Food Allergy

Dr Du Toit has a research interest specifically in the field of Food Allergy and is able to offer the latest diagnostic tests for the investigation thereof.
 
Background Information re Food Allergy:
 
IgE-mediated food allergies, also known as immediate-onset food allergies, are most prevalent during childhood, affecting between 6 and 8% of children in the UK. Cow’s milk, hen's egg, peanut, tree nut, sesame, wheat, soya, and kiwi are responsible for the majority of food-induced allergic reactions in young children. As not all food allergies are outgrown, finned fish, shellfish, tree nut and peanut allergies are the more common allergies in adulthood. 
 
Cross-reactive allergic reactions in pollen-allergic children and adults are common and known as the Oral Allergy Syndrome (OAS). An example of this syndrome is the teenager allergic to birch pollen and who experiences oropharyngeal tingling when eating an apple.
 
Increasing prevalence of Food Allergy 
 
It is widely believed that the prevalence of food allergy is on the increase. This is best demonstrated by studies of peanut allergy, which suggest an increased prevalence among high-risk infants, as well as children in the general population with a hereditary predisposition to allergy in some form. Peanut and tree nut allergies are troublesome food allergies as they are infrequently outgrown and are associated with significant morbidity and mortality. In addition, studies of adults and children with peanut allergy suggest a high co-prevalence of tree nut and sesame allergies. Early reports also suggest an increase in the prevalence of 'novel allergies' to foods, such as kiwi and sesame.

Diagnosis of Food Allergy

A diagnosis of food allergy is important as it facilitates the avoidance of the relevant food allergen/s and the implementation of an appropriate management plan. Conversely, a diagnosis ruling out food allergy allows for safe dietary expansion. Such a diagnosis may also lead to more appropriate diagnostic

investigations. For example, a child who displays non-specific gluten-associated gastrointestinal symptoms that are not suggestive of an IgE-mediated food allergy, warrants investigations for Celiac disease.

Common symptoms of food-induced allergies include rashes (hives, eczema, erythematous rashes), swelling (also called angioedema), gut pain and vomiting, itchy red eyes and runny nose, wheezing, and very occasionally anaphylaxis. To view a list of the food allergies we commonly test for, click here. 


Food Allergen Labelling in the EU and UK


Please click on the following links below for more on specific food allergies:

Cows Milk Allergy

Hens Egg Allergy

Nuts (Peanut and Tree Nuts) allergy

Seeds (sesame, poppy, linseed, flax-seed, poppy, mustard)allergy

Seafood (fin-fish, shellfish, Mollusk) allergy

Cereal Grain (Wheat, Rye, Barley, Oat, Quinoa, Buckwheat) allergy

Celery (Celeriac) allergy

Fruit allergy, including Oral Allergy Syndrome and kiwi allergy

Legumes allergy

Lupine allergy

Soya Allergy


If you would like to read more by Dr Du Toit on Food Allergy please click here!  

 
 

Food Allergy Alerts from alert4allergy.org