Professor Alastair John O'Brien

About Professor Alastair John O'Brien

Professor Alastair O'Brien is a renowned consultant hepatologist and Professor of Hepatology at University College London, with expertise in managing a wide range of liver diseases. He is dedicated to addressing all forms of liver conditions, from abnormal liver blood tests to advanced cirrhosis. His clinical interests include elevated liver blood tests, alcohol-induced liver disease, liver cirrhosis, and obesity-related (fatty) liver diseases and liver cancer, as well as rarer conditions like primary biliary cholangitis and autoimmune liver disorders. He combines his private practice at Cleveland Clinic Portland Place and Grosvenor place with his NHS role at Royal Free London NHS Foundation Trust, where he focuses on comprehensive patient care and cutting-edge research. Prof. O'Brien's work has been published in top global journals, including The Lancet, Nature Medicine, and The New England Journal of Medicine, reflecting his commitment to advancing hepatology research and treatment. His patient-centered approach combines clinical excellence with a relaxed, professional manner, ensuring that individuals dealing with liver health challenges receive the best care and support.