Total sleep duration declines with increasing age, as does the fraction of sleep spent in rapid eye movement (REM) sleep. The decline in REM is associated with increasing mortality, but it is not clear if this is a cause or a marker of declining health and declining brain function.
This prospective United Kingdom study involving 13,488 children shows an association between specific early childhood sleep problems and symptoms of psychosis in adolescence. Another specified early childhood sleep problem is associated with symptoms of borderline personality disorder in adolescence.
Intermittent fasting, which once was strictly in the purview of religion and health fads, has undergone a rapid increase in scientific interest. Studies now demonstrate the positive impact that various methods of intermittent fasting can have on overall health.
Bright light therapy (10,000 lux intensity for 30 minutes twice daily) and a low intensity control light showed similar efficacy in treatment of depression associated with Parkinson’s disease; the bright light therapy showed some advantages in improving subjective quality of sleep.
Prospective outcomes studies are demonstrating that individuals are not meeting their daily magnesium intake needs and this may be contributing to a number of chronic health conditions including diabetes, hypertension, short sleep, and some pain conditions.
Objective findings during polysomnography (REM sleep without atonia), as diagnosed with submentalis EMG recordings, may be a biomarker for synucleinopathies, such as Parkinson’s disease and multiple system atrophy.