Nutrient density
ByFrom the American Journal of Clinical Nutrition (October 2005):
“The American diet is said to be increasingly energy-rich but nutrient-poor. To help improve the nutrient-to-energy ratio, the 2005 Dietary Guidelines for Americans recommend that consumers replace some foods in their diets with more nutrient-dense options. Such dietary guidance presupposes the existence of a nutrient density standard. However, a review of the literature shows that the concept of a nutritious food is not based on any consistent standards or criteria. In many cases, healthful foods are defined by the absence of problematic ingredients-fat, sugar, and sodium-rather than by the presence of any beneficial nutrients they might contain. Past attempts to quantify the nutrient density of foods have been based on a variety of calories-to-nutrient scores, nutrients-per-calorie indexes, and nutrient-to-nutrient ratios. The naturally nutrient rich (NNR) score, which is based on mean percentage daily values (DVs) for 14 nutrients in 2000 kcal food, can be used to assign nutrient density values to foods within and across food groups. Use of the NNR score allows consumers to identify and select nutrient-dense foods while permitting some flexibility where the discretionary calories are concerned. This approach has implications for food labeling, nutritional policy making, and consumer education. The Food and Drug Administration has considered approving nutrient claims based on the ratio of a beneficial nutrient to the food’s energy content, as opposed to a specified minimum amount of a nutrient per serving size. Given the current dietary trends, the nutrient density approach can be a valuable tool for nutrition education and dietary guidance.”
In the future, a formal and accepted measure of nutrient density per calorie will really help in planning for an optimal diet. The question is will be whether the diet/food industry would be supportive of such a concept — given the adverse economic impact such disclosure might result in. If structured correctly, a nutrient density score would expose the nutritional problems behind most processed “foods” in the market today.
In designing an optimal healthy weight loss program, the concept of nutrient density is the most important factor. Dr. Joel Fuhrman has developed a practical method of rating nutrient density. I will share this in the next post…
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