Sleep research links REM quality decline to aging

A new study involving 627 healthy adults aged 18 to 80 has revealed that the quality of REM sleep declines with age, specifically affecting the active "phasic" phase. Researchers utilized polysomnography to monitor brain waves, eye movements, and physiological signals, finding that the density and frequency of rapid eye movements decrease over time.

The research highlights a gender disparity: women show a steeper decline in phasic REM percentage and eye movement density compared to men, suggesting faster age-related deterioration in this sleep stage.

Because REM sleep is critical for memory consolidation and emotional regulation, scientists believe these microstructural changes could serve as early biomarkers for detecting neurodegenerative and psychopathological disorders. To protect REM sleep quality, experts recommend consistent sleep schedules, stress management, limiting alcohol consumption, and considering magnesium-based supplements.