Why Working More Than 8 Hours a Day Can Kill You

Forbes

If you're accustomed to being the last one to leave the office, new research may offer you cause to rethink your routine.

The study, published in the American Journal of Epidemiology, shows that a combination of stress, raised blood pressure and unhealthy diets stemming from long working hours may be the cause of thousands of workers' serious health problems.

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The study combined the results of different studies over the last 50 years and found that spending too long in the office resulted in a 40 to 80 percent greater chance of heart disease compared to an eight hour work day.

The latest findings discovered by scientists at the Finnish Institute of Occupational Health support results from a 2011 British survey that revealed that doing more than 11 hours of work a day raised heart disease risks by 67 percent.

Lead researcher Dr. Marianna Virtanen and her team gathered data from 12 different studies going back to 1958, when researchers first suggested that working long hours could be linked to poor heart health. In total, the studies involved more than 22,000 participants, from Britain, the USA, Japan, Sweden, Finland, Denmark and the Netherlands.

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"There are several potential mechanisms that may underlie the association between long working hours and heart disease," study authors wrote. "One is prolonged exposure to psychological stress."

Researchers said that other factors could be increased levels of the stress hormone cortisol, poor eating habits and lack of physical activity due to limited leisure time.

Bottom line:  ask yourself if those extra hours in the office everyday are really worth it, or if they're doing you more long-term harm than good.

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