At the end of a five-year study, the data showed that when someone worked 49 or more hours per week, their risk of developing sustained hypertension increased by 66%.
In a study three years ago in Hypertension, the journal of the American Heart Association, researchers looked at blood pressure of 3,500 office workers from three insurance companies in Canada. They collected data during three different periods over the course of five years. Each person’s resting blood pressure was measured in the morning in a clinical setting that was designed to resemble a doctor’s office. The employees were then outfitted with portable blood pressure monitors that they wore throughout their workdays. The devices checked their blood pressure every 15 minutes and gave a minimum of 20 readings a day.
The study’s authors set readings at or above 135/85 as the benchmark for high blood pressure. At the end of the five-year study, the data showed that when someone worked 49 or more hours per week, their risk of developing sustained hypertension increased by 66%. Employees who worked 41 to 48 hours a week were 33% more likely to have sustained high blood pressure.
The researchers also were interested in “masked hypertension,” a phenomenon in which someone’s blood pressure reading is in normal range when checked at the doctor’s office but is otherwise high. The AHA study found that extended work hours increased the employees’ risk of developing masked hypertension by 70%.
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Though the study wasn’t designed to explain why this would be the case, the researchers have some ideas. One is that when you’re working long hours, you’re not getting enough sleep, which has been shown to increase cardiovascular risk. Extended sitting also has been linked to high blood pressure.
And when you spend so much time sitting each day, you’re often not getting enough — or sometimes any — exercise,so encourage the people around you to balance his long hours with daily exercise, hourly breaks and better sleep hygiene is necessary.
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