major food allergens (fish, eggs, bread, nuts, milk, grains, etc)

A food allergy is an immune system reaction that occurs after eating certain foods. Approximately 2 percent of adults and up to 8 percent of children under age 5 experience true food allergies. True food allergens are proteins. The difference between an allergy and intolerance is how the body handles the offending food.

In a true food allergy, the body's immune system recognizes a reaction-provoking substance, or allergen, as foreign and produces antibodies to halt the "invasion." As the battle rages, symptoms appear throughout the body. The most common sites are:Allergy symptoms vector

  • the mouth (swelling of the lips),
  • digestive tract (stomach cramps, vomiting, diarrhea),
  • skin (hives, rashes or eczema), and
  • airways (wheezing or breathing problems).

There is currently no cure for food allergies; the only course is strict avoidance of an offending food. For an individual with food allergies, the biggest problem is knowing whether an allergen is contained in a particular food.

Food intolerance is due to a chemical deficiency (commonly lack of a specific enzyme) and causes problems with digestion. Lactose intolerance is an example of food intolerance.

The United States Food and Drug Administration (FDA) has identified nine foods (or food ingredients) that are responsible for 90 percent of allergic reactions. Under the FASTER Act of 2021, sesame is recognized as the 9th major food allergen effective January 1, 2023. Individuals can be allergic to many other foods but the Food Allergen Labeling and Consumer Protection Act of 2004 (FALCPA) |  identified the following foods as allergens:young boy with allergen symptoms

  1. Milk and milk products
  2. Eggs
  3. Peanuts
  4. Soybeans
  5. Tree nuts (e.g. almonds, walnuts, pecans)
  6. Wheat
  7. Crustacean shellfish (e.g. crab, lobster, shrimp)
  8. Fish (e.g. cod, bass, tuna, salmon)
  9. Sesame

Allergen risk assessment and control is not an easy task at the manufacturing level, let alone at the retail level. Retail food establishments also need to evaluate their operations to determine where allergen hazards might occur and establish methods for managing those hazards.

Steps to control an allergen risk:

  1. Identify which allergens are handled in the retail food establishment.allergen warning sign
  2. Determine which food products contain each allergen.
  3. Evaluate all aspects of the operation to control each allergen. 

Ingredient Purchasing and Storage

  • Obtain a fully disclosed ingredient list from the supplier including details on sub-ingredients
  • Protect raw ingredients in storage to prevent contamination
  • Label raw material to indicate allergen content
  • Be mindful when substituting raw materials
  • Check ingredient list annually to verify there have not been changes from the supplier

Production / Preparation

  • Production scheduling: make products with allergenic products with allergenic ingredients all at one time or at the end of a production run, then perform a complete clean-up before running other products
  • Do not allow reuse of single service articles such as tray liners, gloves, or aprons
  • Dedicate separate utensils or equipment to allergenic products whenever possible
  • Protect work-in-process from cross-contact with allergenic products/ingredients in use at other work areas
  • Discourage rework or carry-over product; if necessary only use like into like product
  • Use standardized recipes so that ingredients are the same from one batch or serving to the next. Dedicate production systems, use separate lines, equipment, rooms, or even facilities where necessary
  • Develop an allergen matrix or changeover grid to identify what practices or production changes need to be made between flavors or products (spray down or full clean up)
  • Provide lockouts on equipment that uses or supplies allergenic ingredients
  • When sampling the product in process, be certain that the sampling device is sanitized appropriately between products
  • Allow adequate clean up time between production

Packaging and Labeling

  • Verify level accuracy; update to reflect current formulafood ingredient list magnified
  • Ensure compliance with labeling regulations which generally requires declaration of all ingredients; exception to this includes spices, some colors, flavors and processing aids and incidental additives at insignificant levels or that have no technical function or effect. Allergenic ingredients are never exceptions, they MUST be declared at any level - there is no "insignificant level"
  • Check labels on incoming ingredients; supplier may have sent the wrong product or may have used the wrong label
  • Limit use of precautionary labeling (such as "may contain") in lieu of good manufacturing practices. Do not list ingredients that are not in the formula
  • Consider cross-contact potential on packaging / portioning utensils


  • Have standardized procedures for sanitation operations (SSOP's) and ensure they are followed
  • Use appropriate cleaning methods (detergents/cleaning chemicals, water, and sanitizer)
  • Ensure proper storage of clean items
  • Specify employee practices - hand washing at appropriate times (for example, after handling a product that contains allergens, such as peanuts); proper hand washing procedures; use of clean clothing/aprons / gloves and when to change

Display / Service

  • For bulk food displays, use dedicated trays or display areas, post food allergen warning notice on store windownotification of allergen hazards with signs at point of display, and place foods with allergens towards the bottom
  • If foods with allergenic ingredients can not be adequately separated, offer only as packaged food
  • For in-store demonstrations, prominently display the ingredient list and do not provide product to unaccompanied children
  • Consider a sign or menu statement that individuals with food allergies, intolerance or sensitivities may request information about the ingredients of anything served or sold (all employees should be trained and have access to this information)

Staff Training / Education 

  • Ensure all employees have an understanding of allergens, the hazards of undeclared allergens on labels, andstaff training materials the ability to identify common allergens in all foods sold
  • Train employee groups on specific allergen concerns; kitchen employees need to understand about cross-contact potentials, service staff need to have ingredient lists available when customers inquire. It is better for them to say they don't know if an ingredient is included than to risk a customer's health
  • Points to include in a training program:
    • define allergens
    • consequences to sensitive people
    • importance of allergen control
    • most common areas where problems occur
    • accurate labeling
    • control measures

Food manufacturers and retailers must properly label food products that contain ingredients, including flavoring, coloring, or incidental additives that are, or contain, protein from a major food allergen using plain English to identify the allergens. This can be accomplished in one of two ways.

1. Include the name of the food source in parenthesis following the common or usual name of the major food allergen in the list of ingredients in instances when the name of the food source of the major allergen does not appear elsewhere in the ingredient statement. For example:


Ingredients: Enriched flour (wheat flour, malted barley, niacin, reduced iron, thiamin mononitrate, riboflavin, folic acid), sugar, partially hydrogenated soybean oil, and/or cottonseed oil, high fructose corn syrup, whey (milk), eggs, vanilla, natural and artificial flavoring) salt, leavening (sodium acid pyrophosphate, monocalcium phosphate), lecithin (soy), mono-and diglycerides (emulsifier)

2. Place the word "contains" followed by the name of the food source from which the major food allergen is derived, immediately after or adjacent to the list of ingredients, in type size used for the list of ingredients. For example: 

Contains Wheat, Milk, Eggs, and Soy 

For additional information, visit Food Ingredients that May Cause Allergies