Egg bread and egg allergy: what the baked egg trials show

In a randomized trial of 27 infants with cow's milk allergy or eczema who had never eaten egg, all of those given baked egg daily for 6 months then tolerated boiled egg, against 47.4% of those kept off egg, in a very small trial that randomized only infants who first tolerated baked egg, and whose baked egg was not necessarily bread. A second trial points the other way. In 43 toddlers allergic to raw egg who could already eat it baked, 10 g of baked egg two to three times a week for 6 months gave raw egg tolerance in 23.5%, against 33.3% on egg-free baked goods (adjusted odds ratio 0.50, 95% CI 0.11 to 2.40), a difference that did not reach significance in a trial its own authors call underpowered. Laboratory work offers a reason why egg inside a dough behaves differently. Heat weakened one egg protein, ovalbumin, while the tougher one, ovomucoid, stayed intact, and IgE binding to ovomucoid fell when the egg was heated together with wheat. As a food, 3.5 oz (100 g) of egg bread carries 30.1 micrograms of selenium, about 55% of the Daily Value, from a single USDA record with no spread between samples. We found no study of egg bread itself. For a child who already has egg allergy, baked egg is not safe by default: among 150 children assessed for egg allergy, 40% reacted to baked egg in a double blind challenge.

The numbers, per 3.5 oz (100 g)

As people eat it, per 3.5 oz (100 g)

How much is actually in it

• One hundred grams of egg bread carries 30.1 ug of selenium, 0.438 mg of thiamin and 0.436 mg of riboflavin, which is about 55%, 36% and 34% of the Daily Value. — One USDA SR Legacy record for egg bread (FDC 172673), with the toasted record as a second point (n = 2 records) Evidence E source
  Per 100 g: selenium 30.1 ug (toasted 32.9), thiamin 0.438 mg (toasted 0.385), riboflavin 0.436 mg (toasted 0.432)
• In the US a bread may only be labeled egg bread, or show an egg on the label, if it contains at least 2.56% whole egg solids by weight. — Bread, rolls and buns sold in the United States under the federal standard of identity Evidence E source
  Minimum 2.56% whole egg solids by weight, measured on a moisture-free basis

What a real portion looks like

• A medium slice of challah weighs 1.1 oz (31 g) in the US dietary survey, so it delivers about 9 ug of selenium, roughly a sixth of the Daily Value. — USDA FNDDS 2021-2023 food code 51119010, Bread, egg, Challah (FDC 2707624), standard household measures (n = 6 measures) Evidence E source
  Small or thin slice 24 g, medium slice 31 g, large or thick slice 43 g, slice with crust not eaten 14 g; selenium per medium slice 30.1 ug x 0.31 = 9.3 ug

What cooking and storage change

• In a randomized trial of 27 infants at risk of egg allergy, those who ate baked egg daily for 6 months all tolerated boiled egg afterward, against 47.4% of those who avoided egg. — Infants under 6 months with cow's milk allergy and/or atopic dermatitis, no prior egg, randomized to daily baked egg or egg avoidance for 6 months (n = 27) Evidence B source
  Boiled egg tolerance at 6 months: all in the daily baked egg arm against 47.4% in the avoidance arm, P = 0.012
• Laboratory data suggest that heating weakens ovalbumin but leaves ovomucoid intact, and that heating egg together with wheat lowers IgE binding to ovomucoid. — Egg proteins heated with and without wheat, tested by ELISA, SDS-PAGE and immunoblotting Evidence D source
  Ovalbumin band weaker with heating, ovomucoid band stable; IgE reactivity to ovomucoid decreased when heated in the presence of wheat

