How big is this problem? How many people are affected by asthma and allergies?

About 50 million Americans suffer from allergies, and 26 million Americans suffer from asthma. Asthma alone is the #1 cause of school absenteeism and #1 cause of ER visits among children, contributing to the healthcare cost burden from doctor’s visits, ER visits, and hospitalisations. This problem is worsening by the decade; and there has been a 100% increase in asthma and allergy prevalence over the past 30 years. Now, asthma and allergies are considered a Top 5 Hazard to Human Health Worldwide!