A new study suggests that chronic psychosocial stress may be linked to subtle changes in the brain's small blood vessels, even in healthy young adults. Researchers at a major university used MRI scans to measure perivascular spaces (PVS) in the brains of 61 healthy young adults. These spaces are fluid-filled channels that help clear waste from the brain. The study found that participants with higher levels of chronic stress had larger PVS volumes in certain brain regions, specifically the centrum semiovale and the frontal and occipital lobes. No such link was seen in other areas like the basal ganglia. The study was observational, so it cannot prove that stress caused these changes. The researchers note that more work is needed to understand the exact mechanisms. For now, the findings add to evidence that stress may affect brain health even in young, otherwise healthy people. However, the study is small and early, so these results should be considered preliminary. The main takeaway is that managing stress may be important for overall health, but no specific medical advice is given.
Chronic psychosocial stress linked to higher perivascular space volumes in healthy young adultsStress linked to brain changes in healthy young adults
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This cohort study included 61 healthy young adults to assess the relationship between chronic psychosocial stress and MRI-visible perivascular space volumes. Participants were compared against individuals with lower chronic psychosocial stress levels. The primary outcome measured fractional perivascular space volumes across multiple brain regions.
Significantly higher fractional perivascular space volumes were found in the centrum semiovale and in the frontal and occipital lobes among individuals with higher chronic psychosocial stress. These differences reached statistical significance with a false discovery rate p-value less than .05. No effect was found in the basal ganglia, CSO subdivision, or parietal and temporal lobes, where the false discovery rate exceeded .09.
Safety data, adverse events, and discontinuations were not reported in this observational study. Key limitations include the need to establish effects on the cerebral microvasculature and the lack of inflammatory marker or blood-brain barrier measures to elucidate mechanistic pathways. Future multimodal research may help clarify these pathways.
The study indicates that chronic psychosocial stress may contribute to subtle, centrum semiovale specific microvascular alterations even in healthy young adults. However, causality is not established, and these findings should be interpreted with caution regarding clinical practice relevance.
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