Cara: Perhaps someone with more expertise in this area will answer, but to get you started, here are some resources: Chester Berlin, MD, spoke on this topic at the ILCA conference in Scottsdale, AZ in July 1995. (He will be speaking on the same topic at the LLLI conference in Washington, DC this coming July). He said there is no reason to prohibit breastfeeding by children whose mothers have had implants, based on our current knowledge. He pointed out that children are given simethacone drops for colic, and bottlefed babies get silicone from bottle nipples. He had some articles on his bib that may be of help to you: Berlin, CM. Silicone breast implants and breastfeeding. Pediatrics 97:547-549, 1994. Dunn KW, Hall PN, Khoo CTK. Breast implant materials: sense and safety. British J Plastic Surg 45:315-321, 1992. The 1997 Breastfeeding Answer Book says (on p. 435): "If a mother is concerned about potential silicone leakage into her milk, explain that physical constraints make it unlikely this could happen. The very large size (molecular weight) of the silicone used in breast implants is considered too large to pass through the small water-filled pores in the lining of the mother's alveoli, or milk-producing cells. In addition, silicone does not dissolve in water, another characteristic that decreases the likelihood of it passing into the milk." Hope this helps. Anne Altshuler, RN, MS, IBCLC and LLL leader in Madison, WI