Food allergies are more common in children, especially in Western countries. Around 5 to 8% of children have at least one food allergy, compared to only 1-2% of adults. These allergies can really affect child's quality of life and create stress for the whole family. The most common foods that cause allergic reactions are cow's milk, egg, nuts, fish, and shellfish. Until now, the usual way to manage a food allergy has been to completely avoid the food. But this can be hard, limiting kids diets and puts them at risk of accidental exposure, and may even cause nutritional problems. Oral immunotherapy (OIT) has become and alternative treatment. It consists in giving very small amounts of the food allergen regularly to help the body get used to it. Some studies show this helps children build tolerance faster than just avoiding the food. But OIT also comes with risks, including allergic reactions during the treatment, some of which can be serious. Some research is focusing on a gentler and safer option: giving children baked milk or baked egg. When milk or egg is baked (for example, in muffins or cookies), the high heat changes the proteins, making them less likely to cause allergic reactions. The heat breaks the parts of the protein that the immune system usually reacts to, and mixing them with wheat flour makes them even less reactive. Interestingly, this doesn't work for every food, peanuts, for example, can actually become more allergenic when heated. But in the case of milk and egg, baking seems to be very helpful. Giving baked milk or egg to allergic children has shown some immune system changes similar to OIT, but in a safer and more natural way. This can make life a lot easier, not just for the kids, but also for their families since it broadens their diet, improves their nutrition, and reduces stress in social situations. Studies suggest that introducing baked milk and egg early on could also help kids become fully tolerant sooner. At Sant Joan de Déu Hospital in Barcelona, doctors have been using OIT for milk and egg allergies since 2006 in children over 5 years old. While the treatment has helped many, not all children become fully desensitized, and some still react to milk or egg occasionally. The success rate is around 70%, and it's often less effective in children with severe allergies, like those who have had anaphylaxis.
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1. To evaluate proportion of children who develop tolerance to raw milk or cooked/raw egg at 12 months.
Timeframe: 12 months from enrollment