Long working hours and cancer risk: a multi-cohort study

British Journal of Cancer
Katriina HeikkilaIPD-Work Consortium

Abstract

Working longer than the maximum recommended hours is associated with an increased risk of cardiovascular disease, but the relationship of excess working hours with incident cancer is unclear. This multi-cohort study examined the association between working hours and cancer risk in 116 462 men and women who were free of cancer at baseline. Incident cancers were ascertained from national cancer, hospitalisation and death registers; weekly working hours were self-reported. During median follow-up of 10.8 years, 4371 participants developed cancer (n colorectal cancer: 393; n lung cancer: 247; n breast cancer: 833; and n prostate cancer: 534). We found no clear evidence for an association between working hours and the overall cancer risk. Working hours were also unrelated the risk of incident colorectal, lung or prostate cancers. Working ⩾55 h per week was associated with 1.60-fold (95% confidence interval 1.12-2.29) increase in female breast cancer risk independently of age, socioeconomic position, shift- and night-time work and lifestyle factors, but this observation may have been influenced by residual confounding from parity. Our findings suggest that working long hours is unrelated to the overall cancer risk or the risk of lung...Continue Reading

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Citations

May 2, 2017·American Journal of Epidemiology·Sadie H ConwayRobert E Roberts
Dec 8, 2017·Nature Reviews. Cardiology·Mika Kivimäki, Andrew Steptoe
Jan 9, 2018·European Journal of Public Health·Jesper MortensenNaja Hulvej Rod
Apr 17, 2018·New Solutions : a Journal of Environmental and Occupational Health Policy : NS·Connie L EngelJeanne Rizzo
Jul 22, 2017·Current Medicinal Chemistry·G M FerriL Macinagrossa
Jun 17, 2021·Essays in Biochemistry·Carlos Perez KerkvlietCarol A Lange

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Methods Mentioned

BETA
hormone replacement therapy

Software Mentioned

Stata MP
SPSS
SAS
POLS

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