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Heart Disease Health Center

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Hard Physical Labor May Boost Heart Disease Risk

Researcher says higher mental stress, lower income could be factors

WebMD News from HealthDay

By Robert Preidt

HealthDay Reporter

THURSDAY, April 18 (HealthDay News) -- Demanding physical work may boost a person's risk of heart disease, two new studies suggest.

"Physicians know that high stress can be associated with increased risk of heart disease," said one expert not connected to the study, Dr. Lawrence Phillips, a cardiologist at NYU Langone Medical Center in New York City. "These two studies suggest that, in addition to normal life stressors, the physical demands a person experiences in the workplace can independently increase their risk as well."

"The reason for this [labor-linked risk] is unclear, but might be related to higher stress levels," Phillips said.

In one study, researchers looked at 250 patients who had suffered a first stroke and 250 who had suffered a first heart attack or other type of heart event. They were compared to a control group of 500 healthy people.

Stroke and heart patients were more likely to have physically demanding jobs than those in the control group, researchers found. After adjusting for age, sex and a number of lifestyle and health factors, they concluded that having a less physically demanding job was associated with a 20 percent lower risk of a heart event or stroke.

The findings suggest that people with physically demanding jobs should be considered an important target group for prevention of cardiovascular disease, said study author Dr. Demosthenes Panagiotakos, an associate professor of biostatistics and epidemiology at Harokopio University in Athens, Greece.

The results seem to conflict with recommendations that people should exercise to reduce their risk of heart trouble. But Panagiotakos said the increased risk of stroke and heart events among people with physically demanding jobs may be due to mental stress, while exercise helps reduce stress. He also said people with physically demanding jobs tend to have lower incomes, which might limit their access to health care.

The study suggests that leisure-time exercise might be important to "balance out" the physical stress encountered in laborious jobs, said Dr. Tara Narula, associate director of the cardiac care unit at Lenox Hill Hospital in New York City. She was not connected to the study.

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