Puffery used in branding by the food and wellness industry and it’s effect on consumer attitude

Currently a lot of misinformation is floating around related to diets,superfoods,etc..The wellness industry has successfully marketed the ‘perfect’ body and ‘perfect’ lifestyle.I want to delve into the depths of how this has affected social attitude,how do consumers react to it..Knowing that a certain superfood alone is not going to give them the idealistic body they want,what prompts them to buy expensive stuff?