25/11/2025
https://www.facebook.com/share/17mrCqHbr7/?mibextid=WC7FNe
🧠Can interrupted sleep pave the way for brain damage and future disease?
A landmark eight-year study following 1,441 adults found that moderate to severe obstructive sleep apnea (OSA) more than doubled the risk of developing cerebral microbleeds—tiny brain bleeds that are linked to a higher likelihood of both stroke and dementia. These microbleeds, which accumulate blood products in the brain, were seen in 7.25% of those with severe OSA versus just 3.33% without OSA at the final follow-up. The risk persisted even after researchers accounted for several health and lifestyle factors, including hypertension, diabetes, and genetic risk for Alzheimer’s.
The study, based on Korean Genome and Epidemiology Study data, tracked participants using sleep studies and brain MRIs over time. It revealed that the risk for brain microbleeds was specifically associated with moderate to severe OSA and did not appear in those with mild sleep apnea. Medical experts suggest that recurrent drops in nightly oxygen levels, inflammation, and oxidative stress might underlie this direct pathway from sleep apnea to vascular damage.
While more research is needed, the findings underscore the importance of diagnosing and treating sleep apnea early—not only to protect sleep quality but to potentially reduce risks for stroke and dementia later in life.
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📄 RESEARCH PAPER
📌 Ali Tanweer Siddiquee et al, "Obstructive Sleep Apnea and Cerebral Microbleeds in Middle-Aged and Older Adults", JAMA Network Open (2025)
