When I went back and reread some of Pollan’s and Schlosser’s work, I discovered that they never actually said that replacing high-fructose corn syrup with sugar (as Hunt’s brand ketchup recently did in response to consumer demand) would solve the obesity problem. The problem with HFCS is more about the ubiquity of highly sweetened products as a whole. The corn crop is subsidized by the U.S. government, making HFCS much cheaper than sugar. This makes it easy for companies to produce extremely cheap, extremely unhealthy junk food, which then becomes the cheapest and easiest source of calories for people on a budget. This is why, in many underprivileged neighborhoods, you’ll find a glut of fast-food restaurants and bodegas selling processed snacks, but a dearth of (more expensive) fresh produce.