Findings from POSITIVE, the largest known study evaluating "breastfeeding frequency, patterns, and relation to breast cancer outcomes in women previously diagnosed with early, hormone receptor-positive breast cancer" were recently unveiled in the Journal of Clinical Oncology. According to data reported in the POSITIVE study, breastfeeding was not shown to be associated with a higher short-term rate of breast cancer related events, news particularly relevant to women planning pregnancy and breastfeeding after receiving a breast cancer diagnosis.
To learn more about the POSITIVE study, click here.
Source mentioned:
Peccatori FA, Niman SM, Partridge AH, et al. for the International Breast Cancer Study Group and the POSITIVE Trial Collaborators. Breastfeeding After Hormone Receptor–Positive Breast Cancer: Results From the POSITIVE Trial . JCO; Published online 9 July 2025. DOI: https://doi.org/10.1200/JCO-24-02697