If you want to be heart healthy, you might start by cutting back at work.
At least that’s the implication of a new study that, as The New York Times reports, finds that people who work 11 or more hours a day are at far greater risk of heart trouble than those who spend less time on the job.
The study, published in the Annals of Internal Medicine, tracked 7,095 healthy, middle-aged civil servants in the United Kingdom for an average of about 12 years, starting in the early 1990s. At the end of that study period, 29 had died of heart disease, and another 163 suffered, but survived, heart attacks.
Researchers found that 11 hours appears to be a key threshold. Subjects who worked 11 hours or more a day were 66 percent more likely to suffer, or succumb to, heart disease over the span of the study than their counterparts who worked seven or eight hours a day. Those who worked 10 to 11 hours a day, were only at 45 percent higher risk of heart trouble, according to Health.com.
Some experts questioned the conclusions drawn from the study, pointing out that related factors may be more of an issue than the time spent at work. “Somebody who works hard may eat fast food and not be very active, so it may not be the long hours that give them heart disease,” said Dr. Stephen Kopecky, a cardiologist at the Mayo Clinic who was not affiliated with the study. “It’s eating fast food and being inactive.”
Lead author Mika Kivimaki, a professor of social epidemiology at University College London, acknowledged the criticism, but said that it was possible that “the chronic experience of stress often associated with working long hours adversely affects metabolic processes,” which could then lead to heart trouble, or it could lead to depression and sleep problems.


