Tag: immunology

A food allergy is a medical condition where there’s an abnormal immune reaction to some food.

Now, a variety of food proteins can cause food allergies, but the most common are known as the big eight, these include proteins within milk, eggs, peanuts, tree nuts, seafood, shellfish, soy, and wheat.

Food is essential to life, and normally food doesn’t cause an allergic reaction – in fact, the process that allows for that is called oral tolerance.

Let’s see how that works. Normally, when food travels through the stomach and intestines, the proteins within them are broken down by gastric acid and proteases into tiny fragments, called oligopeptides – small strings of amino acids.

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