This book is devoted to understanding the impact of respiratory diseases in older patients. It includes reviews of physiology of the aging lung, allergy and immunology of the aging, as well as sleep changes over the life cycle. There are also comprehensive reviews on specific disease topics including chronic obstructive lung disease, lung cancer, atypical mycobacteria, interstitial lung disease, pulmonary hypertension, pulmonary embolism, obstructive sleep apnea, sleep disorders in older patients. Two chapters focus on unique issues in older patients; HIV and lung transplant. Included also are important chapters on assessing functional and cognitive status and end-of-life issues in older patients with lung disease. In addition to outlining the current state of knowledge, each chapter focuses on special considerations when caring for older patients.