London: Stress at work is highly unlikely to be a cause of the four most common types of cancer including colorectal, lung, breast and prostate, according to a large international review of previous research.Around 90 percent of cancers are linked to environmental exposures and whilst some exposures are well recognised (such as UV radiation and tobacco smoke), others are not (psychological factors such as stress).Stress can cause chronic inflammation which has been shown to have various roles in the development of cancer, plus stressed individuals are more likely to smoke, consume excessive amounts of alcohol and be obese - all of which are cancer risk factors.So far, only a few studies have examined the associations between work-related stress and cancer risk. These also had unclear conclusions.Researchers from the IPD-Work Consortium, led by the Finnish Institute of Occupational Health and University College London therefore carried out a meta-analysis of 12 studies involving 116,000 participants aged 17 to 70, from Finland, France, the Netherlands, Sweden, Denmark, and the UK.
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