According to an 11-year study, people who work at least 10 hours a day are more likely to suffer serious heart problems, including heart attacks, than people who only work seven hours a day.
There is apparently a little flexibility with the safe work time. If you put a couple extra hours in, it’s not associated with an increased heart problem risk.
While the findings don’t provide definitive proof of coronary heart disease caused by long work hours, experts believe that the link is due to the stress associated with being overworked.
There were 6,000 British civil servants who took part in the study. Of those, there were 369 deaths due to heart disease, non-fatal heart attacks and angina. Those who worked seven hours, or even one or two extra hours was not associated with an increased heart risk.
(via: Yahoo! Health)