The March 1999 SELF magazine issue (3 pp.) describes (in mom's own words) how her daugter was diagnosed at age 5 weeks with "human-milk induced colitis" - you can probably guess the rest of story, but the amazing thing is that she managed to squeeze this horror story into an article which at first glance attempts to extol the benefits of breastfeeding. I'm sorry I don't have the address to write to the magazine, but it's QUITE AN ARTICLE.