The document discusses how the rise of obesity in the US is linked to changes in dietary recommendations and food industry practices over several decades. It notes that: - The 1977 McGovern report originally warned against saturated fat and sugar but was revised under food industry pressure. - In the 1980s, the food industry marketed "low fat" foods high in added sugar, fueling demand for sweet foods and contributing to weight gain. - Choice architecture and defaults influence what people choose, benefiting some interests over public health. Nudges like placement can guide choices without restricting them.