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Yan F, Eshak ES, Arafa A, Tamakoshi A, Iso H. Vitamin K Intake and Risk of Lung Cancer: The Japan Collaborative Cohort Study. J Epidemiol 2023; 33:536-542. [PMID: 35871570 PMCID: PMC10483107 DOI: 10.2188/jea.je20220063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 07/06/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Limited reports from prospective human studies investigated the possible role of vitamin K in the development of lung cancer although vitamin K's anticarcinogenic activities were verified from several in vitro and in vivo studies. We investigated the associations between total vitamin K intake from food and the development of lung cancer based on this large prospective cohort study. METHODS A validated food frequency questionnaire was used to examine vitamin K intake among 42,166 (16,341 men and 25,825 women) at the Japan Collaborative Cohort Study's baseline (1988-1990). Hazard ratios (HRs) and 95% confidence intervals (CIs) of incident lung cancer were calculated using the Cox proportional hazard regression method based on vitamin K consumption quartiles. RESULTS 430 cases (308 males and 122 women) of lung cancer were documented during a total of 564,127 person-years of follow-up (median follow-up, 14.6 years). Vitamin K consumption was shown to be inversely related to lung cancer risk; the multivariable hazard ratio [HR] for the highest versus lowest quartiles was 0.67 (95% confidence interval [CI], 0.46-0.96; P for trend = 0.010). This relationship appears to be stronger in males (HR 0.62; 95% CI, 0.40-0.96; P for trend = 0.016) than in females (HR 0.82; 95% CI, 0.42-1.61; P for trend = 0.39) (P for interaction = 0.012), and in ever smokers (HR 0.57; 95% CI, 0.36-0.91; P for trend = 0.006) than in never smokers (HR 0.79; 95% CI, 0.40-1.55; P for trend = 0.37) (P for interaction = 0.30). The individuals' age, body mass index, or alcohol consumption status had no effect on the observed connection. CONCLUSION Vitamin K consumption reduces the risk of lung cancer. More research is needed to clarify the molecular processes behind this connection.
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Affiliation(s)
- Fangyu Yan
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ehab S. Eshak
- Department of Public Health and Preventive Medicine, Faculty of Medicine, Minia University, Minia, Egypt
- Advanced Clinical Epidemiology, Medical Data Science, Osaka University Graduate School of Medicine, Osaka, Japan
- Public Health, School of Health, Calvin University, Michigan, USA
| | - Ahmed Arafa
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
- Department of Public Health, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Akiko Tamakoshi
- Department of Public Health, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroyasu Iso
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
- Institute for Global Health Policy Research, Bureau of International Health Cooperation, National Center for Global Health and Medicine, Tokyo, Japan
| | - the JACC Study Group
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Public Health and Preventive Medicine, Faculty of Medicine, Minia University, Minia, Egypt
- Advanced Clinical Epidemiology, Medical Data Science, Osaka University Graduate School of Medicine, Osaka, Japan
- Public Health, School of Health, Calvin University, Michigan, USA
- Department of Public Health, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
- Department of Public Health, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Global Health Policy Research, Bureau of International Health Cooperation, National Center for Global Health and Medicine, Tokyo, Japan
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Thiravetyan B, Vathesatogkit P. Long-Term Effects of Cigarette Smoking on All-Cause Mortality and Cardiovascular Outcomes in Thai Population: Results From a 30-Year Cohort Study. Asia Pac J Public Health 2022; 34:761-769. [PMID: 35703388 DOI: 10.1177/10105395221106860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Despite the overwhelming evidences on the health consequences of smoking, studies in Asian population in low-to-middle income countries are very limited. Baseline data of a prospective cohort study were collected in year 1985. Endpoints regarding all-cause mortality and major adverse cardiovascular events (MACE) were followed for 30 years. Cox proportional hazard models were used for analysis. Participants had an average age of 43 years, 23% were female, and 43% were current smokers. All-cause mortality was significantly higher in ex-smokers (hazard ratio [HR] 1.32) and current smokers (HR 1.70) when compared with never smokers. Participants with any history of smoking had significantly higher risk of developing MACE. Furthermore, all-cause death, cardiovascular death, and MACE increased with increasing pack years. Statistically significant dose-response relationships were established. Therefore, cigarette smoking increased the risk of all-cause mortality, cardiovascular mortality, and MACE in Thai population. Results emphasized the importance of tobacco control in Thailand.
