Saturday March 23, 2019

Human Body May Not Cope With Evening Stress, Study Reveals

The team first measured the diurnal rhythm of salivary cortisol levels from the volunteers and then exposed one group to stress test in the morning, and another to the evening

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Your body may not cope with evening stress: Study. Pixabay

Human bodies which experience stress in the evening release less cortisol — the primary stress hormone in humans — compared to stressful events in the morning, and thus may pose vulnerabilities, according to a new research.

The study, led by medical physiologist Yujiro Yamanaka at Japan’s Hokkaido University, the body’s central system reacts less strongly to acute psychological stress in the evening than it does in the morning, suggesting possible vulnerability to stressful events in the evening.

“Our study suggests a possible vulnerability to stress in the evening. However, it is important to take into account each individual’s unique biological clock and the time of day when assessing the response to stressors and preventing them,” Yamanaka commented.

The study, published in the journal Neuropsychopharmacology Reports, explored a small group of young and healthy volunteers with normal work hours and sleep habits to find out if the “hypothalamic-pituitary-adrenal” (HPA) axis responds differently to acute psychological stress according to the time of day.

The HPA axis connects the central nervous and endocrine systems of the body. Cortisol is released for several hours when the HPA axis is activated by a stressful event.

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Representational image. Pixabay

This helps provide the body with energy in the face of a perceived need for fight or flight. Cortisol levels are also regulated by a master circadian clock in the brain and are normally high in the morning and low in the evening.

The team first measured the diurnal rhythm of salivary cortisol levels from the volunteers and then exposed one group to stress test in the morning, and another to the evening.

Also Read- Millions Of Urban Children Worse Than Rural People: UNICEF

The researchers found that salivary cortisol levels increased significantly in the volunteers that took the stress test in the morning while no such response was observed in those that took the test in the evening.

“Our body can respond to the morning stress event by activating the HPA axis and sympathetic nervous system, but it needs to respond to evening stress event by activating the sympathetic nervous system only,” Yamanaka said. (IANS)

Next Story

Weigh Gain in Women Can Be Cause Due To High Stress Jobs: Study

Efforts to reduce work-related stress would likely achieve a decrease not only in weight gain but also in the incidence of ill health

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Indonesia, e-commerce, computer
Indonesian domestic workers attend a computer class during their day off at the Sekolah Indonesia Singapura (Indonesian School) in Singapore, Dec. 12, 2010. VOA

Are you gaining weight suddenly? Blame increased stress at workplace, say researchers who found that heavy pressure at work predisposes women to weight gain, irrespective of whether they have received an academic education.

The findings, led by the University of Gothenburg in Sweden researchers, showed that long-term exposure to high job demands played a part only for women. In just over half of the women who had been subjected to high demands, a major increase in weight took place over the 20 years.

This gain in weight was some 20 per cent higher than in women subject to low job demands.

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Your body may not cope with evening stress: Study. Pixabay

On the other hand, women and men with a low degree of control in their work more frequently gained considerable weight, defined as a weight gain of 10 per cent or more.

“We were able to see that high job demands played a part in women’s weight gain, while for men there was no association between high demands and weight gain,” said lead author Sofia Klingberg, a researcher at the varsity.

“When it came to the level of demands at work, only the women were affected. We haven’t investigated the underlying causes, but it may conceivably be about a combination of job demands and the greater responsibility for the home that women often assume. This may make it difficult to find time to exercise and live a healthy life,” Klingberg added,

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Depression has significantly increased the risk of early death in women. Wikimedia

For the study, published in the journal International Archives of Occupational and Environmental Health, the team included 3,872 women and men who were investigated on three occasions over a 20-year period with respect to such variables as body weight and demands and control at work.

Also Read: Does Your Home or Office Have Enough Fire Safety?

They were followed either from age 30 to 50 or from 40 to 60.

Efforts to reduce work-related stress would likely achieve a decrease not only in weight gain but also in the incidence of ill health, including cardiovascular disease and diabetes, the researchers noted. (IANS)