Part of The Science Inside series which presents science information in an easy-to-read format, this booklet explains the basics of these respiratory conditions, their relationship to each other, prevention, treatments, and more. It also addresses current biomedical research on these disorders, as well as the role that volunteers play in clinical trials on therapies and new treatments for these conditions. Separate chapters are provided on each condition, which carefully explain such topics as what is healthy breathing, the symptoms and causes of each condition, as well as the societal impacts of asthma and allergies. Included in the appendices are a sample asthma action plan and questions to ask your physician about allergies and asthma. Additional resources, a bibliography, and a glossary are also included.