Celiac Disease

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Food Allergies

Presented by:

Nelda Mercer, MS, RD, FADA

March 14, 2013

Background – Normal Immune System

 Prevent disease

– external agents: viruses, bacteria, and toxins

– internal agents: cancer cells

 Mount Powerful defense against “invader”

 All Food is foreign to the body

 In most cases, such foreign material is absorbed and incorporated into the human body without difficulty.

Oral Immunological Tolerance

Food is first encountered by the infant through mother’s breastmilk

Contains molecules of food from her diet

Tolerance is developed through the process of low-dose, continuous exposure that is optimal for the development of immunological tolerance .

Food Allergy – Definition

Food allergies are adverse health effects arising from a specific immune response that occurs reproducibly on exposure to a given food.

Boyce, J. et al. Guidelines for the diagnosis and management of food allergy in the United States: Report of the NIAID-Sponsored Expert Panel. Journal of Allergy and Clinical Immunology. 2010; 126(6):S1-S58.

When the body’s immune system mistakenly believes a harmless substance is harmful to the body. It tries to protect the body by releasing IgE antibodies (histamines) to attack the substance.

Immune

Response

Histamine

Reaction

1.

2.

IgE-mediated – food allergen first enters the body immune system produces allergen-specific IgE antibodies ( sIgE ) immunological sensitization

Re-exposure to food, allergen sIgE identifies it and quickly initiates the release of chemicals

Histamine

Common Food Allergies

Eight foods account for

90% of all reactions

Peanuts

Tree nuts

Wheat

Soy

Milk

Eggs

Fish

Shellfish

Risk for Developing Allergies

“At Risk”

– Individuals with a biological parent or sibling with existing, or history of, allergic rhinitis, asthma, or atopic dermatitis.

“High Risk”

– Individuals with preexisting severe allergic disease and/or family history of food allergies

Boyce, J. et al. Guidelines for the diagnosis and management of food allergy in the United States: Report of the NIAID-Sponsored Expert Panel. Journal of Allergy and Clinical Immunology. 2010; 126(6):S1-S58 .

Allergy Testing

Skin Prick Test

Allergen-specific serum

IgE (sIgE)

Atopy Patch Test

Oral Food Challenges

Food Elimination Diet

Food Allergy Facts

What the experts say . . . .

Doubling of food allergy over the past

10 years, particularly peanut allergy .

~15 million Americans affected

 1 in 13 children

 Onset at any age w ww.foodallergy.org

Symptoms:

Urticeria – hives

Pruritus – itching of skin, eyes, ears, mouth

Angioedema – swelling of deeper tissues especially the mouth and face

Wheezing

Cough

Nausea

Vomiting

Hypotension

Anaphylaxis

What is anaphylaxis?

Most severe allergic reaction

40-50% of people diagnosed with food allergies are judged to have a high risk of anaphylaxis

Involves multiple systems at the same time

Potentially fatal, especially if medication is not given promptly – at first signs

What is anaphylaxis?

(cont’d.)

Can occur within minutes of exposure death can occur within as few as 6 minutes

Peanut/Tree nut allergies in combination with asthma is the highest risk

– milk, egg, fish, and crustacean fish

Pattern can vary among individuals

Symptoms of Anaphylaxis

Tingling sensation in the mouth

Swelling of the tongue and throat

Difficulty breathing

Hives

Vomiting

Abdominal cramps

Diarrhea

Drop in blood pressure

Loss of consciousness

Death – in rare cases

Food Allergy Facts

What the experts say . . . .

Food allergy is the leading cause of serious allergic reaction (anaphylaxis) outside the hospital setting.

 over 30,000 ER visits per year

 ~ 175 deaths annually

 reactions caused most often outside the home and by products believed to be safe

 Asthma increases risk of fatal reaction

 Adolescents and young adults are at the highest risk www.foodallergy.org

Bock, et. al J Allergy Clinical Immunol 2001

Food Allergy Facts

What the experts say . . .

● Sensitivity to the allergen can vary

– For some, a speck of allergen can have the same effect as eating a large quantity

– For some, skin contact with the allergen is enough to cause a reaction

– For some, inhalation of the allergen can cause discomfort

– Sensitivity is truly ‘unknown’

● Affected systems can vary between individuals

AND reactions

Allergic Reaction:

What a Child Might Say or Do

Say . . . .

