Breastfeeding Causes a Surge in Immune Cells that Could Prevent Cancer

A new study offers insight into how breastfeeding may help protect against breast cancer by activating specialized immune cells that remain in breast tissue for decades. Researchers found that women who had breastfed had higher levels of CD8+ T cells—immune “guards” that may attack abnormal or cancerous cells—potentially reducing the risk of aggressive breast cancers. These findings deepen understanding of the biological mechanisms behind breastfeeding’s long-observed protective effects and may inform future prevention and treatment strategies.

While the decision to breastfeed is personal and not always possible, this research underscores the importance of continued investigation into maternal health and cancer prevention. Read more from New Scientist here.