Does calorie intake go down? If not it must be just a shift. I can come up with three: - shift to non-perishables (more grain, less fresh vegetables, more dep

Does calorie intake go down? If not it must be just a shift. I can come up with three: - shift to non-perishables (more grain, less fresh vegetables, more depletion of frozen stock) - more efficient use at home (not throwing away leftovers at the restaurants and bakeries) - a general shift towards different ingredients (who uses corn flour, who makes their own latte, maybe fewer cook veggies at home)