My tongue (or mouth) itches

My tongue is hot or burning

My mouth feels funny

There’s something stuck in my throat

It feels like there are bugs in my ears

This food is too spicy

Do . . . .

Put their hands in their mouths

Pull or scratch at their tongues

Drool

Hoarse cry or voice

Slur words

Become unusually clingy

Food Allergy Facts

What the experts say . . .

No Cure

Strict avoidance is the only way to prevent allergic reactions.

Prevention

Insufficient evidence to conclude that restricting highly allergenic foods in the maternal diet during pregnancy or lactation prevents the development of food allergies in the offspring.

Lack of evidence that delaying introduction of solids beyond 6 months of age (including highly allergenic foods) prevents the development of food allergies.

Prevention

(cont’d)

Protective role of breastfeeding in preventing food allergies needs further study

– Some evidence suggests that breastfeeding for at least

4 months may decrease likelihood of cow’s milk allergy in the first 2 years of life.

– No convincing evidence for the use of soy formula as a strategy for preventing the development of food allergies in at-risk infants, therefore, not recommended .

– For infants who are partially breastfed or formula fed, partially hydrolyzed formulas may be considered a strategy for preventing the development of food allergies in at-risk infants.

Greer, F. et al. American Academy of Pediatrics Committee on Nutrition. Pediatrics. 2008; 121(1 )

Hydrolyzed Michigan WIC

Authorized Formulas

Product Extent of Hydrolyzed Protein Indication

Good Start Nourish Partially hydrolyzed whey protein Reflux and spitting up

Nutramigen with Enflora LGG Extensively hydrolyzed casein (protein) Cow’s milk allergy

Nutramigen

Similac Expert Care

Alimentum

Elecare Infant/Elecare Jr

Extensively hydrolyzed casein (protein) Cow’s milk allergy

Hydrolyzed casein with free amino acids

100% free amino acids

Hypoallergenic

Hypoallergenic

EO28 Splash 100% free amino acids

Hypoallergenic, cow and soy milk allergy, multiple food protein intolerance

Neocate Infant/Neocate Junior 100% free amino acids

Pediasure Peptide 1.0/1.5

¹ Hydrolyzed whey – dominant protein

Hypoallergenic

Malabsorption and maldigestion

Peptamen Jr 1.0/1.5

²

Hydrolyzed – 100% whey protein Malabsorption

¹ Contains milk and soy ingredients

² Not appropriate for individuals with cow's milk allergy

January, 2013

Summary of

Recommendations

• Avoidance diets

• Breastfeeding

• Selection of infant formula

• Introduction of complementary foods http://www.jaci-inpractice.org/article/S2213-

2198(12)00014-1/fulltext#sec1.1

Can Children Outgrow Food Allergies?

Yes:

– Cow’s milk, soy, eggs, wheat

NO:

– Peanut, tree nuts, fish, and crustacean shellfish

Implications for WIC Professionals

Client-centered counseling

Assist families with food allergies in making changes that improve quality of life and promote nutritional wellbeing while avoiding offending foods.

Implications for WIC Professionals

Based on the needs and interests of the WIC client:

Facilitate and encourage ongoing follow-up with the health care provider for optimal management of the client’s condition.

Promote exclusive breastfeeding until 6 months of age and continue through the first year.

Provide hypoallergenic formula for clients with appropriate medical documentation, as needed.

Tailor food packages to substitute or remove offending foods.

Implications for WIC Professionals

(Cont’d)

Based on the needs and interests of the WIC client:

Monitor weight status and growth patterns of clients.

Educate clients about reading food labels and identifying offending foods and ingredients.

Educate clients on planning meals and snacks outside the home.

Refer clients to their health care provider for a re-challenge of offending foods, as appropriate.

Establish/maintain communication with client’s health care provider.

