by Marion Nestle

Search results: superfood

Dec 18 2019

The latest in superfoods: camel’s milk?

Really?  Camel’s milk?  I am indebted to DairyReporter.com for a review of research on the health benefits of camel’s milk.

According to this overview, camel’s milk can

  • Prevent colorectal cancer
  • Reduce cellular inflammation due to diabetes
  • Cures autism
  • Enhances immunity
  • Cures hepatitis
  • Prevents food allergies

A miracle food?

Alas, the article explains, most of these studies were performed in mice or published in journals unlikely to be rigorously peer reviewed.

What can I tell you about the nutritional quality of camel’s milk?

Unfortunately, the USDA’s food composition data base does not have an entry for camel’s milk.  What looks like a reasonable review of the nutritional value of camel’s milk (which you can download from this site) suggests that there are differences in nutrient composition between cow’s and camel’s milks, but the differences are small.  Because the proteins differ, people sensitive or allergic to cow’s milk will have an easier time consuming camel’s milk.

The big issue with camel’s milk in the United States is that it is not pasteurized.  Raw milk carries a greater food safety risk than pasteurized milk.

The FDA also has issued a warning against unproven claims that camel milk prevents autism.

I’m not seeing any particular health benefits from drinking camel milk other than avoiding allergic reactions to cow’s milk.

If you insist on drinking it, make sure it comes from a producer who diligently tests it for pathogens.

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Aug 1 2007

Scientifically engineered “superfoods”

Eating Liberally is now interviewing me on a regular basis in a post called “Let’s Ask Marion.” Today’s question is about foods created by technologists to introduce some health benefit–what I like to call “techno-foods.” It is timely because today’s New York Times has a report by Andrew Martin of his visit to the recent convention of the Institute of Food Technology. Are these foods really designed to make you healthy? Or are they about the financial health of their makers?

May 30 2024

What’s new in food tech? A few that caught my fancy

I’m a food technology skeptic but I do enjoy keeping an eye on what food scientists and innovators are coming up with.  Just what we need!

May 28 2024

Industry-funded study of the week: Almonds again

It’s been a couple of years since I’m commented on almond-industry research funding, but it remains hard at work.  Sasha Matera-Vatnick sent me a report of this study from Food Technology.  It essentially reproduced the California Almonds’ press release: New Research: Eating Almonds Can Aid in Post-Exercise Recovery.

The study: Witard, O., Siegel, L., Rooney, J., Marjoram, L., Mason, L., Bowles, E., Valente, T., Keulen, V., Helander, C., Rayo, V., Hong, M. Y., Liu, C., Hooshmand, S., & Kern, M. Chronic almond nut snacking alleviates perceived muscle soreness following downhill running but does not improve indices of cardiometabolic health in mildly overweight, middle-aged, adultsFrontiers in Nutrition. 2024 January 8: doi: https://doi.org/10.3389/fnut.2023.1298868

Method: 25 mildly overweight subject used a treadmill for 30 min after 8-weeks of consuming either 57 g/day of whole almonds (ALMOND) or an isocaloric amount (86 g/day) of unsalted pretzels (CONTROL).

Results: muscle soreness measured during a physical task (vertical jump) was reduced by ~24% in ALMOND vs. CONTROL . No pre-post intervention changes in assessments of cardiometabolic health, body composition, mood state or appetite were observed in ALMOND or CONTROL (all p > 0.05).

Conclusion: “Chronic almond supplementation alleviates task-specific perceived feelings of muscle soreness during acute recovery from muscle damaging exercise, resulting in the better maintenance of muscle functional capacity. These data suggest that almonds represent a functional food snack to improve exercise tolerance in mildly overweight, middle-aged adults.”

Funding: “The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This work was supported by Almond Board of California, Modesto, CA. The funder had no role in the study design, data collection, analysis and interpretation, or the preparation of the manuscript.”

