Overview of asthma /David A. Cramer, Teresa G. Odle, and Tish Davidson -- Causes of asthma / USA Today Magazine -- Diagnosis of asthma / Cleveland Clinic -- Treatment of asthma / National Heart, Lung, and Blood Institute -- Self-care for asthmatics / Carl Sherman -- Burden of childhood asthma / A. Ursulla Courtney, Daniel F. McCarter, and Susan M. Pollart --Asthma and exercise /Arthur Schoenstadt --Vaccines are a cause of asthma / Mark F. Blaxill -- Vaccines do not cause asthma / Stephen Brearey and Rosalind Smyth -- Air pollution is a major cause of asthma / Natural Resources Defense Council -- Air pollution is not a major cause of wintertime asthma / William Allstetter -- Food allergies are a major factor in asthma / Gale Jurasek -- Food allergies are not a major factor in asthma / International Food Information Council Foundation -- Controversy lingers over asthma drug safety / Steven Reinberg -- Personal accounts of asthma / Kathiann M. Kowalski -- Healthier than an Olympic swimmer / Nancy Hogshead -- Parent's tale of coping with her child's asthma / Denise Grady -- From Olympian to congressman, with asthma / Jim Ryun -- Learning what it is like to be asthmatic / Vincent McGovern.