Breastfeeding benefits your baby - and protects your health. Breastfeeding can reduce the risk of developing breast and ovarian cancers, as well as endometrial cancer. In addition, extended breastfeeding can provides protection against breast cancer subtypes, including aggressive forms like triple-negative breast cancer. By reducing lifetime exposure to estrogen and promoting healthy breast tissue renewal, extended breastfeeding serves as a powerful protective measure against hormone-receptor-positive breast cancers. 1. Triple-Negative Breast Cancer Protection: Breastfeeding significantly lowers the risk of developing triple-negative breast cancer, a subtype that lacks estrogen, progesterone, and HER2 receptors and is more aggressive and harder to treat. Women who breastfeed for at least 12 months experience the most notable risk reduction.
2. Prolonged Exposure Benefits: Breastfeeding for an extended period, especially across multiple children, provides cumulative protection against hormone-receptor-positive breast cancers. This occurs because lactation reduces lifetime estrogen exposure, a key driver of these cancers.
3. Premenopausal Breast Cancer Prevention: Breastfeeding is particularly protective for premenopausal breast cancer, potentially reducing the risk by up to 20%. This is especially beneficial for individuals with a family history of breast cancer or genetic predispositions like BRCA mutations.
4. Improved Breast Tissue Renewal: Lactation stimulates breast tissue turnover, helping remove cells with potential DNA damage or mutations that could lead to cancer. This process is protective against a range of breast cancer subtypes.
5. Impact on Inflammation and Immune Response: Breastfeeding reduces chronic inflammation in breast tissue and enhances immune surveillance, which can help prevent the development of aggressive breast cancer types by identifying and eliminating abnormal cells.
In regions where breastfeeding for extended periods is culturally or economically common, studies observe lower rates of hormone-receptor-positive breast cancers. This highlights the role of prolonged breastfeeding as a modifiable lifestyle factor in cancer prevention. • • •
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