One of the major reasons why carbohydrates play a major role in nutrition is because they:

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Carbohydrates provide a staple part of the food supply throughout the world. Foods such as rice, pasta, bread, and potatoes provide an affordable and abundant source of energy. The preferred source of carbohydrate in any area depends on climate, culture, and economics. Carbohydrates are absorbed in the small intestine, not the stomach. Starch-based and whole grain carbohydrate foods often provide vitamins and minerals, but refined foods and those high in sugar may not. Some carbohydrate foods can be eaten without special preparation (e.g., bread or crackers), but others require cooking (e.g., potatoes, rice, and pasta).

One of the Major Reasons Why Carbohydrates Play a Major