If one decides that they are going to eat these things not just because they are good for them... If one takes the perception or adopts the perception that they are both good for you and that, in being good for you, they are good for your brain metabolism and that you desire to be healthy, as crazy as it sounds, those subjective signals of what you tell yourself about the foods that you're eating can actually impact how those foods will taste—maybe not immediately, but eventually— and can impact the way in which your body utilizes those foods.