Eat Away the Allergy?

An interesting study (www.theguardian.com/society/2016/mar/04/early-introduction-peanuts-eggs-cuts-allergy-risk-eat-study) seems to show that exposing 3 month old babies to modest amounts of foods associated with food allergies (such as peanut butter and egg white) can reduce the incidence of actual allergies in later life. This is in comparison to babies exposed to these substances in later life, at 6 months. Perhaps infants 'identify' foods as being appropriate (or not) in a similar way to the development of the immune system (where the foetus makes an early distinction between proteins that are 'self' and 'non-self')? The allergy might be a response to a food protein that was not encountered early enough!