Job stress has been known to cause heart problems in people who already have cardiovascular(心血管) disease. Now Finnish scientists have shown that  50  in healthy people the pressure of work can cause damage.
High blood pressure, lack of  51   , smoking and being overweight  52   to heart disease—a    53    killer in many industrialized countries.
But Mika Kivimaki, of the Finnish Institute of Occupational Health, and his colleagues, who studied the  54   histories of 812 healthy Finnish men and women in a metal industry company over 25 years, said job stress also plays an important role.
Workers who had the highest job-related stress levels at the start of the study were more than twice as  55    to die of heart disease,  56    the study published in The British Medical Journal.
Work stress  57   too much work as well as a lack of satisfaction and feeling undervalued and  58    .
Many people work long hours but if the effort is 59   the stress is minimized. Kivimaki said job pressure is damaging when being overworked is  60   with little or no control, unfair supervision and few career opportunities.
The British Heart Foundation said the results  61    earlier research showing that people in jobs with low control, such as manual workers, could be at greater  62   of heart disease than other employees.
“It is   63    for people to try to minimize levels of stress at work and for employers to  64   people to have more control at work and to be rewarded for their success,” the foundation said in a statement.

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