Milk is made up of two parts, whey and casein. Whey is the watery portion in the milk and casein is the white lumpy part which you see after the milk turns sour.
Whey protein constitutes 20 percent of protein in milk.
Whey protein allergy is common in children and adults. It is not only with milk, but all dairy products containing whey can be allergic in people suffering from whey protein allergy.
Symptoms of Whey Protein Allergy
- An individual having whey protein allergy, can present with diarrhea, nausea, vomiting, abdominal colic, gas and bloating.
- Whey protein allergy causes skin rash, itching, eczema.
- Red and itchy eyes.
- Swelling of lips, tongue and throat.
- Sneezing, watery nose, cough and wheezing are respiratory symptoms of whey protein allergy.
- In rare cases an anaphylactic whey protein reaction can occur in a hypersensitive individual having allergy to whey.
Whey protein allergy reaction occurs in an individual whose immune system considers whey protein as a harmful substance to the body. It is an IgE mediated antibody reaction which signals the immune system to release histamine to fight the whey protein. As a consequence release of histamine causes the above signs and symptoms.
Also see on Signs of Protein Allergy