Search results: dietary guidelines

Lately, I have been asked repeatedly to explain just how the food industry exerts influence to protect and promote product sales.  This week’s posts address that question, starting with the usual Monday industry-funded study of the week, in this case an opinion piece sponsored by the potato industry.

Potato trade associations work hard to overcome concerns about this food’s rapidly absorbable starch content.

I received an email from the Alliance for Potato Research & Education telling me that if I don’t eat potatoes, I might become nutritionally deficient.

New publication alert: swapping out starchy vegetables may lead to unintended nutrition consequences.

A new perspective paper published in Frontiers in Nutrition underscores starchy vegetables are more than just carbs – they’re a vital vehicle for essential nutrients. Yet, as confusion around “good versus bad carbs” persists among consumers, there is a risk of starchy vegetable avoidance in favor of other carbohydrate foods perceived as equally or more nutritious – or even carbohydrate avoidance all together.

The press release cited a paper with this conclusion:

Replacing starchy vegetables with grain-based alternatives, including whole-grain foods, for one day led to a 21% decrease in potassium, a 17% decrease in vitamin B6, an 11% drop in vitamin C and a 10% reduction in fiber.

This called for a look at the actual paper.

The paper: Carbohydrate confusion and dietary patterns: unintended public health consequences of “food swapping.”   Ayoob, K.  Front. Nutr., 28 September 2023. Volume 10 – 2023 |

Rationale: “Nutrient-dense dietary patterns include both grain foods and starchy vegetables. These food groups are currently considered separately [by the Dietary Guidelines for Americana], and they must remain separate to ensure people are encouraged to consume complementary nutrients from each of these food groups.”

Conclusion: “Using complex carbohydrate foods, specifically starchy vegetables (e.g., potatoes) and grains, interchangeably is at best, not a useful strategy, but at worst, may increase the risk of micronutrient inadequacy and/or dietary imbalances.”

Funding: “The author(s) declare financial support was received for the research, authorship, and/or publication of this article. Funding for this perspective was provided by Potatoes USA.”

Conflict of interest: “This study received funding from Potatoes USA. The funder had the following involvement with the study: composition and data analysis of the menu modeling. KA was compensated by Potatoes USA for preparation and revision of the manuscript.  The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision.”

Comment: I like potatoes, think they have nutritional value (especially when baked rather than fried), and do not view them as poison.  But: this paper is an opinion piece commissioned, developed, and paid for by a potato trade association.  And sent to me in a press release.

I received this email from USDA’s MyPlate group:

Hi Marion

MyPlate National Strategic Partners, a group developed by the United States Department of Agriculture (USDA), just announced the launch of a new resource to help Americans build healthier sandwiches! The full press release is below, and I am happy to answer any questions or arrange any interviews!

WASHINGTON, D.C. – January 11, 2024 – As MyPlate National Strategic Partners, the Grain Foods Foundation, Hass Avocado Board, National Association of State Departments of Agriculture Foundation and National Wheat Foundation are excited to introduce a new resource aimed at helping individuals build healthier and more nutritious sandwiches.

Every day, nearly half of all Americans enjoy a sandwich – and most people are not meeting recommendations of the Dietary Guidelines for Americans.[1] The new “Build a Better Sandwich” resource features practical tips to help bridge this gap, with realistic and inspiring ideas for enjoying a variety of grains, lean proteins and fiber-filled fruits and vegetables and low-fat dairy in better-built sandwiches…To download the “Build a Better Sandwich” resource and other materials created by MyPlate National Strategic Partners, please visit https://www.myplate.gov/partner-resources.

[1] Sebastian et al. Sandwich consumption by adults in the U.S.: What We Eat In America, NHANES 2009-2012. Food Surveys Research Group Dietary Data Brief No. 14. Dec 2015.

Given the sponsors, want to take a guess at how you are supposed to make these sandwiches?

I’m all for healthier sandwiches and eating avocados (love them!), but this is an example of the Hass Avocado Board—a USDA-sponsored checkoff (marketing and promotion) program—at work.

Don’t you think it’s odd that the USDA’s doesn’t include a broader range of vegetables or plant foods in its sandwich advice?

This is one of the many things wrong with USDA sponsorship of checkoff programs….

The USDA has just announced Investments to Strengthen U.S. Specialty Crops Sector.