Safety, limits and interactions

• Among 150 children assessed for egg allergy, 40% reacted to baked egg in a double blind placebo controlled challenge, and 16 of 77 who tolerated baked egg still reacted to lightly cooked egg. — Children aged 6 months to 15 years assessed for possible egg allergy in the BAT2 study (n = 150) Evidence C source
  Baked egg: 60 reacted (40%), 85 tolerated (57%), 5 inconclusive; lightly cooked egg: 16 of 77 baked-egg-tolerant children reacted
• Pooled data from 29 mostly uncontrolled studies associate baked egg immunotherapy in egg-allergic children with tolerance in 49% and allergic reactions in 20%, at very low certainty. — Children with IgE-mediated egg or milk allergy on egg ladders or baked egg oral immunotherapy, 29 studies (n = 29 studies) Evidence C source
  Baked egg OIT: tolerance 49%, reactions of any severity 20%, at-home reactions 19%, discontinuation 17%; egg ladder: tolerance 69%, reactions 21%, epinephrine 3%
• In 51 young children with egg allergy given an open baked egg challenge, 56.9% tolerated it and epinephrine was needed in 2 of the 22 who reacted. — Children aged 12 months to under 6 years with confirmed IgE-mediated hen's egg allergy at a tertiary center in Barcelona (n = 51) Evidence C source
  56.9% tolerant; tolerance 35.7% with prior anaphylaxis against 64.9% without (p = 0.111); epinephrine in 2 of 22 non-tolerant

What people believe that the data does not support

• In a double blind randomized trial in 43 egg-allergic toddlers, eating baked egg 2 to 3 times a week for 6 months did not raise raw egg tolerance, 23.5% against 33.3% on egg-free baked goods. — Children aged 1 to 5 years with IgE-mediated raw egg allergy who tolerated baked egg, given 10 g baked egg (1.3 g protein) 2 to 3 times weekly or egg-free baked goods for 6 months (n = 43) Evidence B source
  Raw egg tolerance 23.5% (4/17) intervention against 33.3% (6/18) control; aOR 0.50, 95% CI 0.11 to 2.40

Who this works differently for

• In a randomized trial of 78 baked-egg-tolerant children, a stepwise home egg ladder starting from cake reached raw egg tolerance in a median 24 months on an 18 month protocol against 30 months on a 30 month protocol. — Egg-allergic children over 12 months who tolerated baked egg, randomized to an 18 month or a 30 month stepwise home reintroduction from cake to raw egg (n = 78) Evidence B source
  Raw egg tolerance reached by 58 children, 80% of them in the short arm and 69% in the long arm; median time 24 months (95% CI 21 to 27) against 30 months (95% CI 28 to 32), p = 0.005

What is still unknown

• A systematic review found only three eligible egg studies on whether eating baked egg speeds the outgrowing of egg allergy, all weak and uncontrolled, with examples of severe reactions to baked products. — Children aged 0 to 18 years with hen's egg or cow's milk allergy given baked egg or milk, studies with food challenge outcome (n = 3 egg studies) Evidence C source
  No controlled evidence that baked egg accelerates resolution; severe reactions to baked products reported

The bottom line

A medium slice of challah weighs 1.1 oz (31 g) in the US dietary survey, which works out to about 9 micrograms of selenium, a recalculation from the 100 g record and not a measurement of the slice. The thiamin and riboflavin in the same record, 0.438 mg and 0.436 mg per 3.5 oz (100 g), depend on whether the flour was enriched. In the United States a bread may only call itself egg bread, or show an egg on the label, if it holds at least 2.56% whole egg solids by weight. If a child has egg allergy, egg bread carries a real chance of a reaction. Among 150 children referred to an allergy service for possible egg allergy, 40% reacted to baked egg in a double blind challenge, and 16 of the 77 who passed still reacted to lightly cooked egg. In 51 egg-allergic children under six at one Barcelona clinic, 56.9% tolerated baked egg in an open challenge, and 2 of the 22 who reacted needed epinephrine. Pooled data from 29 mostly uncontrolled studies associate baked egg immunotherapy with tolerance in 49% of children and allergic reactions in 20%, with 19% reacting at home, and the authors rate that evidence as very low certainty with a high risk of bias. Whether baked egg speeds the outgrowing of the allergy is still open. A 2017 systematic review found only three egg studies on the question, all weak because none had a proper control group, and it recorded severe reactions to baked products. A later randomized trial of 78 children who already tolerated baked egg compared two home egg ladders starting from cake. The 18 month plan reached raw egg tolerance in a median 24 months (95% CI 21 to 27), against 30 months (95% CI 28 to 32) on the 30 month plan. That trial had no arm that avoided egg, so it compares two speeds and cannot show that a ladder beats waiting. Baked egg for an allergic child is a decision for the allergist who confirmed the allergy.

