Reproduction is not nor has it ever been proven as a core mission of life and shouldn’t exist in that list. It has nothing to do with your core basis of life. It’s only to continue a life line or a cell decision reliant on environment. But it is not a core requirement in life.
It may be continuing a line but it is not proven as a core ‘mission’ of anything. It’s a bias decision and much of that relies on environment in which the cell lives in. It’s as much a ‘core mission’ as the effort of immortality should an environmental condition not be met. Some species continue their strain of life by cloning and some if even just one has achieved immortality and has no necessary core mission to reproduce.
Where’s your science in this?
No allergist or dermatologist I ever met would ever make that claim.
The results are from patient to patient. There’s a whole subset of sensitivities to chemical makeup of the food and another set of sensitivities to the environment the food was grown in. Food and products have dramatically changed and this also creates a lot of reactions. Mass production of food introduced a lot of irritants which we notice now. Then you have a subset of sensitivities that are entirely based on changes in the body with hormone. And then there’s family history.
There isn’t a standard answer with allergies.