It's the most common allergen. Even in smallest amounts it's inflammatory even in those without obvious IgE allergy (tests for allergies are notoriously imprecise, even things like RAST and in-vitro lymphocyte stimulation).
There's emerging evidence that consumption of Neu5Gc, a sialic acid that coats non-human mammalian proteins, is a cause of chronic inflammation in humans:
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It's the most common allergen. Even in smallest amounts it's inflammatory even in those without obvious IgE allergy (tests for allergies are notoriously imprecise, even things like RAST and in-vitro lymphocyte stimulation).