Comment:  The promised mechanism of action has to do with inflammation, claimed here to be reduced by eating almonds (or pistachios in these authors’ previous studies).  Despite the detailed science here, this seems like wishful thinking.  I like nuts but what about everything else we eat?  This is a one-food study, and it defies credulity to think a handful of nuts could have signfiicant physiological effects on their own.  Whatever.  The Almond Board paid the authors to do the study and the results and interpretation were predictable from this alone.  If you believe almonds are a superfood, maybe you won’t mind the amounts of water they require.  To which, by the way, the Almond Board says other foods use more.

May 13 2024

Food-industry press release of the week: peanuts

I received an e-mailed press release from The Peanut Institute: Peanuts and Peanut Butter Support Women’s Health.

When it comes to health, women face unique challenges that call for unique nutrition. In fact, research has found that women face a higher risk of dying from heart disease than men,1 and may be at risk for other conditions such as hypertension,2 certain cancers,3 and even Alzheimer’s disease.4  To help women protect their health, The Peanut Institute is sharing information on the benefits that regular consumption of peanuts and peanut butter delivers to females at every stage of life.

Here are excerpts from those stages.

  • Birth to 24 Months:  A child’s first two years are referred to as “B24” and are a critical time in the growth and development of the brain and body. The most recent Dietary Guidelines for Americans highlights peanuts as “an important source of iron, zinc, protein, choline and long chain polyunsaturated fatty acids.”2
  • For youngsters and teens: On the subject of protein, at 7 grams per ounce, peanuts have more protein than any other nut.6. That’s especially important for girls who work out since protein helps muscles grow, recover and stay healthy.7 Plus, peanuts are satisfying and an easy, on-the-go snack that can be stowed in a backpack, locker or car.
  • For adults and seniors: The Journal of the American Heart Association found that following a plant-based diet with nuts, legumes, fruits and veggies can lower the risk of dying prematurely from multiple causes, including cardiovascular disease, one of the leading causes of death worldwide.In addition, phytosterols, like those found in peanuts, may inhibit the growth of cancers that affect millions of women, including lung, stomach, ovarian, colon and breast cancers.9-12

I did not look to see whether the references were funded by the peanut industry, but there is plenty of precedent.  See, for example,

But there’s more.  A reader, Monica Baer, sent me another press release from the Peanut Institute: New Gut Microbiome Research Points to Positive Impact on Memory and Mood from Peanut Consumption

Research from the University of Barcelona on the gut microbiota has found that daily consumption of peanuts and peanut butter can produce compounds in the gut that help improve memory and reduce stress response, including anxiety and depression, in healthy young adults. Findings from the ARISTOTLE study were published online in the Journal of Functional Foods this September and shared by The Peanut Institute

I did look up this one: Isabella Parilli-Moser, Ricardo López-Solís, Inés Domínguez-López, Anna Vallverdú-Queralt, Sara Hurtado-Barroso, Rosa M Lamuela-Raventós, Consumption of peanut products enhances the production of microbial phenolic metabolites related with memory and stress response: Results from the ARISTOTLE trial, Journal of Functional Foods, Volume 108, 2023, 105746, https://doi.org/10.1016/j.jff.2023.105746.

Funding: This work was supported by funding from the Peanut Institute.

I like peanuts.  They are legumes and real foods.  But to attribute overall health and memory function to eating peanuts seems a bit far-fetched.  That’s why the Peanut Institute is funding research: to convince you peanuts are a superfood.  There is, of course, no such thing.  Superfood is a marketing term.  Should you eat peanuts?  Sure.  Why not?

May 9 2024

Industry-funded study of the week: mangos

Usually, I post something about research conflicts of intereest on Mondays, but am doing that today instead.

Three readers sent news about this study to me, so for that alone it’s worth sharing.

First, the press release:

Associations between mango eaters and moms-to-be: better diets and improved nutrient intakes: New NHANES analysis reveals meals including mangos associated with higher healthy eating index and better nutrition for healthy pregnancies.

Any time you see a headline like this, your first question should be: Who paid for this?

