It is a fair question. Food allergy has never felt more visible — on menus, in schools, in the news. But is that because more people actually have it? Or because we have all just got better at noticing something that was always there?
If you live with a food allergy, this is not an abstract debate. If the numbers are genuinely rising, there is a biological reason behind it that affects how you think about your own condition and its future. If the rise is mostly about better awareness, that changes the picture too. Here is what the evidence actually shows.
Why measuring food allergy is harder than it sounds
Before looking at the numbers, it helps to understand how food allergy is measured — because the method makes an enormous difference to the result.
The most reliable way to confirm a food allergy is an oral food challenge: a specialist gives you increasing amounts of a suspected allergen in a controlled setting and watches for a reaction. This is the gold standard. It is also expensive, time-consuming, and carries a small risk of anaphylaxis — so it cannot be used to survey large numbers of people [1].
Instead, most large studies use self-report: people answering a question like "do you have a food allergy?" The problem is that self-reported data consistently overestimates true food allergy, by roughly three to four times [1].
The reasons are easy to understand. People confuse food allergy with food intolerance. They remember a bad reaction years ago, cut out the food, and now call it an allergy without ever having had it confirmed. They were told by a doctor to avoid a food "just in case" without a formal diagnosis. A large US study found that while 19% of adults believed they had a food allergy, only about 11% had a convincing clinical history of true IgE-mediated allergy [2].
The awareness argument has real force here. As food allergy has become more widely discussed, more people identify with the label. School policies, allergen labelling on packaging, media coverage of fatal anaphylaxis cases — all of these increase the number of people who call themselves food allergic, whether or not the underlying biology has changed.
So far, you might conclude the apparent rise is mostly about awareness. But that is only half the picture.
What the harder data shows
Because self-reported surveys are unreliable, researchers have looked for harder evidence — data that cannot be inflated by awareness alone. The most useful source is hospital admissions for food-induced anaphylaxis. These are events severe enough to need emergency care, recorded systematically in national health databases, and not affected by how many people decide to call themselves food allergic on a survey.
The trends in this data are consistent and hard to dismiss.
In England, hospital admissions for food-induced anaphylaxis more than tripled between 1998 and 2018, rising from 1.23 to 4.04 admissions per 100,000 people per year. The biggest increases were in children under fifteen [3]. In Australia, admissions for food-related anaphylaxis rose by around 50% between 2005 and 2012. A more recent study in Western Australia found annual increases of 5.3% in anaphylaxis rates between 2010 and 2019, with the steepest rises in adolescents and young adults [4,5].
One detail in this data matters a lot. While admissions for anaphylaxis have risen sharply, death rates have stayed roughly stable — around 0.5% to 1% of cases across multiple countries [3]. If the rise were entirely down to awareness and people coming to hospital who would not have done so before, you would expect deaths to fall as better care was applied to the same number of cases. The pattern we actually see — admissions rising steeply while deaths hold steady — fits better with a genuine increase in severe cases being managed well, rather than just a statistical effect of awareness [3].
What the science honestly cannot say
The honest position — which the scientific literature itself is clear about — is that we do not have the kind of large-scale, clinically confirmed data that would allow us to say exactly how much food allergy has increased. Oral food challenges cannot be done at scale. Hospital admissions for anaphylaxis are a strong signal, but anaphylaxis is only the most severe end of the spectrum. Changes in when people go to hospital, wider access to adrenaline auto-injectors, and better public awareness of when to seek help could all partly explain the rise in recorded admissions [6].
What the evidence does support, across multiple countries and multiple types of data, is that food allergy is more common than it was a few decades ago. How much more is still uncertain. The fact that it has increased is not [1].
Where the numbers actually settle
The best current estimates from clinical research suggest that IgE-mediated food allergy affects around 4% to 8% of children in Western countries, with rates in adults lower and more variable [1]. The UK Food Standards Agency’s (FSA) 2024 Patterns and Prevalence of Adult Food Allergy ( PAFA study estimated that around 6% of UK adults have a clinically confirmed food allergy [7].
These are not small numbers. If you are living with a food allergy, you are not unusual and you are not part of a passing trend. Your condition is shared by millions of others, and the numbers are not shrinking.
What this means for you
For you, the most useful takeaway is this. Whether the true rate of food allergy in the population is 5% or 8%, the condition you are managing is real, it is common, and it is not going away. The biological reasons behind the increase — which we cover in Part 2 — help explain why your generation has more food allergy than previous ones, and why the next generation may see different patterns as prevention science improves.
But that does not change what you need right now: clear, specific, written allergen information when you eat out, available before you order. That need is not a product of awareness or media attention. It is a product of biology.
Coming in Part 2: why food allergy rates are rising where they are — what changed in the modern environment, and what the science of early immune education tells you about the condition you are managing.
References
Sicherer SH, Sampson HA. Food allergy: a review and update on epidemiology, pathogenesis, diagnosis, prevention, and management. J Allergy Clin Immunol. 2018;141(1):41–58. DOI: 10.1016/j.jaci.2017.11.003
Warren CM, Jiang J, Gupta RS. Epidemiology and burden of food allergy. Curr Allergy Asthma Rep. 2020;20(2):6. DOI: 10.1007/s11882-020-0898-7
Turner PJ, Campbell DE, Motosuse MS, Campbell RL. Global trends in anaphylaxis epidemiology and clinical implications. J Allergy Clin Immunol Pract. 2020;8(4):1169–1176. DOI: 10.1016/j.jaip.2019.11.027
Mullins RJ, Wainstein BK, Barnes EH, Lester W, Gold MS. Increases in anaphylaxis fatalities in Australia from 1997 to 2013. Clin Exp Allergy. 2016;46(8):1099–1110. DOI: 10.1111/cea.12748
Stiles SL, Sanfilippo FM, Loh R, Said M, Clifford RM, Salter SM. Contemporary trends in anaphylaxis burden and healthcare utilisation in Western Australia: a linked data study. World Allergy Organ J. 2023;16(9):100818. DOI: 10.1016/j.waojou.2023.100818
Turner PJ, Baseggio Conrado A, Kallis C, O'Rourke E, Haider S, Ullah A, Custovic D, Custovic A, Quint JK. Time trends in the epidemiology of food allergy in England: an observational analysis of Clinical Practice Research Datalink data. Lancet Public Health. 2024;9(9):e664–e673. DOI: 10.1016/S2468-2667(24)00163-4
University of Manchester, Manchester University NHS Foundation Trust, University of Southampton, Amsterdam University Medical Centre, Isle of Wight NHS Trust. Patterns and Prevalence of Adult Food Allergy (PAFA). London: UK Food Standards Agency; 2024. DOI: 10.46756/sci.fsa.ehu454
