Working Overtime May be a Risk for Dementia

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Brain Blogger

By Jennifer Gibson, PharmDcloseJennifer Gibson, PharmD Name: Jennifer Gibson
Site: http://brainblogger.com

Many occupations can make you feel like you are losing your mind, but new evidence suggests that long working hours may actually lead to cognitive decline. Notably, cognitive impairment in midlife is already established as a risk factor for Alzheimer’s Disease and other forms of dementia. A new report from the Whitehall II Study, published in the American Journal of Epidemiology finds that long working hours in midlife are associated with a decline of cognitive function, and possibly dementia.

Earlier studies from the Whitehall Study group and related evaluations reported that long working hours are associated with cardiovascular and immunologic disorders, reduced sleep quality and duration, unhealthy lifestyle choices, and overall adverse health outcomes. Data examining the association between work hours and cognitive function is scarce, but the current study attempted to evaluate the link, since risk factors in midlife are important predictors of dementia in late life. For the cross-sectional study of 248 automotive workers in Britain, participants completed numerous tests related to memory and vocabulary, as well as general health, psychological well being, and physical functioning. People who worked more than 55 hours per week had significantly lower scores on vocabulary and reasoning tests at baseline and follow-up 5 years later, compared with those who worked 35 to 40 hours per week. The results were not changed when confounding factors were considered, including age, sex, marital status, education, occupation, income, and health risk factors.

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