After finding out I have a walnut allergy I tend to avoid all tree nuts and peanuts. While I’ve never had a reaction to peanuts or peanut butter it was advised I hold caution with eating tree nuts and peanuts in general. Due to cross-contact and cross-contamination between the two in food-processing facilities. Despite that I have had relatives who have tried to feed me walnuts still -.- What part of allergic do we not understand.