I have seen a study that said that brestfeeding protected against osteoporosis and the longer one fed the greater the protective effect. I can't remember the reference though sorry! Judy. +----------------------------------------------------------------+ | John Grundy email: [log in to unmask] | | Department of Computer Science phone: +64-7-838-4452 | | University of Waikato fax: +64-7-838-4155 | | Private Bag 3105 Hamilton | | New Zealand | | WWW: http://www.cs.waikato.ac.nz/~jgrundy/ | +----------------------------------------------------------------+