ArticleBMC public health2012
Long working hours and metabolic syndrome among Japanese men: a cross-sectional study.
Article in BMC public health, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.
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Who cites it
35 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Long Working Hours and Risk of Cardiovascular Disease.Current cardiology reports · 2018Pooled it
- Long working hours and alcohol use: systematic review and meta-analysis of published studies and unpublished individual participant data.BMJ (Clinical research ed.) · 2015Pooled it
- Association between working ≥10 hours per day and satisfaction with work environment among wage workers in Korea: a cross-sectional study using data from the 7th Korean Working Conditions Survey.Annals of occupational and environmental medicine · 2026Article
- Association between obesity and medical expenditures among Japanese adults treated for diabetes: A secondary analysis.PloS one · 2026Article
- Association between daily long working hours and actigraphic sleep, vigilance, blood pressure and psychological responses: a 10-day observational study among Japanese daytime workers.Occupational and environmental medicine · 2025Observational
- Research advances inAnimal nutrition (Zhongguo xu mu shou yi xue hui) · 2025Review
- Night shift-induced circadian disruption: links to initiation of non-alcoholic fatty liver disease/non-alcoholic steatohepatitis and risk of hepatic cancer.Hepatoma research · 2024Article
- Are different perceived stressors associated with metabolic syndrome: a longitudinal cohort study of adults in central Iran.Journal of diabetes and metabolic disorders · 2023Article
- Characteristics of long working hours and subsequent psychological and physical responses: JNIOSH cohort study.Occupational and environmental medicine · 2023Article
- Labour-Market Characteristics and Self-Rated Health: Evidence from the China Health and Retirement Longitudinal Study.International journal of environmental research and public health · 2023Article
- Impact of Reduced Working Hours and Night Work Hours on Metabolic Syndrome: A Quasi-Experimental Study.Safety and health at work · 2023Article
- Metabolic and Obesity Phenotype Trajectories in Taiwanese Medical Personnel.International journal of environmental research and public health · 2022Article
- Health problems associated with single, multiple, and the frequency of months of objectively measured long working hours: a cohort study by the National Institute of Occupational Safety and Health, Japan.International archives of occupational and environmental health · 2022Article
- Impact of Long Working Hours and Shift Work on Unmet Health Care Need Among Korean Workers.Safety and health at work · 2022Article
- Age, Sex, and Profession Difference Among Health Care Workers With Burnout and Metabolic Syndrome in Taiwan Tertiary Hospital-A Cross-Section Study.Frontiers in medicine · 2022Article
- Poor worker's long working hours paradox: evidence from the Korea National Health and Nutrition Examination Survey, 2013-2018.Annals of occupational and environmental medicine · 2022Article
- Current Options and Future Directions for NAFLD and NASH Treatment.International journal of molecular sciences · 2021Review
- Burnout and metabolic syndrome among healthcare workers: Is subclinical hypothyroidism a mediator?Journal of occupational health · 2021Article
- Burnout and metabolic syndrome among different departments of medical center nurses in Taiwan-Cross-sectional study and biomarker research.Journal of occupational health · 2021Article
- Long Working Hours and Risk of Nonalcoholic Fatty Liver Disease: Korea National Health and Nutrition Examination Survey VII.Frontiers in endocrinology · 2021Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe link between long working hours and health has been extensively studied for decades. Despite global concern regarding metabolic syndrome, however, no studies to date have solely evaluated the relationship between long working hours and that syndrome. We therefore examined the association between long working hours and metabolic syndrome in a cross-sectional study.
methodsBetween May and October 2009, we collected data from annual health checkups and questionnaires from employees at a manufacturing company in Shizuoka, Japan. Questionnaires were returned by 1,601 workers (response rate: 96.2%; 1,314 men, 287 women). After exclusions, including women because of a lack of overtime work, the analysis was performed for 933 men. We calculated odds ratios (ORs) and 95% confidence intervals (CIs) for metabolic syndrome. Further, we conducted a stratified analysis by age-group (<40 years vs. ≥ 40 years).
resultsMetabolic syndrome was identified in 110 workers (11.8%). We observed a positive association between working hours and metabolic syndrome after adjusting for age, occupation, shift work, smoking status, frequency of alcohol consumption, and cohabiting status. Compared with subjects who worked 7-8 h/day, multivariate ORs for metabolic syndrome were 1.66 (95% CI, 0.91-3.01), 1.48 (95% CI, 0.75-2.90), and 2.32 (95% CI, 1.04-5.16) for those working 8-9 h/day, 9-10 h/day, and >10 h/day, respectively. Similar patterns were obtained when we excluded shift workers from the analysis. In age-stratified analysis, the corresponding ORs among workers aged ≥ 40 years were 2.02 (95% CI, 1.04-3.90), 1.21 (95% CI, 0.53-2.77), and 3.14 (95% CI, 1.24-7.95). In contrast, no clear association was found among workers aged <40 years.
conclusionsThe present study suggests that 10 h/day may be a trigger level of working hours for increased risk of metabolic syndrome among Japanese male workers.
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