Why breastfeeding's benefits may last years: Immune cells link lactation to long-lasting health
Medical Xpress
February 26, 2026
AI-Generated Deep Dive Summary
Breastfeeding has long been recognized as a powerful way to improve health outcomes for both mothers and babies, but the mechanisms behind these benefits have only recently come into focus. A new review in *Trends in Immunology* highlights how T cells—key players in the immune system—play a crucial role in shaping the baby’s immune development, fostering healthy gut bacteria, and even reducing the mother’s risk of breast cancer. These findings underscore the profound biological connection between breastfeeding and long-term health.
The study reveals that during breastfeeding, T cells transferred from the mother to the infant help establish a strong immune system early in life. This transfer not only protects babies from infections but also influences their gut microbiome, which is essential for overall health. A balanced gut environment can reduce the risk of chronic conditions like diabetes and allergies later on. For mothers, breastfeeding stimulates cellular changes that may lower breast cancer risk by reducing inflammation and oxidative stress.
Understanding these immune-based mechanisms offers valuable insights for new parents. Breastfeeding supports not only immediate health but also lays the foundation for long-term well-being. This research emphasizes the importance of promoting breastfeeding as a natural way to enhance both maternal and child health, potentially preventing chronic diseases down the line.
For readers interested in health, this information highlights the science behind why breastfeeding matters—and how it can have lasting benefits for generations. By prioritizing breastfeeding, families can take an active role in fostering healthier outcomes for their children while also supporting the mother’s well-being.
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Originally published on Medical Xpress on 2/26/2026