Association between body mass index and risk of breast cancer according to breast cancer subtypes: A systematic review and meta-analysis

The Breast 2026 Open access

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Authors: Chiara Dauccia, Marco Bruzzone, Luca Arecco, Eva Blondeaux, Marianna Sirico, Riccardo Gerosa, Maria Alice Franzoi, Mariana Brandão, Lorenzo Perrone, Paolo Pedrazzoli, Christine Desmedt, Serena Di Cosimo
+5 more Claudio Vernieri, L. Collet, Matteo Lambertini, Evandro de Azambuja, Elisa Agostinetto
DOI: 10.1016/j.breast.2026.104710
Cited by: 7
References: 52

Abstract

Background Higher body mass index (BMI) is a risk factor for breast cancer (BC) development, but the relationship with BC subtypes in pre- and post-menopausal women remains unclear. Methods We performed a systematic search from PubMed, Embase and Cochrane databases until 09/24 (CRD42020206108) for cohort and case-control studies assessing the association between BMI and BC subtypes and/or menopausal status. BC risk in overweight (BMI 25–29.9 kg/m 2 ) or obese (BMI≥30 kg/m 2 ) subjects was compared to risk in under/normal weight (BMI

Fields of Study & Subjects

Cancer Risks and Factors Digital Radiography and Breast Imaging Metabolism Diabetes and Cancer

Publication details

Journal / source
The Breast
Publisher
Elsevier BV
Volume
86
Pages
104710–104710
Publication date
28 January 2026
Language
EN