Asthma explained by common allergy to milk and dairy products

The link between asthma and cows' milk is familiar to many young asthma sufferers and their parents. I first became aware of the connection through my cousin's experiences with his four-year-old son. Since infancy, my cousin's son has experienced severe asthma attacks and has been hospitalized twice for asthma-related pneumonia. When his asthma attacks become more frequent or more severe, my cousin and his wife respond by temporarily eliminating milk and milk products from his diet, and it usually works. I always assumed that milk worsened his asthma by stimulating mucus production in his lungs. However, studies suggest that, either along with or instead of creating excess mucus, milk may worsen asthma due to an undiagnosed milk allergy.