The launch of the Assisting Specialty Crop Exports (ASCE) initiative will provide $65 million for projects that will help the specialty crop sector increase global exports and expand to new markets. Additionally, today USDA is announcing $72.9 million in grant funding available to support the specialty crops industry through the Specialty Crop Block Grant Program. The Specialty Crop Block Grant Program (SCBGP) will fund innovative projects designed to bolster the competitiveness of the expanding specialty crop sector. Specialty crop exports totaled $24.6 billion in FY2023, representing 13.8 percent of total U.S. agricultural exports.

“Specialty crops” is USDA-speak for fruits, vegetables, nuts, and grains—the food plants everyone, including the USDA, recommends for health.

The USDA co-sponsored Dietary Guidelines say:

A healthy dietary pattern consists of nutrient-dense forms of foods and beverages across all food groups, in recommended amounts, and within calorie limits. The core elements that make up a healthy dietary pattern include:

• Vegetables of all types—dark green; red and orange; beans, peas, and lentils; starchy; and other vegetables

• Fruits, especially whole fruit

• Grains, at least half of which are whole grain

The USDA, however, defines “Specialty” crops as

Fruits and vegetables, tree nuts, dried fruits, horticulture, and nursery crops (including floriculture).

It lumps edible foods, herbs, and spices together with inedible annual and perennial bedding plants, potted house plants,  cut flowers, and Christmas trees, among others.  So the new money supports export of all of them, not just food.

The money—$65 million—is hardly a rounding error compared to the billions spent on support of commodity crops like corn and soybeans.

Commodity crops go for food for animals and fuel for automobiles; only a tiny fraction goes for food for people.

Despite the Dietary Guidelines, the USDA support of food for people is minimal.  Hence, “Specialty.”

We need the USDA to refocus its priorities on food for people and environmental sustainability.

Hey—I can dream.

On Thursdays I like posting things I want everyone to enjoy.

This one, I stole from Tamar Haspel, who writes about food for the Washington Post.

I follow her on X (the site formerly known as Twitter), where she recently posted:

This could be my all-time favorite BMI correlation!

In China and post-Soviet states, BMI correlates with corruption. The fatter, the crookeder.

The correlation she cites is from an article in the Economist, Are Overweight Politicians Less Trustworthy?

I agree.  This is a fabulous example of how correlation does NOT mean causation—a basic tenet of epidemiology often forgotten.

But here’s my personal favorite example.  I laugh every time I see it.

No, the Dietary Guidelines did not cause the prevalence of obesity to rise.

This is correlation, NOT causation.

For causes, please consider food overproduction, pressures on food companies to sell food when there is so much of it, and the shareholder value movement, which demands not only profits, but  continual growth in profits.  All of these forced food companies to find new ways to get everyone to eat more food (by creating an “eat more” food environment.  I discuss all this in Food Politics and my other books).

Correlation is lots of fun but causation requires much deeper analyses.

Sorry about that.

Thanks Tamar.

Just because all of the major nutrition professional organizations partner with food companies, does not make it a good idea.  If nothing else, partnerships with food companies raise reputational risks.  They give the appearance of conflicted interests, as David Ludwig and I warned in 2008.  I have also written about the hazards of food industry sponsorship of professional organizations in Food Politics, Soda Politics, and Unsavory Truth.  Here’s what they are doing now.

Academy of Nutrition and Dietetics (AND, formerly the American Dietetic Association)  OOPS.  My error.  This should be the American Diabetes Association (even worse).  Abject apologies.  This is what I get for not reading more carefully.  Apologies again.

If I seem to be picking on AND, it’s because it is bigger and gets into more trouble than other nutrition professional societies.

The latest example: According to Reuters, a former AND officer, Elizabeth Hanna, has sued the organzation for “firing her for objecting to what she called a “pay to play” scheme to promote the no-calorie sweetener Splenda.

In its 2022 annual report, the ADA said Splenda was one of a group of “elite” supporters that had given more than $1 million, along with Bayer Healthcare, Blue Cross Blue Shield of Illinois, Helmsley Charitable Trust and others.

On its website, Splenda publishes “diabetes-friendly recipes,” endorsed by the ADA. Hanna, a registered dietitian nutritionist, said she refused to approve the endorsement of several of these recipes in July.

…The U.S. Centers for Disease Control and Prevention states on its website that some studies have found possible health risks associated with the sweeteners, but that more research is needed.