Managing Food Allergies

Food allergen avoidance is the safest method

Work closely with health care provider to determine the foods to be avoided

– Avoid cross-reactive foods similar foods within a food group

– all shellfish are closely related

– tree nuts: almonds, cashews, and walnuts

The Food Allergen Labeling and Consumer

Protection Act (FALCA)

The Food Allergen Labeling and Consumer

Protection Act (FALCA)

Effective January 1, 2006

Mandates that food labels show major food allergens

(milk, eggs, fish, crustacean shellfish, peanuts, tree nuts, wheat, and soy) and declare the allergen in plain language , either in the ingredient list

. . . . . . or via:

 “Contains” followed by the name of the major food allergen

• “Contains milk, wheat…..” – or

A parenthetical statement in the list of ingredients

• “albumin (egg)”

Ingredients must be listed if they are present in any amount, even in colors, flavors, or spice blends.

Additionally, manufacturers must list :

 specific nut : almond, walnut, cashew

 or seafood : tuna, salmon, shrimp, lobster

The Food Allergen Labeling and Consumer

Protection Act (FALCA)

Effective January 1, 2006

Mandates that food labels show major food allergens

(milk, eggs, fish, crustacean shellfish, peanuts, tree nuts, wheat, and soy) and declare the allergen in plain language , either in the ingredient list

. . . . . . or via:

Consumers

 “Contains” followed by the name of the major food allergen

MUST continue

A parenthetical statement in the list of ingredients

to read all food

● even in colors, flavors, or spice blends.

Additionally, manufacturers must list :

 specific nut : almond, walnut, cashew

 or seafood : tuna, salmon, shrimp, lobster

INGREDIENTS: ENRICHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN,

IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID), DEGERMED YELLOW

CORN MEAL, WHOLE WHEAT, VEGETABLE OIL (SOYBEAN, RIC BRAN AND/OR

CANOLA), ENRICHED FLOUR BLEACHED (WHEAT FLOUR, NIACIN,IRON,THIAMIN

MONONITRATE, RIBOFLAVIN, FOLIC ACID), PARTIALLY HYDOGENATED SOYBEAN

OIL, SUGAR, SALT, CONTAINS 2% OR LESS OF: MONOSODIUM GLUTAMATE,

MALTODEXTRIN, RYE FLOUR, YEAST, GARLIC POWDER, CORN SYRUP, SOLIDS,

HIGH FRUTOSE CORN SYRUP,MARGARINE(PARTIALLY HYDROGENATED SOYBEAN

OIL, SALT, MONO AND DIGLYCERIDES, SOY LECITHIN, WHEY, BETA CAROTENE,

VITAMIN A PALMITATE, NATURAL FLAVOR), MALT, BAKING SODA, BARLEY MALT

EXTRACT,CORN SYRUP,NATURAL AND ARTIFICIAL FLAVOR, MALT, SYRUP, SPICES,

SOY LECITHIN

CULTURED NONFAT MILK, SODIUM, DIACETATE, ONION POWDER, DISTILLED

MONOGLYCERIDES, MOLASSES, WHEAT STARCH, GARLIC, YELLOW CORN FLOUR,

COLOR ADDED, TRISODIUM PHOSPHATE, WHEY, CALCIUM CARBONATE,DISODIUM

GUANYLATE, DISODIUM INOSINATE, MONOCALCIUM PHOSPHATE, SODIUM ACID

PYROPHOPHATE, SOY SAUCE (WHEAT, SOYBEANS, SALT, MALTODEXTRIN,

CARAMEL COLOR), TAMARIND EXTRACT, SESAME SEED, ALMOND FOUR, PEANUT

FLOUR, FRESHNESS PERSERVED BY BHT

“Contains” Statements

Warning Labels

May also say…….

“manufactured in a facility that also processes peanuts”

www.fda.gov/

ForConsumers/ConsumerUpdates

How to read a label for:

Milk-Free Diet

Soy-Free Diet

Peanut-Free Diet www.foodallergy.org

faan@foodallergy.org

How to read a label for:

Wheat-Free Diet

Egg-Free Diet

Shellfish-Free Diet

Tree Nut-Free Diet www.foodallergy.org

faan@foodallergy.org

Pediatric Nutrition Care Manual

Pediatric Nutrition Care Manual

Pediatric Nutrition Care Manual

Comprehensive Guide

Features:

• The science behind food allergies and food intolerances

• The role of elimination diets and challenge protocols in identifying food sensitivities

• Symptoms, diagnosis and management of 24 foods and food components

Janice Vickerstaff Joneja Ph.D, RD https://www.eatright.org/shop/product.aspx?id=6442472295

Thank You!

Questions

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