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Affiliation(s)
- Ben Thiravetyan
- Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Prin Vathesatogkit
- Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Dhungel B, Murakami T, Gilmour S, Ikeda S, Wada K. Occupation- and industry-specific cancer mortality among Japanese women from 1980 to 2015. BMC Public Health 2022; 22:2003. [PMID: 36320013 PMCID: PMC9628126 DOI: 10.1186/s12889-022-14304-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/07/2022] [Accepted: 09/29/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The number of women in Japan who continue working after childbirth is on the rise. Over the past few years, Japan's cancer mortality rate has increased. About 50% of all cancer deaths among Japanese women aged 25-64 are caused by lung, gastric, pancreatic and colorectal cancers. This study aims to examine the difference in mortality risk for key cancers among women and explore the effect of the economic crisis in the mid-1990s separately for occupational and industrial categories. METHODS Data from 1980 to 2015 were gathered from the Japanese Population Census and National Vital Statistics conducted in the same year. A Poisson regression analysis was used to estimate mortality risk and mortality trends for lung, gastric, pancreatic and colorectal cancer among Japanese working women aged 25-64 years. RESULTS Across most industrial and occupational groups, the trends in age-standardised cancer mortality rate for women have declined. Workers in management, security and transportation have a higher cancer mortality risk than sales workers. The risk of death from all four cancers is higher for workers in the mining and electricity industries than for wholesale and retail workers. CONCLUSION To improve the health and well-being of employed Japanese women, it is crucial to monitor cancer mortality trends. Using these population-level quantitative risk estimates, industry- and occupation-specific prevention programmes can be developed to target women at higher cancer risk and enable the early detection and treatment of cancer.
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Affiliation(s)
- Bibha Dhungel
- grid.419588.90000 0001 0318 6320Graduate School of Public Health, St. Luke’s International University, Tsukiji, Tokyo Japan ,Department of Health Policy, National Centre for Child Health and Development, Setagaya, Tokyo Japan
| | - Tomoe Murakami
- grid.411731.10000 0004 0531 3030Graduate School of Medicine, International University of Health and Welfare, 4-1-26 Akasaka, 107-8402 Minato City, Tokyo, Japan
| | - Stuart Gilmour
- grid.419588.90000 0001 0318 6320Graduate School of Public Health, St. Luke’s International University, Tsukiji, Tokyo Japan
| | - Shunya Ikeda
- grid.411731.10000 0004 0531 3030Graduate School of Medicine, International University of Health and Welfare, 4-1-26 Akasaka, 107-8402 Minato City, Tokyo, Japan
| | - Koji Wada
- grid.411731.10000 0004 0531 3030Graduate School of Medicine, International University of Health and Welfare, 4-1-26 Akasaka, 107-8402 Minato City, Tokyo, Japan
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Okui T. An analysis of health inequalities depending on educational level using nationally representative survey data in Japan, 2019. BMC Public Health 2021; 21:2242. [PMID: 34893044 PMCID: PMC8662892 DOI: 10.1186/s12889-021-12368-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 11/30/2021] [Indexed: 12/29/2022] Open
Abstract
Background In recent years, socioeconomic differences in health statuses and behaviors have not been investigated from the nationally representative survey data in Japan. In this study, we showed differences in representative health behaviors and statuses depending on educational level using a nationally representative survey data in Japan. Methods Aggregated (not individual level) data from the Comprehensive Survey of Living Conditions in 2019 were used to examine the association between educational level and outcome status of psychological distress (K6 scores > = 5), self-rated health, smoking, alcohol drinking, and cancer screening participation (stomach, lung, colorectal, breast, and uterine cancers). Data of 217,179 households in Japan were aggregated by the Ministry of Health, Labour, and Welfare in the survey, and the data of the estimated number of household members and persons corresponding to each response option for the questions in all of Japan were used. Five-year age groups from 20 to 24 to 80–84 years and over 84 years were analyzed, and the prevalence or participation rate by educational level were calculated. In addition, the age-standardized prevalence or participation rate according to educational level were also calculated by sex. Moreover, a Poisson regression model was applied for evaluating an association of educational level with the outcomes. Results As a result, a clear gradient by educational level was observed in almost all the age groups for the prevalence of psychological distress, poor self-rated health, and smoking and participation rates in cancer screening, and high educational level were associated with better health-related behaviors and statuses. Conversely, drinking prevalence was shown to be higher rather in highly educated people. In addition, a statistically significant association of educational level with all the outcomes was observed. Conclusion It was shown that disparities in health behaviors and statuses still persisted in recent years, and the findings suggested that further measures should be taken to tackle this disparity.
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Affiliation(s)
- Tasuku Okui
- Medical Information Center, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
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Okui T. Erratum: Okui, T. Socioeconomic Disparities in All-Cause and Cause-Specific Mortality Rates among Municipalities in Japan, 1999-2019. Int. J. Environ. Res. Public Health 2020, 17, 9213. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18115781. [PMID: 34072282 PMCID: PMC8198534 DOI: 10.3390/ijerph18115781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 11/16/2022]
Affiliation(s)
- Tasuku Okui
- Medical Information Center, Kyushu University Hospital, Fukuoka City 812-8582, Japan
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