Research on over 1 million electronic health records from Finland and Wales, coordinated by the UK Dementia Research Institute (2025), found that sleep disorder risks emerge up to 15 years before formal neurodegenerative disease diagnosis.
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The most impactful finding for preventive medicine
Sleep disorders are early warning signals preceding clinical diagnosis by a decade and a half. Every year without monitoring is a year lost for prevention.
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The association is independent of genetics
The association between sleep disorders and neurodegeneration persists even without genetic risk factors (APOE ε4, LRRK2). Disturbed sleep is an independent pathological pathway toward neurodegeneration.
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What are the relevant sleep disorders
Disorders identified as predictive: chronic insomnia, obstructive sleep apnoea (OSAS), REM sleep behaviour disorder (RBD), and restless legs syndrome.
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All measurable — at least partially — with advanced wearables.
The value of the Digital Twin in this 15-year window
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The Digital Twin identifies sleep profile deterioration in this critical window, when lifestyle interventions, OSAS treatment and nutritional protocols can still alter the biological trajectory.
Bedroom of an Engadine chalet just before dawn: cold bluish light from the window, pale linen sheets, a smart ring and watch resting on the nightstand; no faces.
Large-Scale EHR Analysis — UK Dementia Research Institute (2025) — https://www.psychiatrist.com/news/sleep-disorders-linked-to-higher-risk-of-dementia-and-parkinsons/ · www.psychiatrist.com
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