American Society for Nutrition (ASN)

I am a member of this society and raise objections every time I get something like this in my e-mail.

Sponsored Webinar: Oral Health and Nutrition: Imperative for Healthy People 2030 and US Dietary Guidelines   Sponsored By: Mars Wrigley and the Oral Health Alliance.  The 2020-2025 Dietary Guidelines (DGA) identified dental caries as a major diet-related chronic disease of public health concern….

Doing this sort of thing risks reputation.

Evidence:  In a video on ultra-processed foods, the Financial Times identifies the ASN as “food industry advocacy group.”

The ASN’s executive director assures me they will ask for a correction.

Society for Nutrition Education and Behavior

Et tu?

It just announced a webinar, “Latinos love affair with Mangos: Maintaining Generational Food Traditions to Improve Health Outcomes.”

This is “a webinar sponsored by the National Mango Board, SNEB Organizational Member.”

The mango is…one of the world’s most popular fruits, and a staple food across Spanish speaking countries of North America, South America, and the Caribbean. Beyond its culinary popularity, an expanding body of research shows associations with mangos and risk reductions for inflammation and metabolically- based chronic disease, many of which disproportionately impact Hispanic American populations.

Mangos as opposed to any other fruit?

I am also a member of this society.

Overall comment

Are the reputational risks—and the loss of integrity—worth the money?  I don’t think so.

I frequently get sent copies of e-mailed messages sent to members of the Academy of Nutrition and Dietetics, the professional organization for people holding credentials as Registered Dietitian Nutritionists (RDN).

Disclosure: I do not hold this credential; long after I had a doctorate while I was doing a later master’s in public health, I fulfilled all of the graduate and clinical requirements but was still short one undergraduate course.

Holders of the RDN must complete 75 credits of continuing education courses every five years to maintain the credential.  Usually, dietitians must pay for courses to meet those credits.

But as my correspondents make clear, food complanies offer courses for credit—at no cost.

It is not at all difficult to fully meet credit requirements through industry-sponsored courses.

Here are some examples:

• International STEVIA Council.  Stevia: The Science Beehind the Sweet: a complimentary webinar that will review the most recent scientific evidence supporting the use of stevia to help reduce the risk of chronic diseases and improve quality of life.  https://www.todaysdietitian.com/marketing/webinars/2023/ISC/index.html
• This…Free CPEUs: Webinar on Dietary Diversity: Join PepsiCo Health & Nutrition Sciences on Thursday, December 7th for the latest research on incorporating more diverse foods, such as whole grains, legumes and other under-consumed food groups, in dietary patterns. This webinar will also feature a fun culinary demo! Earn 1.25 free CPEUs. Register now.
• The Latest on Low- and No-Calorie Sweeteners: What You Need to Know. This activity is accredited by Heartland Food Products Group. 1.0 CPEU FREE
• Looking for more free CPE opportunities?  IFIC has 20+ hours of CPEUs available here  [NOTE: IFIC, the International Food Information Council, is a food industry trade association focused on education].

Comment: One can only imagine what those sessions will say.  Do not expect anything critical about the sponsor’s products.

But here’s an even easier way to pick up a bunch of credits.

Free CPE Opportunities are Now Available for Reading the Dietary Guidelines for Americans!  A Special Treat for Professionals: Free CPE Units Available Now for Reading the Dietary Guidelines for Americans.

You can now earn 2.0 free continuing professional education (CPE) credits for reading the Introduction and Chapter 1 of the Dietary Guidelines for Americans, 2020-2025! Credits are provided by the Commission on Dietetic Registration (CDR), the credentialing body for Registered Dietitians and Dietetic Technicians, Registered.

The self-study module will equip professionals with knowledge of the scientific underpinnings that makes the Dietary Guidelines relevant across all life stages. Participants will also learn science-based advice on what to eat and drink to build a healthy diet that can promote health, help prevent diet-related chronic disease, and meet nutrient needs.

Visit CPE Opportunities | Dietary Guidelines for Americans to start earning credits and stay updated on the release of future modules.

Comment:  Let’s hope that dietitians have already read the Dietary Guidelines at some point.  Or maybe it takes free credits to get anyone to slog through its 150 pages.

In any case, AND should not be allowing food companies to “educate” dietitians.

