The Growing Health Hazard of Stress in the Workplace

Job-related stress is catching up with workers. A new study by Concordia University economists, published in BMC Public Health, has found that increased job stress causes workers to increasingly seek help from health professionals for physical, mental, and emotional ailments linked to job stress. Indeed, the number of visits to health care professionals is up to 26% for workers in high-stress jobs.

“These results show that people in medium-to-high stress jobs visit family doctors and specialists more often than workers with low job stress,” says Sunday Azagba, a Ph.D. candidate in the Concordia department of economics.

“Stress can adversely affect an individual’s immune system, thereby increasing the risk of disease,” study researcher Mesbah Sharaf says. “Numerous studies have linked stress to back pain, colorectal cancer, infectious disease, heart problems, headaches, and diabetes. Job stress may also heighten risky behaviors, such as smoking, drug and alcohol abuse, discourage healthy behaviors such as physical activity, proper diet, and increased consumption of fatty and sweet foods.”

Previous research has found that aging populations and prescription drugs increase the price of health care. Yet few studies have so far correlated workplace stress rates on health care costs.

In the United States, recent polls found that 70% of American workers consider their workplace a significant source of stress, whereas 51% report job stress reduces their productivity. “It is estimated that health care utilization induced by stress costs U.S. companies $68 billion annually and reduces their profits by 10%,” says Sharaf.

Scientists Find Stress-Appetite Link

Researchers have uncovered a mechanism by which stress increases food drive in rats. This new discovery, published online in the journal Neuron, could provide important insight into why stress is thought to be one of the underlying contributors to obesity.

Normally, the brain produces neurotransmitters (chemicals responsible for how cells communicate in the brain), called endocannabinoids, that send signals to control appetite. In this study the researchers found that when food is not present, a stress response occurs that temporarily causes a functional rewiring in the brain. This rewiring may impair the endocannabinoids’ ability to regulate food intake and could contribute to enhanced food drive.

The researchers also discovered that when they blocked the effects of stress hormones in the brain, the absence of food caused no change in the neural circuitry.

“These findings could help explain how the cellular communication in our brains may be overridden in the absence of food, says researcher Jaideep Bains, Ph.D. of the Hotchkiss Brain Institute at the University of Calgary. “Interestingly, these changes are driven not necessarily by the lack of nutrients but rather by the stress induced by the lack of food.”

If similar changes occur in the human brain, these findings might have several implications for human health.

“For example, if we elect to pass over a meal, the brain appears to simply increase the drive in pathways leading to increased appetite,” explains Quentin Pittman, Ph.D. “Furthermore, the fact that the lack of food causes activation of the stress response might help explain the relationship between stress and obesity.”

The Better Choice: No Job or Bad Job?

Being unemployed can be stressful, but the psychological toll of having a poorly paid, demanding job can be just as bad for mental health as having no job at all, a new study finds.

In addition, becoming employed isn’t always a boon for mental health. Study participants who transitioned from being unemployed to being employed in a poor-quality job showed a worsening of their mental health, the researchers, from The Australian National University in Canberra, Australia, say.