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The Nutrition Coalition (TNC) has worked to encourage that the U.S. Dietary Guidelines for Americans (DGA) be evidence based and inclusive of all Americans. With the ninth iteration of the DGA released today, TNC remains concerned that this highly influential policy document addresses only a minority of Americans, excluding the 60% of the population, according to the CDC, diagnosed with one or more diet-related chronic disease.
“This narrow scope fails to meet the Congressional statute that the DGA addresses the ‘general public.’ The general public is now ill, afflicted with chronic disease — and we have a national nutrition policy that ignores them,” stated Nina Teicholz, executive director of TNC.
“Nutrition recommendations that are taught to all Americans should necessarily reflect all Americans, and these Dietary Guidelines clearly fail to do that. The policy is scoped for disease-prevention only — thereby ignoring the 60% of the population now diagnosed with one or more diet-related disease, including heart disease, obesity, diabetes, etc. The expert committee did not review any of the body of science on how to successfully treat these diseases with nutrition — not even any studies on weight loss. For the U.S. Department of Agriculture (USDA) to develop a policy so narrowly focused on a minority of Americans makes little sense, especially since these Guidelines are applied to sick and well alike. These Guidelines can be of little-to-no use for the millions of Americans diagnosed with chronic, diet-related diseases.”
For 40 years now, the Dietary Guidelines have been more than just recommendations. They are arguably the single-most powerful lever influencing what Americans eat, a broadly influential policy that is considered the ‘gold standard,’ followed by most healthcare practitioners, K-12 educators, media outlets, and the military. The DGA also drives food choices for the $100 billion spent by the USDA on Nutrition Assistance Programs, for school lunches, feeding assistance for the elderly and women with infant children, food for disadvantaged communities, and more.
“The populations in these USDA programs have significantly higher rates of diet-related conditions, and yet the foods delivered to them are arguably inappropriate for their diseases. For instance, there is evidence to show that the Guidelines’ advice to eat 6 servings of grain per day (3 of them refined) and up to 10% of calories as sugar will do harm to someone with diabetes. The USDA should at least do no harm.” added Teicholz.
The Nutrition Coalition has been a leading voice in the debate around guidelines. TNC has called for increased transparency, a more rigorous scientific process for reviewing the science, and the need for the DGA to be applicable to all Americans, including minorities and those with obesity, diabetes as well as other metabolic diseases.
Despite calls for reform by more than 56 members of Congress, hundreds of doctors and tens of thousands of individuals, the new iteration of the guidelines continues to rely on outdated, weak science and exclude large bodies of scientific literature.
Science on saturated fats ignored
Among the science that was excluded by the 2020 DGA process was the last decade of studies on saturated fats. These have, on the whole, concluded that these fats have no effect on heart disease mortality. A group of leading U.S. scientists, including former members of the Dietary Guidelines Advisory Committee itself (and the chair of the 2005 committee) wrote letters to the secretaries of USDA and HHS as well as members of Congress, discussing how this science evolved. See a news report on these events in The BMJ.
Dr. Andrew Mente, associate professor of epidemiology and nutrition at McMaster’s University in Canada, a principal investigator of PURE, the world’s largest epidemiological study, member of the TNC Scientific Council, and one of the members in the group mentioned above, stated,
“Nutritional policies for populations must be backed by strong and consistent scientific evidence. To date, the collective data on saturated fat do not support existing recommendations of limiting intake to 10% of calories. In fact, the most recent data indicate that restricting saturated fat intake to low levels is not needed and may even be harmful. The lack of support for restrictions on saturated fat is not surprising, given that saturated fat is not consumed as a single isolated compound (i.e., unlike medications) but rather from foods like meats and dairy which also contain a multitude of other nutrients that the body needs including monounsaturated fat, quality protein, vitamin B, zinc, selenium, magnesium, and vitamin D. Instead, relaxing current restrictions on saturated fat intake but limiting intake of refined carbohydrates, added sugar, and ultra-processed foods is a better bet for improving the health of populations.”
