As a late millenial, my guess for the cause of high prevalence of peanut allergy among younger people was because of being less exposed to dirt and being subjected to over-cleanliness when we were growing up. Iirc, the news and medical community overemphasised cleanliness in the 1990s. So, parents overdid it and the children’s immune system has become less attuned and familiar to different foreign objects in the body. The immune system then overreacts to non-threatening objects in the body resulting in allergy.
As a late millenial, my guess for the cause of high prevalence of peanut allergy among younger people was because of being less exposed to dirt and being subjected to over-cleanliness when we were growing up. Iirc, the news and medical community overemphasised cleanliness in the 1990s. So, parents overdid it and the children’s immune system has become less attuned and familiar to different foreign objects in the body. The immune system then overreacts to non-threatening objects in the body resulting in allergy.