Reducing job strain may lower risk of new mental illness cases
Sydney, May 15: If your workplace is supporting its employees by reducing their job strain, it may boost in preventing new cases of common mental illness from occurring up to 14 per cent, a new study suggests.
The findings, published in the journal Lancet Psychiatry, confirm that high job strain is associated with an increased risk of developing common mental disorders such as depression and anxiety amongst middle-aged workers.
Job strain is a term used to describe the combination of high work pace, intensity, and conflicting demands, coupled with low control or decision-making capacity.
"The results indicate that if we were able to eliminate job strain situations in the workplace, up to 14 per cent of cases of common mental illness could be avoided," said lead author Samuel Harvey, Associate Professor at the Black Dog Institute in Australia.
"These findings serve as a wake-up call for the role workplace initiatives should play in our efforts to curb the rising costs of mental disorders," Harvey added.
To determine levels of job strain, 6,870 participants completed questionnaires at age 45 testing for factors including decision authority, skill discretion and questions about job pace, intensity and conflicting demands.
The researchers also accounted for non-workplace factors including divorce, financial problems, housing instability, and other stressful life events like death or illness.
The models developed in this study controlled for individual workers' temperament and personality, their IQ, level of education, prior mental health problems and a range of other factors from across their early lives.
The final modelling suggested that those experiencing higher job demands, lower job control and higher job strain were at greater odds of developing mental illness by age 50, regardless of sex or occupational class.
"Workplaces can adopt a range of measures to reduce job strain, and finding ways to increase workers' perceived control of their work is often a good practical first step. This can be achieved through initiatives that involve workers in as many decisions as possible," Harvey, who is also affiliated with the University of New South Wales in Australia, noted.
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Assam's Byrnihat tops global pollution list; Delhi most polluted capital: Report
New Delhi (PTI): Thirteen of the world's top 20 most polluted cities are in India, with Byrnihat in Assam topping the list, according to a new report published on Tuesday.
The World Air Quality Report 2024 by Swiss air quality technology company IQAir said Delhi remains the most polluted capital city globally, while India ranked as the world's fifth most polluted country in 2024, down from third in 2023.
The report said India saw a 7 percent decline in PM2.5 concentrations in 2024, averaging 50.6 micrograms per cubic metre, compared to 54.4 micrograms per cubic metre in 2023. Yet, 13 of the world's 20 most polluted cities are in India.
Air pollution in Delhi worsened, with the annual average PM2.5 concentration rising from 102.4 micrograms per cubic metre in 2023 to 108.3 micrograms per cubic metre in 2024.
The Indian cities in the world's top 20 most polluted cities are Byrnihat, Delhi, Punjab's Mullanpur, Faridabad, Loni, Gurugram, Ganganagar, Greater Noida, Bhiwadi, Muzaffarnagar, Hanumangarh and Noida.
Overall, 35 percent of the Indian cities reported annual PM2.5 levels exceeding 10 times the WHO limit of 5 micrograms per cubic metre, the report said.
The high level of pollution in Byrnihat, a town on the border of Assam and Meghalaya, is due to emissions from local factories, including distilleries, iron and steel plants.
Delhi grapples with high air pollution year-round and the problem worsens in winter when unfavourable meteorological conditions, combined with vehicular emissions, paddy-straw burning, firecrackers and other local pollution sources, make the air quality hazardous.
Air pollution remains a serious health risk in India, reducing life expectancy by an estimated 5.2 years.
According to a Lancet Planetary Health study published last year, about 1.5 million deaths in India every year from 2009 to 2019 were potentially linked to long-term exposure to PM2.5 pollution.
PM2.5 refers to tiny air pollution particles smaller than 2.5 microns, which can enter the lungs and bloodstream, leading to breathing problems, heart disease and even cancer. Sources include vehicle exhaust, industrial emissions and the burning of wood or crop waste.
Former WHO chief scientist and health ministry advisor Soumya Swaminathan said India has made progress in air quality data collection but lacks sufficient action.
"We have the data; now we need action. Some solutions are easy like replacing biomass with LPG. India already has a scheme for this, but we must further subsidise additional cylinders. The first cylinder is free, but the poorest families, especially women, should receive higher subsidies. This will improve their health and reduce outdoor air pollution," she told PTI in an interview.
In cities, expanding public transport and imposing fines on certain cars could help. "A mix of incentives and penalties is necessary," she said.
"Finally, strict enforcement of emission laws is crucial. Industries and construction sites must comply with regulations and install equipment to cut emissions instead of taking shortcuts," the former director general of the Indian Council of Medical Research added.
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