When assessing a patient's risk for heart disease, doctors take into account such factors as age, cholesterol and smoking status. A new study suggests an additional measure: long working hours.
People who worked 11 hours or more per day were far more likely to develop heart trouble over a 12-year period, compared with similar subjects who worked seven to eight hours a day, the new study found. It was published Monday in Annals of Internal Medicine.
In the early 1990s, British researchers examined 7,095 adults aged 39 to 62, including 2,109 women, and used the information to score each subject's risk for coronary heart disease. About 10 percent reported long workdays.
Over 12.3 years of follow-up on average, 29 participants died of heart disease and 163 suffered nonfatal heart attacks.
Those who had reported working 10 or more hours a day were not at significantly greate