Dr. Leung is interested in the adverse effects of chemical pollutants on human health and the environment. In particular, he is interested in how an increase in cannabis production and use may affect the chemical and other environmental exposures in air, water, soil, and food as well as their consequences on human health. Prior to joining ASU, he worked in the Department of Pesticide Regulation at the California Environmental Protection Agency. He participated in California’s effort to end the use of the pesticide chlorpyrifos and co-authored the scientific assessment of chlorpyrifos as a toxic air contaminant. Additionally, he contributed to the establishment of the state’s limits on pesticide residues in legalized cannabis. Currently, he is serving on the Medical Marijuana Testing Advisory Council of the Arizona Department of Health Services.
Dr. Leung is teaching in the Pharmacology and Toxicology (B.S.) and Biological Data Science (M.S.) programs at ASU. The primary objective of his research is to identify the potential health hazards of cannabis-contaminant co-exposure on teenagers, women of childbearing age, as well as cannabis users with susceptible medical conditions. The key areas of his expertise include molecular and systems toxicology; computational modeling; data visualization; and human health risk assessment. Dr. Leung and his team are currently working on two projects: (i) the mitochondrial mechanism of neurotoxic effects of cannabis contaminants and (ii) cannabis use patterns and contaminant exposure in patients with Parkinson’s Disease. Additionally, Dr. Leung is collaborating with other investigators at ASU to develop novel geospatial analysis to dissect the complex socio-ecological issues related to cannabis, human health, and the environment.
Postdoctoral fellowship, U.S. Environmental Protection Agency (2016); Ph.D., Duke University (2012); M.Sc., University of Guelph (2007); B.Sc., University of Hong Kong (2004)