system
Given the following post, respond as if you're commenting on Reddit:
human
Is there any science that explains why we are seeing so many strange allergies pop up?  And why does the body respond to harmless foreign bodies (such as peanut oil) by essentially 'killing itself'.
gpt
There are still many unknowns surrounding this question, but research in the last couple decades is starting to point to the culprit as being a lack of gastrointestinal flora and fauna. In the last couple centuries we have slowly sanitized our societies and, as a result, purged ourselves of some natural GI symbiotes and parasites. Hookworms are often pointed to as the primary parasite which Western cultures lack and coincidentally, Western cultures also have high rates of allergies and autoimmune diseases (whereas non-Western cultures have none). Studies in recent years have shown that introducing hookworms to the body can combat, or even cure, things like IBS, Crohn's disease, allergies, MS, and more - all diseases that are non-existent in less "clean" (ie non-Western) societies. It's currently believed this is accomplished by the hookworms (or other flora/fauna) activating a very low-level immune response in the GI tissues - essentially focusing the 'attention' of the immune system on a real thing, rather than on the body itself. It's almost like the parasites are distracting your immune system, and without them your immune system is bored and needs to attack something, so it attacks your own body.