Dr David Lui obtained his MBBS degree with Honours from the University of Hong Kong in 2012 and obtained his MRCP (UK) in 2015. He completed his specialty training in Endocrinology, Diabetes and Metabolism in 2019 and Advanced Internal Medicine in 2020 at the Queen Mary Hospital. He joined the Department of Medicine, the University of Hong Kong, as a Clinical Assistant Professor since March 2021.

Dr Lui's research interests include diabetic bone disease, and endocrine complications of cancer treatments and infections. Supported by the Hong Kong Society of Endocrinology, Metabolism and Reproduction and the Training and Research Assistance Scheme of the Queen Mary Hospital Charitable Trust, he studied the role of biomarkers in the bone health in type 2 diabetes. Later he went on to study the epidemiological aspect of fractures in diabetes using a territory-wide electronic health database. Amidst the COVID-19 pandemic, he has established a cohort of COVID-19 patients for the ongoing evaluation of endocrine dysfunction associated with COVID-19. His publication titled 'Thyroid Dysfunction in Relation to Immune Profile, Disease Status and Outcome in 191 Patients with COVID-19' has been listed among the Highly Cited Articles in the Journal of Clinical Endocrinology & Metabolism. He has published over 30 peer-reviewed articles in international journals including Diabetes Care, International Journal of Epidemiology and the Journal of Clinical Endocrinology & Metabolism. He has also served as a reviewer in journals including Thyroid and Journal of Diabetes Investigation. In recognition of his research work, he has been awarded locally and internationally, including the recent Distinguished Research Paper Award for Young Investigators from the Hong Kong College of Physicians (2021) and the Rising Star Award in the International Congress of Diabetes and Metabolism (2021).