Despite its prevalence, insomnia remains poorly understood, mainly because of the lack of clear scientific data supporting the many approaches used. Millions of sufferers turn to alcohol, melatonin or over-the-counter sleep aids, despite the risks and lack of empirical evidence supporting the efficacy or safety of these agents. This book is the first of its kind to collate the up-to-date scientific data in order to identify the gaps in our knowledge and improve clinical management. A highly distinguished team of contributors examines the most recent findings and points where research should be heading. They cover the nature and prevalence of insomnia throughout the lifespan; the molecular, neuropharmacological, and neuroanatomical systems of relevance to insomnia, and the impact of related problems (such as shift work, industrial accidents, mood disorders, and other sleep disorders). This is essential reading for all health care professionals engaged in the management of insomnia.