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Jonathon Maguire

Adjunct Scientist ICES Central Life Stage Research Program


Dr. Jonathon Maguire is an associate professor of pediatrics and nutritional sciences at the University of Toronto and a scientist in the Centre for Urban Health Solutions at the Li Ka Shing Knowledge Institute of St. Michael’s Hospital.  He is a staff pediatrician in the Department of Pediatrics at St. Michael’s Hospital with an active pediatric clinical practice. He has expertise in patient oriented research with a focus on clinical trials involving children’s nutrition and the prevention childhood illness as well as the creation of tools to facilitate evidence informed child health practice. He co-leads TARGet Kids!, the largest practice based research network for children in Canada. Dr. Maguire holds a CIHR Foundation Grant, a CIHR Strategy for Patient Oriented Research (SPOR) Innovative Clinical Trial Multi-Year Grant and a SPOR Chair in Innovative Clinical Trials.  He has received a number of accolades including a Samuel J. Fomon Young Physician Award from the American Society of Nutrition, a Canadian Paediatric Society Young Investigator Award, a Canadian Institutes of Health Research New Investigator Award, an Ontario Ministry of Research and Innovation Early Researcher Award, and a Special Achievement Award from the American Academy of Pediatrics.

  • MSc, Clinical Epidemiology, University of Toronto
  • FRCPC, Pediatric Specialty, University of Toronto
  • MD, University of Toronto
  • Children and youth
  • Pediatric care
  • Diet and nutrition
  • Epidemiology
  • Health equity/social determinants of health
  • Scientist, Li Ka Shing Knowledge Institute, Unity Health Toronto
  • Associate Professor, Paediatrics and Nutritional Science, University of Toronto
  • Scientist, Joannah and Brian Lawson Centre for Child Nutrition, University of Toronto

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