Loading...
Two meta-analyses of published cohort studies have suggested that long working hours lead to excess risk for coronary heart disease (CHD). To explore this hypothesis further, researchers combined data from 25 prospective cohort studies from Europe, the U.S., and Australia that included data on working hours and incident CHD or stroke. The resulting data sets included more than 600,000 people who were followed for a mean 8.5 years for CHD and more than 500,000 people who were followed for a mean 7.2 years for stroke.
Compared with standard working hours (35–40 hours weekly), and after adjustment for age, sex, and socioeconomic status, long working hours (>55 hours weekly) were associated significantly with higher risk for incident CHD (relati…