Allergies and Intolerances

Food Allergies and Intolerances

A food intolerance is not the same as a food allergy. An intolerance may cause discomfort and unwanted symptoms, but it is not life-threatening.

Each year, millions of Americans have allergic reactions to food. Learn about the different types of allergies, how to avoid foods that make you sick, food alternatives and more.

Feeding the Child with PKU

Phenylketonuria (PKU) is a genetically inherited birth defect that causes an unwanted buildup of the amino acid phenylalanine in the blood, and a strict diet limited in phenylalanine is the main treatment.

A food intolerance or sensitivity is not the same as a food allergy. Different food intolerances have different causes. An intolerance occurs when your body is unable to digest a certain component of a food.

Processed Foods and Ingredients That May Contain Wheat, Rye and Barley

Many packaged foods can contain gluten even if the ingredients don't include wheat, rye or barley. The following are some common processed foods that may contain gluten that people with celiac disease should avoid.

People with food allergies or intolerances need to avoid foods that make them sick. But navigating menu items and dishes, where many foods include a combination of ingredients, can be difficult

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