The food industry responded to what people demanded after the US Government deceived them about the role of fat in heart disease - which is either minimal or none.
People cut out the fat like the government told them was necessary, and so the food industry added sugar so the food had some taste. And our carb-driven binges exploded like our waistlines!
It would be interesting to see side-by-side graphs showing the increase in consumption of low-fat foods prompted by the Government's anti-fat crusade and the increase in Type 2 diabetes.