I see it as more of a side effect of an immune system that is designed to adjust itself for whatever pathogens are present in its environment.
Depending on where you are born, you can be exposed to a completely different set of microorganisms or compounds present in the environment. Your body first needs to know which of those are benign and not. A simple heuristic is to tolerate most of these that you have been exposed to till a certain age.
But hey this is just my armchair biology. Don't know if there is anything supporting it
Depending on where you are born, you can be exposed to a completely different set of microorganisms or compounds present in the environment. Your body first needs to know which of those are benign and not. A simple heuristic is to tolerate most of these that you have been exposed to till a certain age.
But hey this is just my armchair biology. Don't know if there is anything supporting it