Breastfeeding lowers the risk of breast cancer, especially in premenopausal women [12,83-85].
A pooled analysis of data from 47 studies found that compared to mothers who never breastfed, :
Although data are limited, breastfeeding for less than 1 year may also modestly lower breast cancer risk .
Breastfeeding may be especially good at lowering the risk of estrogen receptor-negative (including triple negative) breast cancers [52,86-88].
For a summary of research studies on breastfeeding and breast cancer, visit the Breast Cancer Research Studies section.
Learn about other healthy lifestyle behaviors that may lower breast cancer risk.
Breastfeeding has other benefits for mothers, including lowering the risk of [89-90]:
Susan G. Komen’s breast self-awareness messages
1. Know your risk
2. Get screened
3. Know what is normal for you and see a health care provider if you notice any of these breast changes (see images):
4. Make healthy lifestyle choices