Dietary Supplements in Sports: Prevalence, Pitfalls, and Promises

Examine the role of dietary supplements in sports, including doping risks and regulatory issues. This lecture offers insights into the reasons behind supplement use among athletes and fitness enthusiasts, highlighting global trends and regulations.

Objectives: In this lecture, we will explore the definitions and roles of dietary supplements in sports nutrition and examine the link between supplements and doping, including the mechanisms involved. We'll review international regulatory standards to understand the complex rules governing supplement use. The discussion will extend to the widespread use of supplements by both professional athletes and gym enthusiasts, as well as individuals aiming to enhance their diets, with a focus on the reasons behind this trend. The need for specialized nutrition education to ensure safe and informed supplement use and decision-making will be emphasized. The session will conclude with actionable advice for dietitians, sports professionals, and health-conscious individuals on navigating the supplement landscape responsibly. Moreover, this lecture will prompt a reflection on the fact that many individuals, often without any nutritional deficiencies, turn to supplements based on insufficient information, underscoring the critical need for improved education and understanding in this area.

Pre-recorded lecture: Instantly accessible upon purchase for convenient viewing at your own pace.
English, Spanish and Portuguese (CC) Closed Captions available.*
🇪🇸 Subtítulos disponibles en español.
🇧🇷 Legendas disponíveis em português.
60 minutes
$39.00 USD 
Credit Card, PayPal
(Available globally)**

U.S. and International

$39 USD

U.S. Dollar



R$199 BRL

Real Brasileiro



Dr. Dalia El Khoury, PhD, RD

Associate Professor
Department of Family Relations and Applied Nutrition
University of Guelph

Dr. El Khoury is an Associate Professor of Applied Human Nutrition in the Department of Family Relations and Applied Nutrition at the University of Guelph. She has received a BSc in Nutrition and Dietetics and an MSc in Nutrition at the American University of Beirut, Lebanon. Afterward, she completed her PhD in Physiology and Physiopathology at the University of Pierre et Marie Curie, France. She served as a lecturer at the American University of Beirut, and as a postdoctoral fellow and lecturer at the University of Toronto.

Dr. El Khoury has also worked in the private sector, joining Mead Johnson Nutrition (pediatric nutrition) as Senior Scientist in Global Regulatory and Nutrition Science for approximately two years.

Dr. El Khoury is a Registered Dietitian in Canada, and a Licensed Dietitian in Lebanon.

In addition to being a member of several journals’ editorial boards, she serves as a reviewer on national and international journals and committees including the prestigious CIHR Banting Postdoctoral Fellowship selection committee. Dr. El Khoury is also a consultant in scientific health affairs. Dr. El Khoury’s research interests have primarily focused on the role of functional ingredients/foods in the regulation of appetite, food intake, glycemia and metabolism in healthy individuals and individuals with nutrition-related disorders including overweight/obesity, hyperinsulinemia, and the metabolic syndrome. Another major research interest is sports nutrition.

At the University of Guelph, she is working on three lines of research:

  1. exploring novel biomarkers for the metabolic syndrome, and their modulation by functional foods and/or physical activity, both in pediatric and adult populations;
  2. investigating the prevalence and psychosocial determinants of dietary supplement use among university athlete and non-athlete students, gym exercisers and other populations at risk, and designing nutrition education programs to improve knowledge, attitude and awareness on dietary supplements in these populations; and
  3. assessing intake, knowledge and attitude with respect to global food trends such as the plant-based diet and the gluten-free diet.


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*Closed Captioning Notice: We offer Closed Captioning (CC) in select lectures, including translations into additional languages. Please note that these captions are generated by artificial intelligence and may contain inaccuracies or not fully convey the original meaning. While we strive for accuracy, we encourage users to approach the captions with an understanding of these potential limitations.

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