Effect of long-term weight gain on the risk of breast cancer across women’s whole adulthood as well as hormone-changed menopause stages: A systematic review and dose–response meta-analysis - 06/10/21

Doi : 10.1016/j.orcp.2021.08.004

Yu Hao ^a,^b, Menglu Jiang ^a,^b, Yunqi Miao ^a,^b, Xu Li ^a,^b, Can Hou ^a,^b, Xiaofan Zhang ^a,^b, Hui Chen ^a,^b, Xiaorong Zhong ^c,^d, Jiayuan Li ^a,^b,⁎
^a Department of Epidemiology and Health Statistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
^b Non-communicable Diseases Research Center, West China-PUMC C.C. Chen Institute of Health, Sichuan Univetsity, Chengdu, Sichuan, China
^c Department of Head, Neck and Mammary Gland Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
^d Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu, Sichuan, China

^⁎Corresponding author at: Department of Epidemiology and Health Statistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, No. 16 Ren Min Nan Lu, Chengdu, Sichuan, 610041, China.Department of Epidemiology and Health StatisticsWest China School of Public Health and West China Fourth HospitalSichuan UniversityNo. 16 Ren Min Nan LuChengduSichuan610041China

Abstract

Adult weight gain is a good indicator of excess body fatness for breast cancer risk. However, little is known about the effect of weight gain during other special periods in women’s lifetime. A publication search in PubMed and Embase through April 2020 was conducted. A primary meta-analysis comparing the highest and lowest category and a secondary meta-analysis based on dose–response meta-analysis were performed to calculate risk estimates with 95% confidence intervals using a random-effects model. For postmenopausal breast cancer, the relative risk for highest vs. lowest category of adult weight gain and weight gain since menopause were 1.55 and 1.59 (RR = 1.55, 95% CI: 1.40, 1.71; RR = 1.59, 95% CI: 1.23, 2.05). For per 5 kg increase in adult weight gain, the summary RR of postmenopausal breast cancer was 1.08 (RR = 1.08, 95% CI: 1.07, 1.09), which is much stronger in Asian women (RR = 1.34, 95% CI: 1.22, 1.47). There was no significant finding among premenopausal women (RR = 1.00, 95% CI: 0.83, 1.21). Same as adult weight gain, weight gain since menopause might be an equivalent predictor for postmenopausal breast cancer risk. More studies are warranted to confirm the magnitude of this association further.

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Keywords : Breast cancer, Adiposity, Weight gain, Meta-analysis

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Adult weight gain and risk of breast cancer

Weight gain since menopause and risk of breast cancer

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Vol 15 - N° 5

P. 439-448 - septembre 2021 Retour au numéro

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Effect of long-term weight gain on the risk of breast cancer across women’s whole adulthood as well as hormone-changed menopause stages: A systematic review and dose–response meta-analysis - 06/10/21

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