I also read an interesting book lately called "The Dorito Effect" in which the author makes the case that we have a finely developed ability to associate the flavour of food with the nutrients we get from it (and, when we need nutrients, we'll crave the foods that offer it), but, 1) food's flavour and nutritional value has become diluted as we've bread for larger yields, and 2) we add synthetic flavourings to everything, messing with the ability to crave and eat the foods we need.
I saw a fascinating pre-print paper here a while ago: A Contamination Theory of the Obesity Epidemic. via: https://news.ycombinator.com/item?id=27936016
I also read an interesting book lately called "The Dorito Effect" in which the author makes the case that we have a finely developed ability to associate the flavour of food with the nutrients we get from it (and, when we need nutrients, we'll crave the foods that offer it), but, 1) food's flavour and nutritional value has become diluted as we've bread for larger yields, and 2) we add synthetic flavourings to everything, messing with the ability to crave and eat the foods we need.