Allergies are a serious concern and unfortunately, allergens come in all forms. Peanuts, prawns, pollen, penicillin. Even sweat and semen. Conventionally, we are told to avoid allergens, but a new study from the UK suggests we should instead tolerate allergens instead of avoiding them. Scientists found that eating peanuts early in life can prevent the development of peanut allergies later. We speak to an allergist to understand the implication of this defining study and allergies in general.