#DeepSleep

New findings underscore that sleep is not equal across its stages. Deep sleep and REM sleep are emerging as vital protectors of brain health, with important implications for dementia risk and cognitive aging. The latest insights, highlighted in a major national publication, show that the quality and stages of sleep matter as much as total hours slept.

For Thais facing rising sleep problems—from urban insomnia to undiagnosed sleep apnea—understanding how different sleep stages affect the brain has practical meaning. The link between insufficient restorative sleep and higher dementia risk adds urgency to an issue often overshadowed by daily stress and nightlife culture.

A wave of recent scientific findings underscores that not all sleep is created equal—deep sleep and rapid eye movement (REM) sleep are emerging as key guardians of brain health, with profound implications for dementia risk and cognitive aging. The latest research, recently highlighted in a New York Times report, confirms that beyond simply getting enough hours of sleep, the specific quality and stages of sleep matter deeply for long-term mental wellbeing (NY Times, 2025).