Professor Joseph J.Y. Sung received his medical degree (MB BS) from The University of Hong Kong in 1983, and was conferred PhD in biomedical sciences by the University of Calgary in 1992 and MD by The Chinese University of Hong Kong (CUHK) in 1997. Professor Sung holds fellowships from the Royal Colleges of Physicians of Edinburgh, Glasgow, London, and Australia, the American College of Gastroenterology, the American Gastroenterological Association, the Hong Kong College of Physicians, and the Hong Kong Academy of Medicine. He is concurrently Mok Hing Yiu Professor of Medicine of CUHK, an Academician of the Chinese Academy of Engineering of the People's Republic of China, and Academician of the Eurasian Academy of Sciences.

 As a renowned scientist in gastroenterology, Professor Sung’s research interests include intestinal bleeding, Helicobacter Pylori, peptic ulcer, hepatitis B, colorectal cancer, and other cancers related to the digestive system. Professor Sung and his team proved the relationship between H. Pylori and peptic ulcer diseases. They were first in demonstrating that a course of antibiotics lasting a week can cure H. Pylori infection and successfully treat peptic ulcers and minimize their relapse. At the same time, he and his research team pioneered the use of endoscopic treatment for ulcer bleeding to reduce the need for operative surgery. These research results have a major impact on and have changed the practice of gastroenterology worldwide.