This pro/con session will review the evidence on four current controversies in pediatric asthma: 1) Early environmental allergen exposure prevents asthma; 2) Vitamin D supplementation should be a part of asthma management; 3) FeNO should be a standard part of asthma monitoring; and 4) Intermittent ICS is preferred therapy for preschool children with intermittent asthma. Each speaker will review current literature as they present their argument either for or against the topic statement.