There are currently three macronutrients recognized within the field of dietetics due to their gram quantity intake and requirement for human health; this includes proteins, fats, and carbohydrates. Dietary Fiber, however, is not considered to be an independent macronutrient despite its gram quantity intake and requirement for human health. Additionally, Dietary Fiber is a net-zero energy yielding nutrient unlike other carbohydrates. Although Dietary Fiber should remain chemically categorized as a carbohydrate, for the purposes of dietetic prescription and education, Dietary Fiber should be redefined as the fourth macronutrient. This definition shift would illustrate both the importance and complexity of this macronutrient and may yield an increase in Dietary Fiber consumption and relevant research.
"Evidence for Redefining Dietary Fiber,"
Undergraduate Research: Vol. 3:
1, Article 3.
Available at: https://kb.gcsu.edu/undergraduateresearch/vol3/iss1/3