Lack of transparency on financial conflicts of interest
Despite recommendations by the National Academies of Sciences, Engineering, and Medicine, in a 2017 report, that the members of the Dietary Guidelines Advisory Committee disclose all conflicts of interest, the USDA-HHS did not take up this recommendation. Therefore, the public remains largely unaware of the vast conflicts of interest on the committee. Its members include the:
- Current Medical Director, Nestlé’s OPTIFAST weight-loss program (Jamy Ard)
- Former Global Director of Scientific Affairs, Merck & Co. (Steve Heymsfield)
- Former Member, Scientific Advisory Board, ConAgra (Richard Mattes)
- President, The Danone Institute (funded by Dannon, the world’s largest yogurt company) (Barbara Schneeman, Chair of the 2020-2025 Dietary Guidelines Advisory Committee)
- Former Advisory Board Member, Monsanto (Barbara Schneeman)
Further, four of the six members of the “Birth-to-24″ Subcommittee had ties to the infant formula and/or baby food companies, according to our reporting.
“It is obviously worrisome that Big Food and Big Pharma should have potentially influenced the thinking of experts in charge of improving the nation’s diet via whole foods — not processed foods, medical drugs or devices,” said Teicholz.
Concern throughout the 2020 DGA process
There has been a growing body of concerns about the Dietary Guidelines expressed by a diversity of advocacy groups, as well as lawmakers and even member(s) of the Dietary Guidelines Advisory Committee (DGAC) itself who blew the whistle on the process. Expressions of concern include:
- A letter to USDA-HHS outlining a number of issues with the Guidelines from U.S. Representative Dusty Johnson, Ranking Member of the House agriculture subcommittee on Nutrition, Oversight, and Department Operations.
- An open letter signed by more than 300 Ph.D.’s, doctors and other healthcare practitioners was sent to the secretaries of USDA-HHS calling for a delay of the expert report by the DGAC, citing concerns with the review process.
- Two public comments, by the Academy of Nutrition and Dietetics, urging a delay of the guidelines over problems with the DGA process.
- A letter regarding the DGAC’s exclusion of virtually all studies on low-carbohydrate diets, by the Low-Carb Action Network, a group advocating to include a low-carb diet included as one viable dietary pattern in the DGA.
A letter to the USDA-HHS secretaries, detailed an extensive series of allegations by one or more member(s) of the DGAC who blew the whistle on the DGA process.
A summary of TNC’s concerns regarding the 2020 Guidelines process:
- The exclusion of virtually all clinical trials on weight loss.
- The exclusion of the last decade of science on saturated fats, which cumulatively shows that these fats have no effect on cardiovascular or total mortality.
- The exclusion of all the science on low-carbohydrate diets (>65 clinical trials).
- The continued use of an unverified and unrecognized methodology that has only brief, vague guidance on how various types of science are evaluated or graded–and is therefore not reproducible, which is a hallmark of good science.
- The rejection by USDA-HHS of the majority of recommendations made by the National Academies of Sciences, Engineering, and Medicine, to improve the transparency and upgrade the scientific rigor of the DGA process. These 2017 reports resulted from a Congressional mandate and cost taxpayers $1M. They also constituted the first-ever outside peer review of the DGA process since the policy’s launch in 1980.
- The lack of a requirement by USDA-HHS for disclosure, by any member of the DGAC, of their conflicts of interest, despite a recommendation by the National Academies of Sciences that these conflicts be disclosed and despite the fact that such disclosure is now standard in the field.
In public comments submitted to the USDA, TNC stated:
“Congress has mandated that the DGA be for the ‘general public,’ yet the DGA remains focused exclusively on disease prevention, for those Americans not yet diagnosed with a diet-related, chronic disease. This is not the general public. People with obesity, diabetes and other diet-related conditions are desperately in need of guidance. Two out of three American adults and one out of three children are overweight or have obesity, and more than half of adults have diabetes or prediabetes. Roughly half of adults also have high blood pressure, a major risk factor for heart disease and stroke. The estimate of the proportion of Americans who are healthy range from a high of 40%, who are those without a diagnosed metabolic disease, down to 12%, who are those without the symptoms of metabolic syndrome, an indicator of diet-related ill-health and chronic disease. Yet the DGA ignores these populations.”
Originally published by The Nutrition Coalition.