Dr. Colleen O’Connor

Dr. Colleen O’Connor

Job Title:

 Associate Professor & Academic Director, School of Food and Nutritional Sciences


 Full-Time Faculty




 519.432.8353 x28249


 Ursuline Hall 110

Academic Background

  • PhD, Department of Human Health and Nutritional Sciences, University of Guelph
  • MSc, Department of Human Nutritional Sciences,  University of Manitoba
  • BSc Honors, Human Ecology (Foods and Nutrition), Brescia University

Research and Scholarly Interests

  • Learning and communication needs of preceptors and practicum students
  • The use of technology to promote healthy dietary behaviors, food literacy and local food consumption
  • Health benefits of fermented foods and beverages
  • Nutrigenomics as part of the nutrition care process


  • FN 3353A - Clinical Nutrition I
  • FN 4901Y - Dietetic Simulation Practice 
  • FN 4902Y -  Regulatory, Legal and Ethical Issues of Dietetic Practice 
  • FN 9444B - Advances in Clinical Nutrition

Professional Memberships

  • College of Dietitians of Ontario
  • Dietitians of Canada 
  • Canadian Nutritional Society 

Representative Publications

  • Brown R, Seabrook JA, Stranges S, Clark AF, Haines J, O'Connor C, Doherty S, Gilliland JA. Examining the Correlates of Adolescent Food and Nutrition Knowledge. Nutrients. 2021; 13(6):2044. https://doi.org/10.3390/nu13062044.
  • Horne J, Gilliland J, O'Connor C, et al. Change in weight, BMI and body composition in a population-based intervention vs. genetic-based intervention: The NOW Trial. Obesity 2020; 28(8), p 141927, DOI: 10.1002/oby.22880.
  • Veloce D, Fisher M, Hartman B, O'Connor C, Horne J. Does the Ontario public understand the difference between registered dietitians and unregulated "nutritionists?" Results from a cross-sectional mixed methods study with implications for healthcare policy and law; Health Policy 2020; 16(2): 111-127, DOI:10.12927%2Fhcpol.2020.26349.
  • Horne J, Gilliland J, O'Connor C, et al. Enhanced long-term dietary change and adherence in a nutrigenomics-guided lifestyle intervention compared to a population-based (GLB/DPP) lifestyle intervention for weight management: results from the NOW randomised controlled trial. BMJ Nutrition, Prevention & Health 2020;0.doi:10.1136/bmjnph-2020-000073.
  • Chen M, Al K, Craven L, Seney S, Coons M, McCormick H, Reid G, O'Connor C, Burton J. Nutritional, Microbial, and Allergenic Changes during the Fermentation of Cashew 'Cheese' Product Using a Quinoa-Based Rejuvelac Starter Culture. Nutrients 2020, 12(3),648; https://doi.org/10.3390/nu12030648.
  • Horne J, Gilliland J, O'Connor C. et al. Study protocol of a pragmatic randomized controlled trial incorporated in the Group Lifestyle BalanceTM program: the nutrigenomics, overweight/obesity and weight management trial (the NOW trial). BMC Public Health 19, 310 (2019). https://doi.org/10.1186/s12889-019-6621-8.
  • Toth J, O'Connor C, Hartman B, Dworatzek P, Horne J. "Detoxify or Die". Qualitative assessments of Ontario nutritionists' and dietitians' blog posts related to detoxification diets; CJDPR. 2018. DOI: 10.3148/cjdpr-2018-047.
  • Adam L, O'Connor C, Garcia A. Evaluating the impact of diabetes self-management education methods on knowledge, attitude and behavior of patients with type 2 diabetes mellitus; Canadian Journal of Diabetes; 2018 Oct;42(5):470-477.