Some pediatricians started a study with kids that are allergic to peanuts. They had Mom give them just a tiny bit of PB on the tip of a spoon each day. Eventually they adjusted to them and lost their allergy. I wonder if it would work with adults?
As a kid I was allergic to eggs. But I insisted on eating them. Now I can eat them by the dozen. I started with small amounts of scrambled eggs. I also have a tendency to be allergic to shellfish. But I still eat them. Small amounts only. And I seem to do better when they are deep fried. Go figure. And it is months in between having them. One of these days it will all backfire on me.
Last year for my birthday, my daughter bought me a really large helping of fried clams. I pigged out. Bad move! Got so sick and my arms and legs started to swell. I got a little scared on that one.
When I was dating my second husband, we would go to my favorite restaurant. I would always order the Fisherman's Platter. It was loaded with shellfish. But before we sat down I would call the ER and let them know I was coming in. After we finished eating it was a rush to get to the ER to get my stomach pumped out. After about doing that three times, he refused to let me order shelfish ever again. And we changed restaurants.