Net carbohydrates can be calculated from a food source by subtracting fiber and sugar alcohols(which are shown to have a smaller effect on blood sugar levels) fromtotal carbohydrates.

Whole grain foods are a source of dietary carbohydrates, micronutrients and phytochemicals.

Food is composed of carbohydrates, lipids and proteins and the major resources are derived from animal, plant, fungi, algae, and even microbials.