[carlmr]

We could do randomized controlled studies, where we first have a phase where everybody just eats what they eats, we record caloric intake and nutrition profiles of the food they eat. To be sure that price is not a factor we pay for all the food.

Then in phase 2 we split into a control group that still buys from any store, a second group that only has access to foods with high nutrition content, and a third group that only has access to foods with low nutrition content. The same types of food should be offered just high and low nutrition options (e.g. zuchinnis, brocolli, tomatoes, apples, ...)

We then check if there's any significant effect on caloric intake (given a certain time for them to adjust).