Chapter 26: Food Allergy

Question 1

Define Food Allergy

Answer 1

food protein/glycoproteins + Immune System

Lecture: adverse immune reaction to a food, usually a protein

Textbook: an adverse health effect arising from a specific immune response that occurs reproducibly on exposure to a
given food.

Question 2

What are the 3 food allergy reaction responses?

i.e. _______ mediated

Answer 2

1. IgE-Mediated
2. Non-IgE Mediated
3. Mixed IgE and non-IgE mediated

Question 3

What is IgE-Mediated Food Allergies

Answer 3

Rapid onset, mediated by histamine release (e.g., peanut allergy).

Question 4

IgE-Mediated Reactions are certain ________ elicit the production of ______ ________ _______

Answer 4

Certain foods elicit the production of immunoglobulin E (IgE) antibodies.

Question 5

What is the body’s response to IgE Mediated reactions

Answer 5

When the allergen is consumed, IgE binds to it and triggers the release of histamine and other inflammatory mediators from mast cells and basophils.

Question 6

2. Non-IgE Mediated
   Reactions are

Answer 6

Delayed responses, often gastrointestinal (e.g., food protein-induced enterocolitis).

Question 7

what are 3. Mixed IgE and non-IgE mediated

Question 8

List the symptoms of allergic reactions to food

Answer 8

Urticaria: hives
Anaphylaxis: life-threatening and affect organs

Question 9

List Mild Symptoms of Food Allergy Reactions

Answer 9

Itching, hives, swelling of the face or lips.

Question 10

List Severe Symptoms of Food Allergy Reactions

Answer 10

Difficulty breathing, hypotension, anaphylaxis.

Question 11

List Gastrointestinal Symptoms of Food Allergy Reactions

Answer 11

Nausea, vomiting, diarrhea (can overlap with non-allergic reactions).

Question 12

List the Nine Most Common Food Allergens

Answer 12

Milk.
Eggs.
Peanuts.
Tree nuts.
Soy.
Wheat.
Fish.
Shellfish.
Sesame (recently added in the U.S.).

Question 13

Explain Allergen Labeling Regulations

Answer 13

In the U.S.:
The Food Allergen Labeling and Consumer Protection Act (FALCPA) requires the declaration of the top 9 allergens on packaged foods.
Allergen warnings must use plain language (e.g., “Contains: Milk”).

Question 14

Recommendations to Prevent Food Allergies

Answer 14

Gradual introduction of allergenic foods in infants at 4–6 months (as per guidelines).
Avoidance of allergenic foods in individuals with confirmed allergies.