We gathered data from the scientific and grey literature and from Canadian actors involved in addressing obesity to document the effectiveness of nutrition-labelling policies, as well as their unintended effects, equity, cost, feasibility, and acceptability. Presented here is a broad outline of the results.
The nutrition-labelling policies studied target pre-packaged foods or restaurant menus, and require them to display nutrition information either in a detailed format (Nutrition Facts table) or a simplified format (logos). These policies may make labelling mandatory or leave it optional but subject to guidelines with which companies must comply if they choose to display nutrition information on their products.
The intervention logic of labelling policies assumes that nutrition information will be read, that it will be understood, and that it will lead to healthier diets, both in terms of quantity and quality, which will help prevent obesity.
In practice, th…