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News for Healthier Living

Sleep Apnea During REM Sleep Linked to Memory-Related Brain Changes

Obstructive sleep apnea, a condition that causes lower oxygen levels during sleep, is linked to degeneration of brain regions associated with memory through damage to the brain's small blood vessels, according to a study published May 7, 2025, online in Neurology(r), the medical journal of the American Academy of Neurology. The study found the brain changes were strongly associated with the severity of drops in oxygen levels during rapid eye movement (REM) sleep. The study does not prove that sleep apnea causes this degeneration; it only shows an association.

May 7, 2025


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