The prescription drugs for some types of allergies and asthma are a form of steroids.
Of note some of modern human allergies come from infant avoidance. Kids who eat peanuts younger are less likely to get peanut allergies for example. If you want to decrease allergies, let your infants get dirty, play with dogs, and liberalize their diet.
I'm Gen X (1979), grew up playing in dirt, house filled with dogs and cats. Ate a fair amount of things, apart from the things I was allergic too: apples mostly. Most of the food I ate was home cooked. My sisters do not have allergies.
It has since gone on to get much, much worse. I can no longer eat carrots or parsnips (which were my favourite). I'm now very allergic to dogs and cats and it wasn't because of a lack of exposure.
40 allergies.
Fuck me...