This book offers an essential overview of aspiration pneumonia, and focuses on four major aspects: epidemiology, pathophysiology, new preventive strategies, and trending topics. Each part presents detailed findings and insights into critical issues for the treatment of the disease including its diagnosis, assessment, selecting antibiotics, similarities and differences between aspiration risk and aspiration pneumonia risk, different therapeutic approaches and so on. The book also discusses emerging topics concerning the definition of NHCAP and sleep apnea. Special attention is given to therapeutic and preventive approaches for the elderly, highlighting recent advances and the evidence on their positive outcomes. Since the patients with this disorder are often in a post-stroke state and elderly, the book is highly relevant for neurologists and geriatric physicians. Further, many surgeons also face this type of pneumonia in association with postoperative complications and cancer therapy related complications. Lastly, the definition of aspiration pneumonia and its therapeutic strategy have yet to be established in many countries, and the data presented here should serve as a guideline for its future diagnosis and treatment. As such, the book offers a valuable resource for primary physicians, pulmonologists, gerontologists, respiratory nurses, physical therapists, dentists and otolaryngologists alike.