented in studies of brain health and cognitive aging. The findings suggest that emotional strain hidden beneath the surface could have lasting effects on memory, as per a report by Science Daily.
Why does internalized stress matter?
The study, published in the Journal of Prevention of Alzheimer's Disease, examined factors that may influence cognitive decline among older Chinese Americans. Researchers from the Rutgers Institute for Health, Health Care Policy and Aging Research focused on how emotional and social experiences affect memory as people age.
According to lead author Michelle Chen, understanding these risks is becoming increasingly important as the population of older Asian Americans continues to grow.
"With the number of older Asian Americans growing significantly, it's vital to better understand the risk factors of memory decline in this understudied population," said Chen.
Researchers noted that cultural expectations can sometimes make emotional struggles less visible. They pointed to the model minority stereotype, which often portrays Asian Americans as highly successful and resilient, potentially masking underlying stress and emotional challenges, as per a report by Science Daily.
What did researchers discover?
To explore the issue, the team analyzed information from the Population Study of ChINese Elderly (PINE), the largest community-based study of older Chinese Americans. The research included more than 1,500 participants living in the Chicago area and examined interviews conducted between 2011 and 2017, as per a report by Science Daily.
The study looked at three major factors: internalized stress, community cohesion, and external stress relief. Among these, internalized stress emerged as the strongest predictor of memory decline. Researchers described it as a tendency to absorb stressful experiences, combined with feelings of hopelessness, rather than expressing or addressing those emotions.
Across three waves of data collection, participants who experienced higher levels of internalized stress showed greater worsening of memory over time.
In contrast, neighborhood cohesion and external stress alleviation did not show a significant connection to changes in memory.
How could these findings help older adults?
The findings suggest that emotional well-being may play a larger role in cognitive health than previously understood.
"Stress and hopelessness may go unnoticed in aging populations, yet they play a critical role in how the brain ages," said Chen, who is also an assistant professor of neurology at Rutgers Robert Wood Johnson Medical School. "Because these feelings are modifiable, our goal is for this research to inform culturally sensitive stress-reduction interventions to mitigate these feelings in older adults."
Researchers believe the results could help guide future strategies aimed at reducing emotional strain and supporting healthy brain aging, as per a report by Science Daily.
The study was supported by the Rutgers-NYU Resource Center for Alzheimer's and Dementia Research in Asian and Pacific Americans. Coauthors included Yiming Ma, Charu Verma, Stephanie Bergren, and William Hu of the Rutgers Institute for Health. The findings add new insight into how hidden emotional stress may quietly shape memory health later in life.
FAQs
What type of stress was linked to memory decline?Stress that is internalized rather than expressed.
Who was included in the study?
Chinese American adults aged 60 and older.
