Half of all food allergy sufferers are not actually allergic

NewsGuard 100/100 Score

A new study has shown that the food allergies that people claim to have may not be true. The study reveals that as many as 20 percent of Americans over the age of 18 years believe that they are allergic to one or more food items. The study finds that the actual number of people who have a food allergy is close to 10 percent of the population. They also show that one in 20 Americans had a diagnosed case of a food allergy.

Image Credit: Kaspars Grinvalds
Image Credit: Kaspars Grinvalds

The results of this study from the Northwestern University’s Feinberg School of Medicine and the Ann & Robert H. Lurie Children’s Hospital of Chicago, were published in the latest issue of the journal JAMA Network Open.

The team of researchers looked at a population of over 40,000 American adults over the phone and via internet between October 2015 and September 2016. All the participants were asked to report if they had any food allergies and were asked if the diagnosis of the said food allergy was ever confirmed by a doctor.

They found that only around 10.8 percent actually had a food allergy. However, 19 percent of the study population reported as having a food allergy. The 10.8 percent of the population with the allergies confirmed about the symptoms of a food allergy that include hives, swelling of the lips, constriction of throat and difficulty breathing, chest pain etc. The others who did not actually have food allergies reported non-specific symptoms such as stomach pain, runny nose, nausea etc. Commonest foods that people were allergic to included shellfish to which 7.2 million adults were allergic to. Other foods that caused allergic reactions in adults include peanuts, milk, tree nuts, eggs, wheat, fish, soy and sesame seeds.

The survey found that almost half of all the proven cases of allergies were developed after the person reached adulthood and 38 percent had a serious case of food allergy which required emergency medical attention. The team emphasizes that there are many people who believe they have an allergy to certain foods and are self diagnosing themselves. The team believes that all diagnoses should be confirmed by a doctor and people with confirmed allergies need access to the emergency drug epinephrine that could save lives. People with self diagnosed false allergies could be depriving themselves of a healthy and balanced diet, the authors of the study believe.

The study estimates that across the nation there are around 26 million individuals living with a food allergy. Almost the same number of people also believes they have food allergies. Experts have said that people who are allergic usually have antibodies called the IgE or immunoglobulin E levels raised in their blood. However being intolerant to a food item could be non-mediated by this allergic process. The team explains that people with a milk allergy may actually have lactose intolerance. This means that their bodies are incapable of breaking down the lactose sugar in milk. The experts say that actual food allergies are difficult to pinpoint but are in existence. They should be diagnosed early and precautions need to be taken to prevent emergencies. The team emphasises that the lack of accurate diagnosis of food allergies is a concern.

Ruchi Gupta, a public health researcher and professor of pediatrics at the Northwestern University Feinberg School of Medicine in Chicago, lead author of the study said in a statement, “We were surprised to find that adult-onset food allergies were so common. More research is needed to understand why this is occurring and how we might prevent it.” “Self-diagnosis of a food allergy is not a good idea and it is imperative to visit a specialist if there are concerns about allergic reactions,” she added. “A false diagnosis can result in excluding foods from the diet unnecessarily, whereas on the other hand, ignoring symptoms of a food allergy can put patients at risk of severe reactions on exposure to trigger foods.” “If food allergy is confirmed, understanding the management is also critical, including recognizing symptoms of anaphylaxis and how and when to use epinephrine,” she said.

Source: https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2720064

Dr. Ananya Mandal

Written by

Dr. Ananya Mandal

Dr. Ananya Mandal is a doctor by profession, lecturer by vocation and a medical writer by passion. She specialized in Clinical Pharmacology after her bachelor's (MBBS). For her, health communication is not just writing complicated reviews for professionals but making medical knowledge understandable and available to the general public as well.


Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Mandal, Ananya. (2019, January 07). Half of all food allergy sufferers are not actually allergic. News-Medical. Retrieved on April 14, 2024 from https://www.news-medical.net/news/20190107/Half-of-all-food-allergy-sufferers-are-not-actually-allergic.aspx.

  • MLA

    Mandal, Ananya. "Half of all food allergy sufferers are not actually allergic". News-Medical. 14 April 2024. <https://www.news-medical.net/news/20190107/Half-of-all-food-allergy-sufferers-are-not-actually-allergic.aspx>.

  • Chicago

    Mandal, Ananya. "Half of all food allergy sufferers are not actually allergic". News-Medical. https://www.news-medical.net/news/20190107/Half-of-all-food-allergy-sufferers-are-not-actually-allergic.aspx. (accessed April 14, 2024).

  • Harvard

    Mandal, Ananya. 2019. Half of all food allergy sufferers are not actually allergic. News-Medical, viewed 14 April 2024, https://www.news-medical.net/news/20190107/Half-of-all-food-allergy-sufferers-are-not-actually-allergic.aspx.


The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
Post a new comment

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

You might also like...
Ultra-processed foods raise chronic kidney disease risk, study shows