Key Findings
- Adult weight gain and excess body fat increase risk for post-menopausal breast cancer.
- Alcoholic drinks increase the risk of post- and pre-menopausal breast cancers.
- Regular vigorous physical activity reduces the risk of both post- and pre-menopausal breast cancers.
- Moderate physical activity reduces the risk of post-menopausal breast cancer.
- Breastfeeding reduces the risk of both post- and pre-menopausal breast cancers.
- For pre-menopausal breast cancers, body fatness was found to decrease risk.
