New Study Shows Deception of Whole Grain Food Labels

January 14, 2013 | By | Reply More

Natasha Longo, Prevent Disease
Waking Times

Barley, spelt, millet, and quinoa are just a few examples of healthier whole grains. However, the food industry is inconsistently classifying foods as “whole grain” and, in many cases, misleading consumers according to a new study by Harvard School of Public Health (HSPH) researchers.

One of the most widely used industry standards, the Whole Grain Stamp, actually identifies grain products that are higher in both sugars and calories than products without the Stamp. The researchers urge adoption of a consistent, evidence-based standard for labeling whole grain foods to help consumers and organizations make healthy choices. This is the first study to empirically evaluate the healthfulness of whole grain foods based on five commonly used industry and government definitions.

“Given the significant prevalence of refined grains, starches, and sugars in modern diets, identifying a unified criterion to identify higher quality carbohydrates is a key priority in public health,” said first author Rebecca Mozaffarian, project manager in the Department of Social and Behavioral Sciences at HSPH.

The study appears in the January 4, 2013 advanced online edition of Public Health Nutrition.

The health benefits of switching from refined to whole grain foods are well established, including lower risk of cardiovascular disease, weight gain, and type 2 diabetes. However, consumers need to be aware that all whole grains are not created equal. For example, common whole grain products include whole wheat foods which at least half the population has trouble digesting with a high percentage experiencing intolerance. There are now as many health risks associated with the consumption of wheat as there are nutritional benefits claimed by the wheat industry.

Just take a look at the products on the shelves of your local grocery store. There is a healthy multigrain substitute for everything – be it bread, noodles, biscuits or chips. Most brands are exploiting the multigrain craze that has caught the fancy of people of late. However, are they really healthy as these companies claim?

The U.S. Department of Agriculture’s (USDA) 2010 Dietary Guidelines recommend that Americans consume at least three servings of whole grain products daily, however there is no emphasis on exactly which whole grains to incorporate. No single standard exists for defining any product as a “whole grain” which leave consumers in the dark on the dangers of many whole grain foods including maize ans wheat.

Mozaffarian and her colleagues assessed five different industry and government guidelines for whole grain products:

  • The Whole Grain Stamp, a packaging symbol for products containing at least 8 grams of whole grains per serving (created by the Whole Grain Council, a non-governmental organization supported by industry dues)
  • Any whole grain as the first listed ingredient (recommended by the USDA’s MyPlate and the Food and Drug Administration’s Consumer Health Information guide)
  • Any whole grain as the first ingredient without added sugars in the first three ingredients (also recommended by USDA’s MyPlate)
  • The word “whole” before any grain anywhere in the ingredient list (recommended by USDA’s Dietary Guidelines for Americans 2010)
  • The “10:1 ratio,” a ratio of total carbohydrate to fiber of less than 10 to 1, which is approximately the ratio of carbohydrate to fiber in whole wheat flour (recommended by the American Heart Association’s 2020 Goals)

From two major U.S. grocers, the researchers identified a total of 545 grain products in eight categories: breads, bagels, English muffins, cereals, crackers, cereal bars, granola bars, and chips. They collected nutrition content, ingredient lists, and the presence or absence of the Whole Grain Stamp on product packages from all of these products.

Out of the 545 grain products, more than 90% were heavily processed and refined.

“Waist circumference was very much associated with this high-refined grains pattern,” said Katherine Tucker, an associate professor of nutritional epidemiology at Tufts University in Boston. She and other scientists are studying what happens to the bodies of people who eat lots of refined bread regardless of whole-grain status.

They found that grain products with the Whole Grain Stamp, one of the most widely-used front-of-package symbols, were higher in fiber and lower in trans fats, but also contained significantly more sugar and calories compared to products without the Stamp. The three USDA recommended criteria also had mixed performance for identifying healthier grain products. Overall, the American Heart Association’s standard (a ratio of total carbohydrate to fiber of less than or equal to 10:1) proved to be the best indicator of overall healthfulness. Products meeting this ratio were higher in fiber and lower in trans fats, sugar, and sodium, without higher calories than products that did not meet the ratio.

“Our results will help inform national discussions about product labeling, school lunch programs, and guidance for consumers and organizations in their attempts to select whole grain products,” said senior author Steven Gortmaker, professor of the practice of health sociology.

About the Author

Natasha Longo has a master’s degree in nutrition and is a certified fitness and nutritional counselor. She has consulted on public health policy and procurement in Canada, Australia, Spain, Ireland, England and Germany.

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