> If we do not spend the the energy to hunt what we eat, it seems clear that we get obese. > Our natural instincts tell us to eat as much as we can whenever foo

> If we do not spend the the energy to hunt what we eat, it seems clear that we get obese. > Our natural instincts tell us to eat as much as we can whenever food is available. Compounding the problem, we've identified what activates these instincts (fat and sugar), and hyper-optimized food to target the reward centers and cause people to eat _even more_ food that they don't need. Then we use what we've learned about psychology to trigger people's desire for food even when they're not eating. Then we invent expensive drugs (see TFA) to help people lose the weight (and throw commercials at them for _those_)...