Book excerpt: Fatty Liver Diseases: NASH and Related Disorders is an unusual book: it combines a practical approach for students and physicians concerned with the problem with a clear overview on the causative mechanisms. It appeals to doctors and other health care workers who encounter this problem, as well as to pathologists and investigators interested in the field of liver disease. It will improve your diagnostic acumen for people with abnormal liver tests, advance your knowledge about this important subject and help with your specialist or undergraduate exams, and management of a common disorder.