Why are some things more allergenic than others?


Why do some things (like peanuts) have so many people allergic to them while other things (like mint) aren’t causing issues to nearly as many?

Basically why are some things more allergenic than others

In: 168

Short answer: we don’t know. There may be evolutionary biology speculation or other, but ultimately we don’t have a 100% answer.

Anything we can do to help avoid our non existent future kids from having allergies?

I just remember growing up might have the odd peanut allergy but nowadays it’s like every second kid has an issue.

Some allergens have a higher propensity to activate the immune system (IgE, immune cells) because of the allergen‘s shape and composition. Our genetics play an important role in how we respond to these allergens… which is why some individuals may be more sensitive to particular allergens.

I turn that around sometimes. Into: Why are many people allergic to this thing, but few people allergic to that thing?

The net says peanut proteins bind to Immunoglobulin E (an antibody). That rather explains it, because pretty much any disease can cause you to have elevated IgE. Thus if you get exposed to peanuts and you have any condition raising your IgE count (Sorry, not a professional and probably not using all these terms correctly) you’re going to have a reaction.

There are people who are allergic to ultraviolet light. Is allergic the right word? Polymorphic Light Eruption. And another condition called Poryphyria.

Medical student here who has studied immunology.
It has to do with your genes.
Your immune system has a sensing system,one gene (HLA) codes for and thus programs your immune system to be able to detect any foreign particle entering your body. Certain variants of HLA (alleles) (copies which have the same function but with slight differences) have the setting where they detect peanuts to be microbial and thus raising the alarms on your body and prepping for a cellular war which you experience as wheezing,coughing,redness etc.