The study: Mango Consumption Was Associated with Higher Nutrient Intake and Diet Quality in Women of Childbearing Age and Older Adults.  Kristin Fulgoni and Victor L. Fulgoni III. Nutrients 202416(2), 303; https://doi.org/10.3390/nu16020303.

Conclusion: “This study suggests incorporating mango into the diet could increase select nutrient intake as well as diet quality in specific life stages of adult Americans.”

Funding: “This research was funded by the National Mango Board.”  [Bingo!]

Conflicts of interest: V.L.F.III and K.F. are employees of Nutrition Impact, LLC, a food and nutrition consulting firm which analyses NHANES data for numerous food and beverage companies and related entities. Nutrition Impact has a contract with the National Mango Board.

Comment: The National Mango Board contracted with the authors to produce this analysis. Its results are predictable.  Guess what: eating fruit increases intake of the nutrients contained in that fruit.  Eating fruit increases the quality of the diet.  I could have told them that.

I do love mangos, although they taste much better—like eating perfume—in their countries of origin.  I’m allergic to their skins and pits, however, and have to eat them carefully.  The Mango Board must think research results like this will increase sales.

Here’s how the Mango Board advertises this fruit:

Mangos pack a nutritional punch.

  • Each serving of mango is fat free, sodium free and cholesterol free.
  • Mangos contain over 20 different vitamins and minerals, helping to make them a superfood.

Superfood?  A marketing term.

Mar 25 2024

A rare gem: an industry-funded study with a negative result, and for blueberries yet!

I’ve posted several studies sponsored by the blueberry industry , most recently on their effects on menopausal symptoms.  Blueberry trade associations, as I discuss in my book Unsavory Truth: How the Food Industry Skews the Science of What We Eat, led the way in promoting research suggesting this fruit is a “superfood.”

If only.

They are still at it, apparently, but sponsorship does not always guarantee the desired outcome.  Here is a rare exception to the rule that industry-sponsored studies almost invariably give results favorable to the sponsor’s marketing interest.  Let’s give credit where it is due.

  • The study:  Chronic and postprandial effect of blueberries on cognitive function, alertness, and mood in participants with metabolic syndrome – results from a six-month, double-blind, randomized controlled trial.  The American Journal of Clinical Nutrition.  Available online 6 February 2024, https://doi.org/10.1016/j.ajcnut.2023.12.006
  • Methods: “A double-blind, randomized controlled trial was conducted, assessing the primary effect of consuming freeze-dried blueberry powder, compared against an isocaloric placebo, on cardiometabolic health >6 mo and a 24 h postprandial period (at baseline).”
  • Results: “Postprandial self-rated calmness significantly improved after 1 cup of blueberries (P = 0.01; q = 0.04; with an 11.6% improvement compared with baseline between 0 and 24 h for the 1 cup group), but all other mood, sleep, and cognitive function parameters were unaffected after postprandial and 6-mo blueberries.”
  • Conclusion: “Although self-rated calmness improved postprandially, and significant cognition-metabolite associations were identified, our data did not support strong cognitive, mood, alertness, or sleep quality improvements in MetS participants after blueberry intervention.”
  • Conflict of interest: “AC reports financial support provided by the US Highbush Blueberry Council (USHBC) and Biotechnology and Biological Sciences Research Council (BBSRC, UK). AC and EBR both act as advisors and consultants to the United States Highbush Blueberry Council grant committee. All other authors report no conflicts of interest.”
  • Funding: “This work was supported by the United States Highbush Blueberry Council with oversight from the USDA and the Biotechnology and Biological Sciences Research Council (United Kingdom). The funders of this research had no involvement in this publication and have placed no restrictions on the publication of these data.”

Comment: In this instance, the last statement could well be correct (it isn’t always, alas).  I like blueberries but they are not a superfood.  There is no such thing as a superfood.  If you want to eat healthfully, by all means eat fruit—and enjoy the ones you like best.

