Working can really kill you

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You need to constantly ask yourself, does it really worth working nites and days for your job. Of course we work is to sustain our living expenses, but again does it really worth jeopardizing our life? The answer is no and the reason is very simple, because work really can kill you, whereby the on the job stress raises the risk of heart disease by disrupting the body's internal systems.

According to a long-running study involving more than 10,000 British civil servants also suggest stress-induced biological changes may play a more direct role than previously thought.

Heart disease is the world's leading cause of death. It is caused by fatty deposits that harden and block arteries, high blood pressure which damages blood vessels, and other factors.

The researchers measured stress among the civil servants by asking questions about their job demands such as how much control they had at work, how often they took breaks, and how pressed for time they were during the day.

The team conducted seven surveys over a 12-year period and found chronically stressed workers -- people determined to be under severe pressure in the first two of the surveys -- had a 68 percent higher risk of developing heart disease.

The link was strongest among people under 50.

Behavior and biological changes likely explain why stress at work causes heart disease, Chandola said. For one, stressed workers eat unhealthy food, smoke, drink and skip exercise -- all behaviors linked to heart disease.

In the study, stressed workers also had lowered heart rate variability -- a sign of a poorly-functioning weak heart -- and higher-than-normal levels of cortisol, a "stress" hormone that provides a burst of energy for a fight-or-flight response.

Too much cortisol circulating in the blood stream can damage blood vessels and the heart.