Some expert opinion recommends not breastfeeding during radiotherapy treatment of breast cancer because the suckling effect from the infant might augment skin toxicity from radiotherapy in the treated breast(s).[1] High-dose breast radiation for the therapy of breast cancer can substantially decrease or eliminate subsequent milk production in the treated breast, but not the untreated breast. Medical professionals sometimes advise mothers who have received breast cancer surgery and radiation not to breastfeed; however, it appears that these concerns are unfounded. Lower radiation doses to the breast in the treatment of Hodgkin lymphoma appear to have only a minor effect on subsequent lactation success, but cranial irradiation for Hodgkin's lymphoma can reduce subsequent breastmilk production. Women who were treated as children with cranial radiation for leukemia or chest irradiation for malignancy often have difficulty in nursing their infants. For information on diagnostic X-rays, see the LactMed entry for X-rays.