This text provides an overview of brain death. The topics explored in this book include the concept and historical approach of human death, clinical examinations of brain-dead patients, and ancillary tests in coma and brain death. The book also covers bioethical discussions of brain death and its relationship with some consciousness disturbances, and the legal considerations of human death. While there are several books devoted to the study of specific issues of brain death, this book covers almost all the issues.