This issue of Immunology and Allergy Clinics, devoted to Obesity and Asthma, is edited by Dr. Anurag Agrawal. Articles in this issue include: Clinical Implications of the Obese Asthma Phenotypes; Childhood Obesity and the Risk of Allergy; Metabolic Asthma: Is there a link between obesity, asthma, and diabetes?; Role of Weight Management in Obese-Asthma Control; Obesity and Airway Disease: A Bioenergetic Problem?; Nutrition, Obesity, and Asthma: Exploring Epigenetic Programming; Obesity and Asthma: The Role of Environmental Pollutants; Novel Therapeutic Strategies for Adult Obese Asthmatics; and From ADMA to Asthma.