Although the effects of sleepiness and fatigue has been extensively researched, the multi-layered, complex construct of fatigue has resulted in much of the research, particularly field-based studies, being confounded to some extent due to the many endogenous and exogenous variables that “interplay” simultaneously.
For several years, studies have linked hearing loss and dementia, but no major study has addressed the big question: Could using hearing aids reduce the risk of cognitive decline?
Research published in Occupational & Environmental Medicine in November, 2014, which examined the chronic effects of shift work on cognition, showed that shift work is associated with impaired cognitive function.