Allergy Shots Could Prevent Asthma
Aug. 21, 2000 -- Hay fever and asthma often go hand in hand, and a new study shows that allergy shots may be able to wipe out both of them. Researchers have found that children who are given allergy shots are far less likely to go on to develop asthma.
With the shots, "we see encouraging results, with a significant reduction in the number of patients developing asthma," researcher Lars Jacobsen, MD, director of medical communication and clinical relations for ALK-Abello Group of Hoersholm, Denmark, tells WebMD.
Jacobsen and colleagues wanted to see if allergy shots could help prevent the development of asthma, since about one third of people with hay fever also have asthma. The researchers recently presented their findings at an international conference in New York sponsored by the American College of Allergy, Asthma and Immunology.
So far, only the results of the first three years of the 10-year study -- involving 208 children ages 6 to 14 with allergies to birch, grass pollen, or both -- are available. The children received either allergy shots or treatment with standard medications to control their allergy symptoms.
"When we compare these groups, we see at least a 50% reduction in the number of children that have asthma" among those who got the shots, Jacobsen tells WebMD. "Ask any allergist who has done this treatment for 20 years, and the immediate reaction is, 'I knew it. I had this feeling.' They all have this feeling, but no one had ever tried to show it."
While the link between allergic hay fever and asthma "has long been known, this is the first large study to suggest that allergy shots not only help rid patients of hay fever symptoms, but also may prevent them from developing into the more serious disease of asthma," says Jacobsen. Approximately 80% of all asthma in children and 50% of asthma in adults is caused by allergies.
Symptoms of respiratory allergies -- often called hay fever -- typically include watery eyes, sneezing, nasal congestion, and wheezing. Attacks are commonly trigged by such substances as plant pollens, dust, and pet dander. Asthma shows itself as recurring attacks of breathing difficulties, coughing, wheezing and chest tightness. In addition to the allergy-causing substances, known as allergens, other triggers for asthma attacks may include exercise, cold air, and pollution.
With the shots, "we see encouraging results, with a significant reduction in the number of patients developing asthma," researcher Lars Jacobsen, MD, director of medical communication and clinical relations for ALK-Abello Group of Hoersholm, Denmark, tells WebMD.
Jacobsen and colleagues wanted to see if allergy shots could help prevent the development of asthma, since about one third of people with hay fever also have asthma. The researchers recently presented their findings at an international conference in New York sponsored by the American College of Allergy, Asthma and Immunology.
So far, only the results of the first three years of the 10-year study -- involving 208 children ages 6 to 14 with allergies to birch, grass pollen, or both -- are available. The children received either allergy shots or treatment with standard medications to control their allergy symptoms.
"When we compare these groups, we see at least a 50% reduction in the number of children that have asthma" among those who got the shots, Jacobsen tells WebMD. "Ask any allergist who has done this treatment for 20 years, and the immediate reaction is, 'I knew it. I had this feeling.' They all have this feeling, but no one had ever tried to show it."
While the link between allergic hay fever and asthma "has long been known, this is the first large study to suggest that allergy shots not only help rid patients of hay fever symptoms, but also may prevent them from developing into the more serious disease of asthma," says Jacobsen. Approximately 80% of all asthma in children and 50% of asthma in adults is caused by allergies.
Symptoms of respiratory allergies -- often called hay fever -- typically include watery eyes, sneezing, nasal congestion, and wheezing. Attacks are commonly trigged by such substances as plant pollens, dust, and pet dander. Asthma shows itself as recurring attacks of breathing difficulties, coughing, wheezing and chest tightness. In addition to the allergy-causing substances, known as allergens, other triggers for asthma attacks may include exercise, cold air, and pollution.
SHARE
