27% of breast cancer cases each year in the UK are linked to major lifestyle and other risk factors.
Breast cancer risk is associated with a number of risk factors.
|Increases risk ('sufficient' or 'convincing' evidence)||May increase risk ('limited' or 'probable' evidence)||Decreases risk ('sufficient' or 'convincing' evidence)||May decrease risk ('limited' or 'probable' evidence)|
International Agency for Research on Cancer (IARC) and The World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) classifications. Find out more about IARC and WCRF/AICR classifications.
a Post-menopausal breast cancer only. b Pre-menopausal breast cancer only.
Use our interactive tool to explore risk factors for breast cancer.
- Parkin DM, Boyd L, Walker LC. The fraction of cancer attributable to lifestyle and environmental factors in the UK in 2010. Br J Cancer 2011;105(S2):S77-S81.