Can breast cancer survivors breastfeed? Expert shares key medical facts

Women who survive breast cancer often face deep uncertainty about pregnancy, body changes, and whether they can safely breastfeed their babies after treatments like surgery, chemotherapy, or radiation.

Milk Production and Surgery

Dr Bhavna Sharma, a longevity and IVF specialist and founder of The Longevity Centre, explains that breastfeeding can be possible for some survivors, while others may struggle with milk supply or find they cannot feed from a treated breast. The exact outcome depends on factors like the type of surgery, past radiation therapy, and ongoing cancer medications. For instance, a lumpectomy removes a tumor while keeping most of the breast, meaning breastfeeding may still be possible, though the treated side might produce less milk. Radiation can likewise reduce milk output or make the process difficult and uncomfortable, while the untreated breast often continues to produce milk normally.

Safety and Fear of Recurrence

A major fear for many mothers is whether breastfeeding or pregnancy will cause the cancer to return. According to Dr Sharma, available evidence and the American Cancer Society state that breastfeeding after successful treatment does not increase the risk of cancer recurrence. However, normal postpartum changes like fullness and tenderness can cause anxiety, making regular follow-up visits with a cancer care team important. Another concern involves medications passing into breast milk. If a mother has finished treatment and takes no unsafe drugs, doctors can assess her safely. Consulting a lactation specialist or oncologist early helps mothers understand what to expect and manage any necessary medication adjustments.

Context

Medical guidance on postpartum health after cancer treatment emphasizes open communication between patients and their specialized care teams. Lactation specialists and oncologists work together to evaluate individual treatment histories and ensure both maternal recovery and infant safety.