Asthma and obesity are common problems among U.S. children, and a new report in the Annals of Allergy, Asthma & Immunology ponders how obesity contributes to childhood asthma.
Nearly 7 million U.S. children have asthma, and more 12 million kids from 2 to 9 years old are obese. According to the American College of Allergy, Asthma and Immunology (ACAAI), obese children have an increased risk of developing asthma. An ACAAI news release accompanying the journal report acknowledges link between childhood obesity and asthma, but said research hadn’t determined which condition generally occurs first, or whether one causes the other.
This study suggests that being overweight comes first, although the connection is complex and many factors have yet to be examined.
The report showed that rapid growth in body mass index (BMI) during the first 2 years of life increased the risk of asthma until kids were 6 years old. Previous studies showed that the onset and duration of obesity and the ratio of lean tissue to excess fat can affect lung function. (See our blog, “Fast Food Diet Shows Link to Breathing Problems.”)
But practitioners often don’t know if the constricted airways characteristic of asthma makes kids unwilling to exercise, and therefore gain unhealthy amounts of weight, or if being overweight narrows airways, prompting the development of asthma.
“Most kids who suffer from asthma also have allergies,” Michael Foggs, MD, and president of ACAAI, said in the news release. “These allergic responses in the lung can lead to symptoms of allergy. Coughing, wheezing and shortness of breath are all symptoms that make exercise harder.”
The ACAAI says that children with asthma and other allergic diseases should be able to participate in any sport they want to as long as their condition is monitored and controlled. If they show symptoms of asthma during or immediately following exercise, it’s an indication that their condition is not being properly controlled.
In other words, asthma shouldn’t be so severe that it restricts a kid from being active; it’s a condition that can be managed and accommodated.
For advice from allergists about dealing with your child’s asthma, link here. To learn more generally about asthma and allergic conditions, and to locate an allergist in your area, link here. For information about hospital treatment of children with asthma, see our blog, “Assessing the Quality of Hospital Care for Children with Asthma.”