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Nabila S, Choi JY, Abe SK, Islam MR, Rahman MS, Saito E, Shin A, Merritt MA, Katagiri R, Shu XO, Sawada N, Tamakoshi A, Sakata R, Hozawa A, Kim J, Nagata C, Park SK, Kweon SS, Cai H, Tsugane S, Kimura T, Kanemura S, Sugawara Y, Wada K, Shin MH, Ahsan H, Boffetta P, Chia KS, Matsuo K, Qiao YL, Rothman N, Zheng W, Inoue M, Kang D. Differential patterns of reproductive and lifestyle risk factors for breast cancer according to birth cohorts among women in China, Japan and Korea. Breast Cancer Res 2024; 26:15. [PMID: 38254178 PMCID: PMC10801993 DOI: 10.1186/s13058-024-01766-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND The birth cohort effect has been suggested to influence the rate of breast cancer incidence and the trends of associated reproductive and lifestyle factors. We conducted a cohort study to determine whether a differential pattern of associations exists between certain factors and breast cancer risk based on birth cohorts. METHODS This was a cohort study using pooled data from 12 cohort studies. We analysed associations between reproductive (menarche age, menopause age, parity and age at first delivery) and lifestyle (smoking and alcohol consumption) factors and breast cancer risk. We obtained hazard ratios (HRs) with 95% confidence intervals (CIs) using the Cox proportional hazard regression analysis on the 1920s, 1930s, 1940s and 1950s birth cohorts. RESULTS Parity was found to lower the risk of breast cancer in the older but not in the younger birth cohort, whereas lifestyle factors showed associations with breast cancer risk only among the participants born in the 1950s. In the younger birth cohort group, the effect size was lower for parous women compared to the other cohort groups (HR [95% CI] 0.86 [0.66-1.13] compared to 0.60 [0.49-0.73], 0.46 [0.38-0.56] and 0.62 [0.51-0.77]). Meanwhile, a higher effect size was found for smoking (1.45 [1.14-1.84] compared to 1.25 [0.99-1.58], 1.06 [0.85-1.32] and 0.86 [0.69-1.08]) and alcohol consumption (1.22 [1.01-1.48] compared to 1.10 [0.90-1.33], 1.15 [0.96-1.38], and 1.07 [0.91-1.26]). CONCLUSION We observed different associations of parity, smoking and alcohol consumption with breast cancer risk across various birth cohorts.
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Grants
- R37 CA070867 NCI NIH HHS
- UM1 CA182910 NCI NIH HHS
- Ministry of Education of the Republic of Korea and the National Research Foundation of Korea
- Korea Multi-Center Cancer Cohort Study, National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning
- Shanghai Women’s Health Study, US National Cancer Institute
- Japan Public Health Center-Based Prospective Study (1 and 2), National Cancer Center Research and Development Fund
- Japan Collaborative Cohort Study, National Cancer Center Research and Development Fund (a grant-in-aid for cancer research)
- Life Span Study Cohort–Radiation Effects Research Foundation, The Japanese Ministry of Health, Labour and Welfare and the US Department of Energy
- Ohsaki National Health Insurance Cohort Study, National Cancer Center Research and Development Fund
- Korea National Cancer Center Cohort, National Cancer Center Research Grant
- Takayama Study, National Cancer Center Research and Development Fund
- The Namwon Study, Chonnam National University Hwasun Hospital Research grant
- Miyagi Cohort Study, National Cancer Center Research and Development Fund
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Affiliation(s)
- Salma Nabila
- Department of Biomedical Sciences, Seoul National University Graduate School, 103 Daehak-ro, Jongno-gu, 03080, Seoul, Republic of Korea
- BK21plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ji-Yeob Choi
- Department of Biomedical Sciences, Seoul National University Graduate School, 103 Daehak-ro, Jongno-gu, 03080, Seoul, Republic of Korea.
- BK21plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, Republic of Korea.
- Institute of Health Policy and Management, Seoul National University Medical Research Center, Seoul, Republic of Korea.
- Cancer Research Institute, Seoul National University, Seoul, Republic of Korea.
| | - Sarah Krull Abe
- Division of Prevention, National Cancer Center Institute for Cancer Control, Tokyo, Japan
| | - Md Rashedul Islam
- Division of Prevention, National Cancer Center Institute for Cancer Control, Tokyo, Japan
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan
| | - Md Shafiur Rahman
- Division of Prevention, National Cancer Center Institute for Cancer Control, Tokyo, Japan
- Research Center for Child Mental Development, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Eiko Saito
- National Center for Global Health and Medicine, Institute for Global Health Policy Research, Tokyo, Japan
| | - Aesun Shin
- Cancer Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Melissa A Merritt
- The Daffodil Centre, The University of Sydney, A Joint Venture with Cancer Council NSW, Sydney, Australia
| | - Ryoko Katagiri
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, Tokyo, Japan
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
| | - Xiao-Ou Shu
- Division of Epidemiology, Vanderbilt-Ingram Cancer Center, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Norie Sawada
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, Tokyo, Japan
| | - Akiko Tamakoshi
- Department of Public Health, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Ritsu Sakata
- Radiation Effects Research Foundation, Hiroshima, Japan
| | - Atsushi Hozawa
- Tohoku University Graduate School of Medicine, Sendai, Miyagi Prefecture, Japan
| | - Jeongseon Kim
- Graduate School of Cancer Science and Policy, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Sue K Park
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sun-Seog Kweon
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hui Cai
- Division of Epidemiology, Vanderbilt-Ingram Cancer Center, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Shoichiro Tsugane
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, Tokyo, Japan
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
| | - Takashi Kimura
- Department of Public Health, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Seiki Kanemura
- Tohoku University Graduate School of Medicine, Sendai, Miyagi Prefecture, Japan
| | - Yumi Sugawara
- Tohoku University Graduate School of Medicine, Sendai, Miyagi Prefecture, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Min-Ho Shin
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Habibul Ahsan
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Paolo Boffetta
- Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY, USA
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Kee Seng Chia
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - Keitaro Matsuo
- Division Cancer Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Japan
- Department of Cancer Epidemiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - You-Lin Qiao
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, Occupational and Environmental Epidemiology Branch, National Cancer Institute, Bethesda, MD, USA
| | - Wei Zheng
- Division of Epidemiology, Vanderbilt-Ingram Cancer Center, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Manami Inoue
- Division of Prevention, National Cancer Center Institute for Cancer Control, Tokyo, Japan
| | - Daehee Kang
- Cancer Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
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