Study: Demanding jobs increase heart problem risks

COPENHAGEN, Denmark

Danish researchers studied more than 12,000 nurses between the ages of 45-and-64 over a period of 15 years.

The study showed nurses who described their stress as being a little too high were 25 percent more likely to have ischemic heart disease than those who called it manageable -- that's when the heart doesn't get enough blood and oxygen.

The heart disease risk increased by 50 percent for those who called their stress level much too high.

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