We're hardwired to like sweet things. You don't have to teach a baby to like sugar. All babies like sugar because sugar is high calorie. Same for fat. When the world is starving, again, most of human history, more calories are better. That would not be advice that your prehistoric ancestor, a Paleolithic doctor, if there were such a thing, would say,. get as many calories as you can get his hands on.
Is your favorite treat changing your brain? Why do so many snacks melt in your mouth? And why can’t Stephen replicate his favorite salad dressing?
Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/