Milk allergy

Causes of Milk Protein Allergy

Milk protein allergy is an immune reaction to proteins found in milk. It is more common in infants and young children, but some people may also develop the allergy later in life. The primary proteins in milk that typically cause allergic reactions are casein and whey protein. The causes of milk protein allergy can be complex and include genetic and environmental factors. Here are some possible causes:

• Genetics: Heredity plays a role in whether someone may develop a milk protein allergy. If there is a family history of allergies, including milk allergy, the risk may be higher.

• Immune system reaction: Milk protein allergy occurs when the immune system overreacts to milk proteins as foreign substances. This leads to the release of immunoglobulin E (IgE) and other inflammatory substances that cause allergic symptoms.

• Exposure to milk proteins: Exposure to milk proteins either through food intake or through skin contact (for example, through skincare products containing milk proteins) can trigger an allergic reaction.

• Breastfeeding and early introduction of milk: Studies have shown that breastfeeding and the early introduction of milk products to infants can affect the risk of milk protein allergy. It is important to discuss the introduction of milk products with a pediatrician.

• Allergenic substances in milk: Milk contains a number of allergenic substances, including casein and whey protein, which the body can react to allergically.

It is important to note that milk protein allergy differs from lactose intolerance. Lactose intolerance involves a deficiency of the enzyme lactase, which breaks down milk sugar (lactose) and causes digestive issues, while milk protein allergy is an allergic reaction to the proteins found in milk.

Symptoms of Milk Protein Allergy

Milk protein allergy can cause various symptoms that can vary in severity. Symptoms usually appear within minutes to a few hours after a person has ingested milk protein. Symptoms may include:

• vomiting

• diarrhea

• abdominal pain

• constipation

• loss of appetite

• insufficient weight gain in children

• blood in the stool

• eczema

• hives (urticaria)

It is important to remember that milk protein allergy can be potentially serious and, in some cases, can lead to anaphylaxis, which is a medical emergency.

Treatment of Milk Protein Allergy

The treatment of milk protein allergy primarily involves avoiding foods and products containing milk protein. It is crucial to read ingredient lists carefully and be aware of cross-contamination risks. Here are some aspects to consider when managing a milk protein allergy:

• Milk-free diet: The most important step is to avoid all foods containing milk protein, including milk, cream, yogurt, cheese, butter, and all products containing milk or milk derivatives.

• Read ingredient lists: Precision is key. Read the ingredient lists on all food packaging to identify any milk products or milk derivatives.

• Awareness of cross-contamination: Be aware of the risk of cross-contamination of milk traces in food products and at restaurants. It may be necessary to ask for specially prepared dishes to ensure they do not contain milk protein.

• Advice from a dietitian: A dietitian specializing in allergy and intolerance management can help design a balanced milk-free diet and ensure all nutritional needs are met.

• Emergencies: Individuals with severe milk protein allergy should have an emergency plan that includes the use of adrenaline injections (such as an EpiPen) in the event of a severe allergic reaction like anaphylaxis. It is important to know how to use these injections and have them available when needed.

Important Information Regarding Labeling and Hidden Sources

There is a significant difference between products labeled as "milk-free" (dairy-free) and products stating "may contain traces of milk." A product labeled "milk-free" is guaranteed to be free from milk protein, while "traces of" means the product was manufactured in the same facilities as milk products. Whether one can consume products with a trace warning depends on the severity of the allergy and should always be decided in consultation with a doctor. Also, be extra vigilant regarding hidden sources in ingredient lists, such as caseinate, whey powder, skimmed milk powder, and certain types of flavorings.