He completed an MD and residency in neurology at the University of Toronto, a clinical sleep fellowship at the Beth Israel Deaconess Medical Center in Boston and a Master’s Degree in clinical investigation at Harvard Medical School. Dr. Lim’s research is focused on using statistical genetic, neuropathological and epidemiological studies to better understand the genes and neural circuits that regulate individuals’ biological clocks and their sleep, and how disruption of sleep and biological rhythms (as seen in conditions such as insomnia, shift-work and jet-lag) impact individuals’ risks for such common medical disorders as Alzheimer’s disease, Parkinson’s disease, heart disease and stroke.