HUMAN NUTRITION

Detailed explanation-1: -Insoluble fiber does not dissolve in water and passes through the gastrointestinal tract relatively intact and, therefore, is not a source of calories.

Detailed explanation-2: -Fiber is a type of carbohydrate that the body can’t digest. Though most carbohydrates are broken down into sugar molecules called glucose, fiber cannot be broken down into sugar molecules, and instead it passes through the body undigested.

Detailed explanation-3: -While most carbohydrates, such as lactose or sugar, contain 4 calories per gram for the purposes of calculating calorie values, NDCs like those included in the definition of dietary fiber contain 2 calories per gram.

Detailed explanation-4: -Absorbs Calories Fiber swells in the stomach, absorbing calories and fat from other foods in the meal before the body can absorb them.