Overtime may be hard on the heart

A just-released study followed 7,100 adults aged 39 to 62 who did not have coronary heart disease. Researchers found those who worked 11 hours or more per day had a 67 percent higher risk of developing heart disease than those who worked seven-to-eight hours.

But the authors caution the findings in the Annals of Internal Medicine may not apply to all workers. The people studied were at low risk for heart disease and did not include blue collar workers.

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