[petodo]

Yeah, it doesn't seem to be hereditary, both me (European Caucasian) and my wife (Chinese Asian) have 0 problems with nuts and can crunch them as much we want (same with everyone in direct line), but both of our kids have very strong nut allergy (not just peanuts, also pistachios, walnuts and especially cashew nuts) with immediate swelling, whole body red, very dangerous, even just piece of peanut. Also interestingly son spent 1st year of life in China, while daughter was born in Europe and it doesn't seem to make any difference.

Before I had kids I heard in Europe about peanut allergies only from US movies and TV shows and never met person who would be allergic to them, so was shocked to find my kids having such "made up" US allergy.