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UK Biobank Study of 95,559 Wrist Trackers Links REM and Deep Sleep Stages to Risk of 83 Diseases
A PLOS Medicine phenome-wide study of 95,559 UK Biobank participants found that more REM and deep sleep, measured by wrist accelerometers, was linked to lower risk of dozens of diseases including heart failure, dementia and type 2 diabetes — though the authors say the observatio…