Read about the benefits of chiropractic for Asthma. Asthma has become a large health concern for children in recent years. Over the past 20 years the incidence of asthma has doubled. The Centers for Disease Control and Prevention (CDC) estimated that in 1998, approximately 17,299,000 people in the United States, or 6.4% of the population, with cases among very young children up 160%.