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Type 2 diabetes risk increases with longer working hours

By jeremyc | September 23, 2014

A recent study has found that while working longer hours may get bigger paychecks, it will also increase the risk of type 2 diabetes.

The study was a review of previous studies that looked at how working overtime affected the health of people of various socioeconomic statuses.

The study was led by Mika Kivimaki, PhD, of University College London, UK. It found that low-income people who did manual work and had longer shifts had a greater risk of diabetes than those who worked 35-40 hours per week.

For this study, the researchers looked at 19 unpublished and four published studies that involved 222,120 people worldwide with an average age of 7.6 years. A total 4,963 people contracted diabetes over the study duration.

On analysis, the researchers found that those who worked over 55 hours a week were 7% likelier to get diabetes than those who worked 35-40 hours a week. Those who were from lower socioeconomic groups and worked longer hours were 30% likelier to have diabetes than those who worked 35-40 hours.

The researchers concluded that while long hours alone did not raise diabetes risk substantially, the combination of it with manual/industrial labor did pose a significantly higher risk.

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