Mar 1 2024

Weekend reading: the ironies of drinking fluid milk

Anne Mendelson.  Spoiled: The Myth of Milk as Superfood.  Columbia University Press, 2023 (396 pages).

 

I am an admirer of Anne Mendelson’s books and did a blurb for her Chow Chop SueyBut this one is over the top—original, compelling, brilliantly written.

Driving this book is a question I’ve not heard asked before, at least not so directly: Why and how did the consumption of fresh liquid milk (“drinking-milk”)—as opposed to fermented dairy products—become framed as a nutritional necessity?

Her question derives from some basic facts about cow’s milk and its industrial production:

  • Once cow’s milk leaves the udder, it is easily contaminated with pathogenic bacteria.
  • Most adults have stopped making the enzyme that digests the sugar lactose in milk and can’t drink it without getting unpleasant digestive systems.
  • To produce milk safely requires complicated and expensive industrial processes.
  • The cost of milk production exceeds the price people are willing to pay for it; dairy farming is a losing proposition even with taxpayer subsidies.
  • Industrial milk production is hard on cows and pollutes the environment.

Why are we even doing this?  For this, she blames 19th and 20th century European and American doctors who thought the ability to digest lactose normal, nutritionists (calcium!), and the USDA (3 servings a day!).

She is not against eating dairy foods when they are fermented.  These, yogurt and the like, are much safer.  Friendly bacteria split the lactose along with producing acid that destroys pathogens.

You don’t have to agree with all her points to appreciate how well they are argued.

To wit:

[The book] argues that influential nutritional theories about fresh and fermented milk took a disastrously wrong turn in the eighteenth century.  The reason is that the founders of modern Western medicine had no way of understanding the genetic fluke that allowed them, unlike most of the world’s peoples, to digest lactose from babyhood to old age.  In other words, today’s mega-industry stemmed from a lack of scientific perspective.  That lack turned the one form of milk that is most fragile, perishable, difficult to produce on a commercial scale, and economically pitfall-strewn into a supposed daily necessity for children and, to a lesser extent, adults.  [pp x, xi].

No other food product is as staggeringly difficult and expensive to get from source (in this case, a cow) to destination (milk glass on table) in something loosely approximating its first condition.  If one existed, it would be treated as an astounding luxury. [p. 1].

Mendelson takes deep dives into the history of dairy use, dietary recommendations, industrial production, and government dairy policy.  In attempting to teach about the Farm Bill, I was defeated by Milk Marketing Orders, the formulas used by the government to set price support levels required to be paid by “handlers” (milk processors) to dairy producers in different areas of the country.  I could not find anything about this in the index, alas, but I loved what she says about them on page 205.

These formulas gradually became as abstruse, and as unintelligible to anyone outside a small charmed circle, as anything in the bad old days before the federal government stepped in.  Far from abolishing the buyer’s market, they trapped farmers selling fluid milk within the marketing order system in endless struggles to wring enough out of handlers to recoup production costs….What I do understand is that as the postwar era advanced, the sheer incomprehensibility of producer-handler milk price schemes again became an endless frustration to dairy farmers, above all those trying to make a living within the marketing order system for drinking-milk.

One final irony:

Nothing is going to dislodge supermarket drinking-milk from its towering economic importance.  It is certain to continue along the track of expansion, consolidation, and increasingly complex technological infrastructure that it has pursued for almost three quarters of a century.  Big Milk is going to become Bigger Milk.  Its absurdities are also sure to become more entrenched.  The greatest of these is the plain fact that Americans are drinking less milk while dairy farms are producing more of it.

A personal comment: The book triggered a memory.  I once visited a school lunch program in Barrow (now Utqiaġvik), Alaska.  Inuit children were served the standard USDA lunch, which requires half-pint cartons of milk.  I did not see any of them drinking it.  The untouched cartons were discarded.  The milk was not only culturally inappropriate, but wasteful.  All food in that part of North Alaska has to be flown in on airplanes.

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