Yes, I know of one Mom who experienced this with her son. Didn't click at the time that his permanent "nursing strike" was due to her daily consumption of peanut butter until he was a year old and he was given a peanut butter cookie. Shortly after, he had to be rushed to ER. Peanut butter seems to be a common offender but there are many foods that some kids just cannot tolerate at all. It seems to be highly individual and some are much more sensative than others. I have even heard of certain food additives such as MSG consumption by Mom or child wrecking havoc on their poor little systems. Jamie Gilcrest; Morgan's Mom, LLLL [log in to unmask]