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A study suggests that waking up mid-dream could be an early sign of dementia. Researchers found that people who experience REM (rapid eye movement) sleep later in the night are more prone to or at risk for dementia. This is because REM sleep helps clear toxic proteins linked to brain damage, and issues with REM can disrupt memory consolidation.
Scientists note that waking up mid-dream, a common symptom among older adults, might indicate delays in reaching REM sleep, which could increase stress hormones like cortisol, potentially impairing the hippocampus—a key structure for memory. The study highlights how factors like alcohol consumption can delay REM sleep and worsen cognitive decline.
The study, conducted by researchers at UC San Francisco, involved 128 volunteers averaging 70 years old. Those with Alzheimer’s disease were more likely to have delayed REM sleep compared to those with early REM issues. The research also found that melatonin may enhance REM sleep and reduce the accumulation of toxic proteins like amyloid and tau.
Other interventions targeting REM sleep, such as certain medications for insomnia or treating sleep disorders like sleep apnea, could help lower the risk of cognitive decline by reducing tau and amyloid levels. However, it’s important to consult healthcare providers before starting any new supplements or medications that affect REM sleep.
This research underscores the importance of healthy sleep habits for those concerned about dementia risks, emphasizing the need to avoid factors that delay REM sleep and consult medical professionals regarding medications that impact cognitive health.
Source: https://www.dailymail.co.uk/health/article-14331209/wake-dreams-early-warning-signs-dementia-study.html