A groundbreaking study has revealed how breastfeeding provides a powerful, lifelong defence against breast cancer.
Researchers in Australia have discovered that breastfeeding creates specialised “guardian” cells in the immune system that remain in the breast tissue for decades, ready to fight off cancer.
Here’s the simple breakdown:
What They Found: The study, published in the journal Nature, identified specific immune cells (called CD8$^+$ T cells) that are more numerous in women who have breastfed.
How They Work: “These cells act like local guards, ready to attack abnormal cells that might turn into cancer,” explained lead author Prof. Sherene Loi.
Lasting Protection: This isn’t a temporary boost. These “guards” live in the breast tissue for decades, providing long-term protection, especially against aggressive triple-negative breast cancer.
What This Means: This discovery is a major breakthrough. It shows that the protection comes from a fundamental, lasting change to the immune system, not just temporary hormones.
This new understanding could pave the way for entirely new methods of preventing and treating breast cancer.
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