well the new research says it doesn't matter what you eat when pregnant, that it can't cause the allergies but who knows. My son is allergic to a number of things and carries an epi pen for egg, much like my husband does for peanuts (son also allergic to peanuts and tree nuts but not epi pen worthy). I think your dr is insane to suggest at 1 yr to try peanut butter, all the research says to wait till at least 3... when they can tell you what's going on if they have a reaction. unfor the serious peanut allergies are rarely out grown (like 20% or something)... but living w/a serious peanut allergy isn't as bad as you would think, its pretty common. We use soy nut butter and he likes it : ). The one thing is to make sure things he eats aren't on the same line as peanuts in the factory, but there are no laws that state they HAVE to release that information but most manuf do. My husband does eat things that are produced in the same factory as... but personally i wouldn't take the risk w/my son and my husband has also ended up in the ER about 4 times (for accidentally directly injesting candy w/peanut butter). Its not your fault. My son is allergic to milk, soy, egg white, egg yoke, tree nuts, peanuts, potatoe.... and i'd say if it was because of what i ate, i didn't eat alot of any of it so how are you supposed to know? Also, i started teaching my son about his allergies right when he started to talk. Now he says "no, i can't eat that. allergy. vomit. belly ache". good luck, any questions ask, its just a matter of being allert and consistent : ). Oh. and i nursed for a yr and just gave up all the things he was allergic to. AND my son had reactions at 2-3 weeks so i doubt my breast milk did it!!