Working in night shifts variables can trigger serious health problems. However, a new Franco-British study has focused on finding out the impact on brain capacities, finding that may accelerate cognitive aging.
The study, published in the journal Occupational and Environmental Medicine , studied 3000 French workers between 32 and 62, for ten years.Half of the volunteers had worked on outdated for at least 50 days a year over schedule.
Using neuropsychological testing specialists analyzed three times (1996, 2001 and 2006) the cognitive abilities of the volunteers (learning, reasoning, memory, attention, reaction rate). Proving that people were changing schedules showed a cognitive decline of 6.5 years, says Jean-Claude MARQUIE, study coordinator. "He was known short-term effects, but it was unknown if they were kept for a long time," said the expert, quoted by AFP.
The research also showed that the effects caused by outdated schedules can be maintained for at least five years. However, this can vary depending on the individual.
Such studies are not new. In 2007 the International Agency for Research on Cancer (IARC) and the World Health Organization (WHO) classified carcinogen 'probable' in changing working night shifts, considering that affects the biological rhythm.
Furthermore, in 2011 a Swedish research claimed that night work hours increase the risk of multiple sclerosis at a young age. A year later, a French study showed that women who work at night have a 30% greater chance of developing breast cancer.
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