Just to be fair: the society to which I belong, the American Society of Nutrition, is doing this.  It too should not.

José Tenorio.  School Food Politics in Mexico: The Corporatization of Obesity and Healthy Eating Policies.  Routledge, 2023.  

I was asked for a blurb for this one:

From first-hand observations and deep research, José Tenorio makes it clear that school food in Mexico is about much more than feeding hungry kids; it’s about how food corporations have taken advantage of social inequalities to replace native food traditions with less healthful but profitable products.  School food politics, indeed!

This book may seem specialized, but it is a useful case study in the politics of school food—not confined to the United States, apparently.

Mexico leads the way in efforts to promote healthier diets.  It has  excellent dietary guidelines.   It also has warning labels on food products (see my post on these), soda taxes, a ban on trans fats, and other measures.

Mexico’s schools do not provide meals for kids in schools.  They sell foods at canteens.

The country set nutrition standards for foods sold in schools in 2011, but compliance is not great.

Public health and food advocacy groups support laws to ban unhealthy foods and drinks from schools.  Despite formidible industry opposition, this may actually happen.

This book provides evidence for why it should.

Thanks to a reader, Kevin Mitchell, for sending this news item: Animal vs. Plant Protein: New Research Suggests That These Protein Sources Are Not Nutritionally Equivalent.

Scientists found that two-ounce-equivalents (oz-eq) of animal-based protein foods provide greater essential amino acids (EAA) bioavailability than the same quantity of plant-based protein foods. The study challenges the Dietary Guidelines for Americans (DGAs) which suggest these protein sources are nutritionally equivalent.

I went right to the source.

• The study: Connolly G, Hudson JL, Bergia RE, Davis EM, Hartman AS, Zhu W, Carroll CC, Campbell WW. Effects of Consuming Ounce-Equivalent Portions of Animal- vs. Plant-Based Protein Foods, as Defined by the Dietary Guidelines for Americans on Essential Amino Acids Bioavailability in Young and Older Adults: Two Cross-Over Randomized Controlled Trials. Nutrients. 2023; 15(13):2870. https://doi.org/10.3390/nu15132870
• Objectives: We assessed the effects of consuming two oz-eq portions of pork, eggs, black beans, and almonds on postprandial EAA bioavailability in young and older adults.
• Methods: We conducted two investigator-blinded, randomized crossover trials in young (n = 30; mean age ± SD: 26.0 ± 4.9 y) and older adults (n = 25; mean age ± SD: 64.2 ± 6.6 y). Participants completed four testing sessions where they consumed a standardized meal with two oz-eq of either unprocessed lean pork, whole eggs, black beans, or sliced almonds.
• Conclusions: Pork resulted in greater EAA bioavailability than eggs in young adults (p < 0.0001), older adults (p = 0.0007), and combined (p < 0.0001)… The same “oz-eq” portions of animal- and plant-based protein foods do not provide equivalent EAA content and postprandial bioavailability for protein anabolism in young and older adults.
•  Funding: This research was funded by the Pork Checkoff and the American Egg Board—Egg Nutrition Center. The supporting sources had no role in study design; collection, analysis, and interpretation of data; writing of the report; or submission of the report for publication.
• Conflicts of Interest: When this research was conducted, W.W.C. received research funding from the following organizations: American Egg Board’s Egg Nutrition Center, Beef Checkoff, Pork Checkoff, North Dakota Beef Commission, Barilla Group, Mushroom Council, and the National Chicken Council. C.C.C. received funding from the Beef Checkoff. R.E.B. is currently employed by Archer-Daniels-Midland (ADM); the research presented in this article was conducted in a former role and has no connection with ADM. G.C., J.L.H., E.M.D., A.S.H. and W.Z. declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.

Comment: It is very much in the interest of the Pork Checkoff and the Egg Board t,o demonstrate that animal-source food protein is better for you than proteins from plant sources—and to cast doubt on any evidence to the contrary.  Proteins, whether from animal or plant sources, contain precisely the same 20 amino acids, although in different proportions.  Animal proteins are closer in amino acid composition than are plant proteins but if you eat a variety of plant foods you will get the amino acids you need.   People who eat largely plant-based diets are generally healthier than people who eat a lot of animal-based foods.  The conclusion of this study does not change that overall conclusion.  This, then, is another industry-funded study with predictable results.