This is a negative reaction to food that doesn’t involve the immune system

An adverse reaction to a food or food ingredient in which the immune system perceives a particular substance as foreign and acts to destroy it. An adverse reaction to a food or food ingredient that doesn't involve the immune system; these are often caused by a problem with metabolism

Food intolerance is you answer.

Happy to help. :)

answer; planning ahead;

this is really easy just look up what these words mean