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Risk of female-specific cancers according to obesity and menopausal status in 2•7 million Korean women: Similar trends between Korean and Western women
BACKGROUND: Studies examining the relationship between obesity and female-specific cancers have been mainly conducted in Western populations. We aimed to investigate the risk of female-specific cancers according to obesity and menopausal status using a nationwide cohort in Korea. METHODS: We identif...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8315398/ https://www.ncbi.nlm.nih.gov/pubmed/34327357 http://dx.doi.org/10.1016/j.lanwpc.2021.100146 |
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author | Park, In Sil Kim, Se Ik Han, Youngjin Yoo, Juhwan Seol, Aeran Jo, HyunA Lee, Juwon Wang, Wenyu Han, Kyungdo Song, Yong Sang |
author_facet | Park, In Sil Kim, Se Ik Han, Youngjin Yoo, Juhwan Seol, Aeran Jo, HyunA Lee, Juwon Wang, Wenyu Han, Kyungdo Song, Yong Sang |
author_sort | Park, In Sil |
collection | PubMed |
description | BACKGROUND: Studies examining the relationship between obesity and female-specific cancers have been mainly conducted in Western populations. We aimed to investigate the risk of female-specific cancers according to obesity and menopausal status using a nationwide cohort in Korea. METHODS: We identified 2,708,938 women from the National Health Insurance Service cohort, and obtained baseline body mass index (BMI), waist circumference (WC), and other healthcare data, measured and collected during a health examinations and cancer-screening survey. By setting a normal weight/WC group (BMI, 18•5–22•9 kg/m(2) or WC, 80•0–84•9 cm) as the reference, we conducted multivariate analyses using the Cox proportional hazard model to estimate adjusted hazard ratios (aHRs) and 95% confidence intervals (95% CIs) for each cancer. FINDINGS: The total follow-up duration was 22389854•63 person-years. In post-menopausal women, the risk of breast, endometrial, and ovarian cancers significantly increased as the BMI classification level increased from normal to class II obesity (aHRs [95% CIs], 1•49 [1•38–1.61], 2•11 [1•81–2•46], and 1•38 [1•20–1•58], respectively). The risk of breast and endometrial cancers also increased as the WC classification increased from < 75•0 to ≥ 95•0 cm. With a WC of 80•0–84•9 cm as the reference, the lowest risk of breast and endometrial cancers was observed in WC < 75•0 cm (aHRs [95% CIs], 0•85 [0•81–0•89] and 0•75 [0•67–0•84], respectively) while the highest risk was observed in WC ≥ 95•0 cm (aHRs [95% CIs], 1•19 [1•10–1•29] and 1•56 [1•33–1•82], respectively). In pre-menopausal women, the risk of breast cancer significantly decreased in those with class I and II obesity compared to those with normal BMI (aHRs [95% CIs], 0•96 [0•92–0•999] and 0•89 [0•81–0•97], respectively), whereas the trends of endometrial and ovarian cancer incidence in pre-menopausal women were similar to those observed in post-menopausal women. For cervical cancer, only class II obesity was significantly associated with increased risks in both post-menopausal and pre-menopausal women (aHRs [95% CIs], 1•18 [1•01–1•39] and 1•27 [1•02–1•57], respectively). INTERPRETATION: In this large population-based cohort study in Korean women, we observed that the impact of obesity on the development of female-specific cancers differs according to the malignancy type and menopausal status. Similar trends were observed between Korean and Western women. FUNDING: The Korea Health Industry Development Institute (no. HI16C2037). |
format | Online Article Text |
