Peanut allergy: potentially lethal, definitely requires hospitalization
Gluten allergy/intolerance: long term intestinal damage and potential other issues like nerve damage
Lactose intolerance (and other intolerances): uncomfortable and not best to continually trigger, but not especially harmful.
Basically:
“It’ll kill/hospitalize me”
“It’ll semi-permanently damage me”
“stomach’s gonna hate me but WORTH IT”
