Nightly News   |  April 05, 2011

Heart risk linked to long work days

Long days at the office may be good for your career, but it may not be good for your health. NBC's Brian Williams reports.

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This content comes from Closed Captioning that was broadcast along with this program.

>>> tonight they are rethinking the phrase "hard work never killed anyone" after a new study that shows people who regularly work long hours are indeed at higher risk of heart disease . in fact, working 11-hour days increased heart disease risk by 67% for those who work seven to eight hours a day, i should say compared to those. heart disease is the number one cause of death worldwide.