ArticleBMJ open2026
Influence of lifestyle factors on breast cancer incidence from mid-life to older age: an Australian longitudinal cohort study.
Article in BMJ open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Association between risk-related lifestyle factors, screening adherence and breast cancer incidence: a decomposition analysis.Scientific reports · 2026Article
- Impact of body mass index on dietary habits and health behaviors in breast cancer patients.Frontiers in oncology · 2026Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThere is limited evidence on the association between lifestyle factors and breast cancer (BC) incidence from Australian longitudinal studies. This study aims to investigate the influence of lifestyle factors on BC incidence over time among Australian women from mid-life to older age.
designLongitudinal study.
settingData from the Australian Longitudinal Study on Women's Health (ALSWH) and linked Australian Cancer Database (ACD).
participants12 782 women from the ALSWH 1946-1951 birth cohort linked with the ACD from 1996 to 2019. MAIN OUTCOME AND MEASURES: Time to the occurrence of BC, accounting for death as a competing event. Body mass index, alcohol consumption, smoking, marital status, oral contraception and hormone replacement therapy were considered as lifestyle factors due to their impact from mid-life to older age.
resultsAmong 12 782 women in the cohort, a total of 941 incident BC cases (7.4%) were identified between 1996 and 2019. Time-dependent analysis disclosed that a higher hazard of BC in alcohol drinkers (rarely drinks/low-risk drinkers: Subdistribution HR [sHR]=1.49, 95% CI: 1.33-1.69; risky/high-risk drinkers: sHR=1.36, 95% CI: 1.14-1.62) relative to non-drinkers and those with overweight/obesity (sHR=1.23, 95% CI: 1.14-1.32) relative to underweight/acceptable weight. Results also revealed that non-partnered women (sHR=1.32, 95% CI: 1.12-1.57) had a higher hazard of BC than those with partners. Models were adjusted for lifestyle, reproductive and demographic factors. The probability of cumulative incidence of BC for alcohol drinkers and overweight/obese women steadily increased over time.
conclusionThis study demonstrated that being non-partnered, overweight/obese and consuming alcohol were associated with increased hazards of BC in women's mid-life to older age.
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