Poor Sleep, Job Stress Up Risk of Cardiovascular Death in Hypertensive Employees
Work stress and impaired sleep are linked to a threefold higher risk of cardiovascular death in employees with hypertension.
(Photo courtesy: AFP Relaxnews/ Tharakorn/ Istock.com)
You might want to make changes to your lifestyle as soon as possible — if you suffer from hypertension, work-related stress and impaired sleep.
A new study has warned of the dangerous consequences of a “stressful job and poor sleep over many years.”
Work stress and impaired sleep are linked to a threefold higher risk of cardiovascular death in employees with hypertension, according to a research study published in the European Journal of Preventive Cardiology. The journal is published by the European Society of Cardiology (ESC).
Study author Professor Karl-Heinz Ladwig, of the German Research Centre for Environmental Health and the Medical Faculty, Technical University of Munich, said: "Sleep should be a time for recreation, unwinding, and restoring energy levels. If you have stress at work, sleep helps you recover. Unfortunately, poor sleep and job stress often go hand in hand, and when combined with hypertension the effect is even more toxic."
The study — first to examine the combined effects of work stress and impaired sleep on death from cardiovascular disease in hypertensive workers-- included 1,959 hypertensive workers aged 25-65, without cardiovascular disease or diabetes.
Compared to those with no work stress and good sleep, people with both risk factors had a three times greater likelihood of death from cardiovascular disease, Science Daily reported. People with work stress alone had a 1.6-fold higher risk while those with only poor sleep had a 1.8-times higher risk.
During an average follow-up of nearly 18 years, the absolute risk of cardiovascular death in hypertensive staff increased in a stepwise fashion with each additional condition. Employees with both work stress and impaired sleep had an absolute risk of 7.13 per 1,000 person-years compared to 3.05 per 1,000-person-years in those with no stress and healthy sleep. Absolute risks for only work stress or only poor sleep were 4.99 and 5.95 per 1,000 person-years, respectively.
In the study, work stress was defined as jobs with high demand and low control — for example when an employer wants results but denies authority to make decisions. "If you have high demands but also high control, in other words, you can make decisions, this may even be positive for health," said Professor Ladwig. "But being entrapped in a pressured situation that you have no power to change is harmful."
Impaired sleep was defined as difficulties falling asleep and/or maintaining sleep. "Maintaining sleep is the most common problem in people with stressful jobs," said Professor Ladwig. "They wake up at 4 o'clock in the morning to go to the toilet and come back to bed ruminating about how to deal with work issues."
"These are insidious problems," noted Professor Ladwig. "The risk is not having one tough day and no sleep. It is suffering from a stressful job and poor sleep over many years, which fade energy resources and may lead to an early grave."
Professor Ladwig said each condition is a “risk factor on its own and there is cross-talk among them, meaning each one increases risk of the other. Physical activity, eating healthily and relaxation strategies are important, as well as blood pressure lowering medication if appropriate."
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