It’s likely that your personal experience doesn’t reflect actual rates of food allergies. Food allergies are most common in young children, and even many parents don’t spend a lot of time around a large number of young children, so it makes sense that your cohort of adult acquaintances doesn’t have to deal with them (or doesn’t discuss them often).
Data on rates of food allergies by country are spotty, but [this study](https://waojournal.biomedcentral.com/articles/10.1186/1939-4551-6-21) scrapes some together. Exact rates depend a lot on what age you’re looking at and how you’re measuring allergies, but the US fits comfortably between the eastern-European countries represented.
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