In the past three decades, have carbohydrates in this country comprised a larger % of our caloric intake?

Yes thats true: The worst carb are the sugar rich sodas which have been promoted by the soda industry and the fruit juices.The creals fortified with sugars are another cause.There is incresed consumption of processed food.This is all at home when people eat out thats a different story, there sky is the limit in calorie and carb intake especially for children. The result is obesity, diabetese, hypertension, heart dis.