The term "dietitian" is protected by law across Canada, which means that only individuals who meet specific educational qualifications, criteria, and standards can use this title. The term "Nutritionist" may or may not be protected, depending on the province. Provinces like Alberta, Quebec, and Nova Scotia have protected this title by law, meaning that nutritionists in these provinces have met the same criteria and standards as dietitians.
In other provinces, the title "Nutritionist" is not protected by law. Titles such as Registered Holistic Nutritionists (RHN), Certified Nutritional Practitioners (CNP), Registered Nutritional Consulting Practitioner (RNCP), Registered Nutritional Therapist (RNT), National Nutrition Clinical Practitioner (NNCP) and more, are often used by nutrition providers who might have completed privately-owned training programs that are not accredited. As a result, individuals using these titles may not be regulated health professionals.
For the best nutrition advice and information, look for a qualified and experienced professional. You can contact your province's dietetic regulatory body to ensure you receive services from a qualified dietitian.
For more information, read the full Dietitians of Canada article on Dietitians and Nutritionists.