Two weeks ago, I spoke at the 6th Ottawa 6th International Public Nutrition Conference. I was a member of a group of speakers who spoke about it how it may not be published yet New Canada Food Guide.
I was impressed both during the interviews of other presenters and during the question and answer period about how people were concentrated about how the Food Guide would be used by people.
In my opinion, as a direct tool, it will not be enough. This does not mean that it can or will not have an impact on Canadian dietary patterns (it will have its impact on politics), nor that someone who took it could not choose to follow it, but rather speaks to the simple fact that only education does not seem to be enough to change behavior. Because again and again we learn that education, even when linked to terrible events such as heart attacks, does not seem to be able to lead people to constant changes in lifestyle or genetic knowledge of specific disease risks.
The reasons why they are likely myriads, but probably boil in a combination of normal human nature and change that is difficult along with the impact of a man's food environment and social determinants of health.
For example on food, take this recent article on perceptions about fast food consumption. In this, among many other statistics, the authors note that 73% of the weekly fast food consumers reported believing that fast food was not good for them.
When it comes to changing behavior, only knowledge does not seem to be particularly strongly associated with power.