Although there are many books on clinical sleep disorders medicine and many books on public health, this source will be the first book ever published on this subject. Such an approach has rarely been tried in this particular area of sleep and mental illness. This book will offer special advantages as it will cover interdisciplinary areas of sleep and health which is long over due in the whole medical field. By bringing the public health aspects into the volume, the editors hope to develop the concept with a totally new undercurrent by adding several newer dimensions that have emerged in the last few years.