id | pubmed-8315398 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-83153982021-07-28 Risk of female-specific cancers according to obesity and menopausal status in 2•7 million Korean women: Similar trends between Korean and Western women Park, In Sil Kim, Se Ik Han, Youngjin Yoo, Juhwan Seol, Aeran Jo, HyunA Lee, Juwon Wang, Wenyu Han, Kyungdo Song, Yong Sang Lancet Reg Health West Pac Research Article BACKGROUND: Studies examining the relationship between obesity and female-specific cancers have been mainly conducted in Western populations. We aimed to investigate the risk of female-specific cancers according to obesity and menopausal status using a nationwide cohort in Korea. METHODS: We identified 2,708,938 women from the National Health Insurance Service cohort, and obtained baseline body mass index (BMI), waist circumference (WC), and other healthcare data, measured and collected during a health examinations and cancer-screening survey. By setting a normal weight/WC group (BMI, 18•5–22•9 kg/m(2) or WC, 80•0–84•9 cm) as the reference, we conducted multivariate analyses using the Cox proportional hazard model to estimate adjusted hazard ratios (aHRs) and 95% confidence intervals (95% CIs) for each cancer. FINDINGS: The total follow-up duration was 22389854•63 person-years. In post-menopausal women, the risk of breast, endometrial, and ovarian cancers significantly increased as the BMI classification level increased from normal to class II obesity (aHRs [95% CIs], 1•49 [1•38–1.61], 2•11 [1•81–2•46], and 1•38 [1•20–1•58], respectively). The risk of breast and endometrial cancers also increased as the WC classification increased from < 75•0 to ≥ 95•0 cm. With a WC of 80•0–84•9 cm as the reference, the lowest risk of breast and endometrial cancers was observed in WC < 75•0 cm (aHRs [95% CIs], 0•85 [0•81–0•89] and 0•75 [0•67–0•84], respectively) while the highest risk was observed in WC ≥ 95•0 cm (aHRs [95% CIs], 1•19 [1•10–1•29] and 1•56 [1•33–1•82], respectively). In pre-menopausal women, the risk of breast cancer significantly decreased in those with class I and II obesity compared to those with normal BMI (aHRs [95% CIs], 0•96 [0•92–0•999] and 0•89 [0•81–0•97], respectively), whereas the trends of endometrial and ovarian cancer incidence in pre-menopausal women were similar to those observed in post-menopausal women. For cervical cancer, only class II obesity was significantly associated with increased risks in both post-menopausal and pre-menopausal women (aHRs [95% CIs], 1•18 [1•01–1•39] and 1•27 [1•02–1•57], respectively). INTERPRETATION: In this large population-based cohort study in Korean women, we observed that the impact of obesity on the development of female-specific cancers differs according to the malignancy type and menopausal status. Similar trends were observed between Korean and Western women. FUNDING: The Korea Health Industry Development Institute (no. HI16C2037). Elsevier 2021-04-27 /pmc/articles/PMC8315398/ /pubmed/34327357 http://dx.doi.org/10.1016/j.lanwpc.2021.100146 Text en © 2021 Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Park, In Sil Kim, Se Ik Han, Youngjin Yoo, Juhwan Seol, Aeran Jo, HyunA Lee, Juwon Wang, Wenyu Han, Kyungdo Song, Yong Sang Risk of female-specific cancers according to obesity and menopausal status in 2•7 million Korean women: Similar trends between Korean and Western women |
title | Risk of female-specific cancers according to obesity and menopausal status in 2•7 million Korean women: Similar trends between Korean and Western women |
title_full | Risk of female-specific cancers according to obesity and menopausal status in 2•7 million Korean women: Similar trends between Korean and Western women |
title_fullStr | Risk of female-specific cancers according to obesity and menopausal status in 2•7 million Korean women: Similar trends between Korean and Western women |
title_full_unstemmed | Risk of female-specific cancers according to obesity and menopausal status in 2•7 million Korean women: Similar trends between Korean and Western women |
title_short | Risk of female-specific cancers according to obesity and menopausal status in 2•7 million Korean women: Similar trends between Korean and Western women |
title_sort | risk of female-specific cancers according to obesity and menopausal status in 2•7 million korean women: similar trends between korean and western women |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8315398/ https://www.ncbi.nlm.nih.gov/pubmed/34327357 http://dx.doi.org/10.1016/j.lanwpc.2021.100146 |
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