Booths has apologised and warned customers with a peanut allergy not to consume the product.

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Though it is not technically a food allergy, rather an autoimmune disease, celiac disease still falls under the general umbrella of allergies and sensitivities, which is what some believe should be included in the ADA. Other types of allergies, like peanut allergy, can be extremely severe in an immediate way, and quickly lead to anaphylaxis, and death.

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One observational study compared Jewish children in the United Kingdom with those in Israel, where the peanut-allergy rate is low.

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About two-thirds of the children are now 5 and receiving peanut-allergy testing.

WSJ: Food Allergy Advice for Parents: Start Peanuts, Eggs and More Sooner

According to Allergy UK, peanut and tree nut allergy is the most common food allergy in adults and children.

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The 2008 study of more than 5, 000 children in each country in the Journal of Allergy Clinical Immunology found the rate of peanut allergies among the U.K. children was 10 times that of those in Israel.

WSJ: Food Allergy Advice for Parents: Start Peanuts, Eggs and More Sooner

Dixon-Woods agrees that better food labeling, more education, and stricter regulation is necessary to reduce misunderstanding and negative attitudes about nut allergies especially in the United States, where peanut-based products are ubiquitous and the word allergy is frequently used to describe non-life-threatening conditions such as hay fever.

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