Sources

1. egbr-daily-r3-01 · food composition dataset
   Bread, egg (FDC 172673, SR Legacy, Baked Products) per 100 g: selenium 30.1 ug; thiamin 0.438 mg; riboflavin 0.436 mg ... Bread, egg, toasted per 100 g: selenium 32.9 ug; thiamin 0.385 mg; riboflavin 0.432 mg
   USDA FoodData Central, SR Legacy, record 172673 (Bread, egg) · checked 2026-10-02
2. egbr-daily-r3-03 · regulation
   When the label bears any representation, other than in the ingredient listing, of the presence of egg in the food, e.g., the word egg or any phonetic equivalent spelling of the word egg, or a picture of an egg, the food shall contain not less than 2.56 percent of whole egg solids.
   21 CFR 136.110, Bread, rolls, and buns (FDA) · checked 2026-10-02
3. egbr-daily-r3-02 · food portion dataset
   Bread, egg, Challah (FNDDS 51119010, FDC 2707624): 1 small or thin/very thin slice 24 g; 1 medium or regular slice 31 g; 1 large or thick slice 43 g; 1 slice, crust not eaten 14 g; Quantity not specified 31 g
   USDA FNDDS 2021-2023, food code 51119010 (FDC 2707624) · checked 2026-10-02
4. egbr-daily-r3-04 · randomized controlled trial
   Those who ate baked egg daily for 6 months tolerated boiled eggs and only 47.4% of patients who followed an egg-free diet tolerated boiled eggs (P-value 0.012).
   Allergol Immunopathol (Madr), 2025 · checked 2026-10-02
5. egbr-daily-r3-07 · laboratory study
   Gel electrophoresis revealed that the ovalbumin band became weaker with heating, while the ovomucoid band remained stable. ... heating in the presence of wheat led to a decreased IgE reactivity to ovomucoid.
   Front Allergy, 2022 · checked 2026-10-02
6. egbr-daily-r3-08 · diagnostic accuracy study
   A total of 150 children underwent DBPCFC to BE, 60 (40%) reacted to and 85 (57%) tolerated BE and 5 (3%) had inconclusive oral food challenges (OFC). Seventy-seven children tolerant to BE had DBPCFC to LCE and 16 reacted.
   Allergy, 2023 · checked 2026-10-02
7. egbr-daily-r3-09 · systematic review and meta-analysis
   Tolerance occurred in 69% of EL, 58% of ML, 49% of BE-OIT, and 29% of BM-OIT patients. All-severity allergic reactions occurred in 21% of EL, 25% of ML, 20% of BE-OIT, and 61% of BM-OIT patients ... At-home reactions occurred in 19% of BE-OIT and 10% of BM-OIT patients. ... Certainty of evidence was very low, and risk of bias high.
   J Allergy Clin Immunol Pract, 2024 · checked 2026-10-02
8. egbr-daily-r3-11 · cross-sectional study
   Fifty-one children completed BE-OFC; 56.9% were tolerant. Tolerance was lower in those with prior anaphylaxis (35.7% vs 64.9%), without statistical significance (p = 0.111). During BE-OFC, epinephrine was required in only two of 22 non-tolerant patients.
   Eur J Pediatr, 2026 · checked 2026-10-02
9. egbr-daily-r3-05 · randomized controlled trial
   After the intervention there was no difference in raw egg tolerance between groups, (23.5% (4/17) intervention group and 33.3% (6/18) control group).
   World Allergy Organ J, 2017 · checked 2026-10-02
10. egbr-daily-r3-06 · randomized controlled trial
    Fifty-eight children reached the raw egg tolerance endpoint, of which 80% were in the short arm and 69% in the long arm. Within the short arm, the median time to raw egg tolerance was 24 months (95% CI, 21-27 months) compared to 30 months (95% CI, 28-32 months) in the long arm (p = 0.005).
    Front Allergy, 2022 · checked 2026-10-02
11. egbr-daily-r3-10 · systematic review
    Only three hen's egg and three cow's milk studies fulfilled our pre-specified inclusion criteria. ... However, when critiqued, all studies were classified as weak because they were observational, lacking an appropriate control group; this brings into doubt the study's conclusions. There were a number of examples of severe reactions to baked products.
    Clin Exp Allergy, 2017 · checked 2026-10-02