by Marion Nestle

Currently browsing posts about: Sugars

Dec 22 2025

Industry-influenced study of the week: taste for sweets

Alert to readers: Amazon.com displays listings for several more workbooks, study guides, and cookbooks purportedly based on my book, What to Eat Now (see previous post on this).  I did not write any of them.  Caveat emptor!

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Thanks to Erin Croom from Small Bites Adventure Club! for sending this one.

  • The Study: The Sweet Tooth Trial: A Parallel Randomized Controlled Trial Investigating the Effects of A 6-Month Low, Regular, or High Dietary Sweet Taste Exposure on Sweet Taste Liking, and Various Outcomes Related to Food Intake and Weight Status. The American Journal of Clinical Nutrition. Available online 27 November 2025, 101073. https://doi.org/10.1016/j.ajcnut.2025.09.041
  • Methods: The investigators gave 180 healthy adults dietary advice plus about half their calories from meals containing 7%, 35%, or 80% food and beverages sweetened with sugars or artificial sweeteners.
  • Results: no differences in sweet taste liking or perception or sweet food choice.
  • Conclusions: “In the current trial, altering exposure to sweet-tasting foods did not change sweet taste liking, nor other outcomes. These results do not support public health advice to reduce exposure to sweet-tasting foods, independent of other relevant factors such as energy density and food form.
  • Funding: “The sweet tooth project…also received private contributions from: American Beverage AssociationApura IngredientsArla Foods ambaCargill R&D Centre Europe BVBACosun Nutrition CenterDSM-FirmenichInternational Sweeteners AssociationSinoSweet Co., Ltd., and Unilever Foods Innovation Centre Wageningen.”
  • Conflict of interest: “MM has previously received research funding from Royal Cosun (sugar beet refinery) and Sensus (inulin producer) and has received expenses from ILSI Europe. MB has received research funding from Horizon 2020 SWEET…KMA has previously received research funding from the International Sweeteners Association, BE, and has current funding from The Coca Cola Company, US, and Ajinomoto Health and Nutrition North America Inc. US; KMA has received speaker’s expenses from EatWell Global and PepsiCo. KdG is a member of the Global Nutrition Advisory Board of Mars company. KdG has received travel, hotel, and speaker renumeration from the International Sweeteners Association, and received speaker expenses from ILSI North America.”

Comment: The point of all this was to demonstrate that public health recommendations to reduce sugar intake in order to reduce the taste for sugar won’t do any good, so why bother.  To restate the obvious: sugars have calories but no nutrients, and taking in a lot of them at once—as in soft drinks—messes up metabolism and is best avoided.  Eating less of sugary foods and drinks is always a good idea.  But, as I am always pointing out, eating less is bad for business.  Hence this study.

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Oct 31 2025

Trick or Treat: Happy Halloween Candy!

Halloween, no matter its origins and promotion of costumes, means only one thing to the candy industry: sales.

And plenty of detailed research helps that along.

America’s Halloween Sweet Tooth: Instacart’s 2025 Candy & Decor Trends: Who loads up on candy the most? Since Utah’s first full year on the Instacart platform, Utah has once again decisively claimed the crown, buying candy 50% more often than the national average in October 2024.

And if you ever wondered which candies sell best?

Selling Halloween candy

Enjoy!

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Aug 27 2025

Nutritionally hilarious: Louisiana’s definition of “soft drinks” for its SNAP waiver

I am indebted to Melissa Fuster at Tulane University (congratulations on achieving tenure!) and Megan Knapp of Xavier University of Louisiana for telling me about this one.

The USDA has just approved a waiver for the State of Louisiana to exclude soft drinks, energy drinks, and candy from allowable purchases with SNAP benefits.

Check the definition of  excluded soft drinks [my emphasis]:

“Soft drinks” are defined as any carbonated nonalcoholic beverage containing high fructose corn syrup or artificial sweeteners.

By this definition, soft drinks made with cane or beet sugar are fully allowed to be purchased using SNAP benefits.

What is the difference between high fructose corn syrup and cane or beet sugar?  Not much.  All are mixtures of glucose and fructose and have the same number of calories.

So why the distinction?

Guess which state is the #2 producer of cane sugar.

As I said, nutritionally hilarious (see my clip in John Oliver’s Last Week Tonight on this point).

Jul 22 2025

President Trump says sucrose is better than HFCS (both are glucose plus fructose)

The President of the United States says Coke should switch from high fructose corn syrup (HFCS) to cane sugar.

My response: this is nutritionally hilarious.

  • HFCS is glucose and fructose separated in liquid form.
  • Cane sugar (sucrose) is glucose and fructose bonded, but quickly split (so is beet sugar, but the President is not mentioning it).
  • Both HFCS and cane sugar are sugar(s).  Both provide about 4 calories per gram.
  • There may be people who can taste the difference, but when Coke found that nobody could tell the difference, it switched from sucrose to HFCS.

I’ve written about this previously, most recently in 2014: HFCS politics, continued. Endlessly.

Yes, HFCS is derived from genetically modified corn, but that doesn’t change the basic biochemistry, taste, or health effect.

Note: A 12-ounce Coke has 39 grams of either one.  It doesn’t matter which sugar is used; it’s too much to be consumed at one time.

At the time Coke switched to HFCS, it was much cheaper.  It is still cheapter but less so (because half of corn production is used to produce ethanol).

It will cost Coke more to replace HFCS with cane sugar or even beet sugar (which is identical to cane sugar).  So Coke is not exactly committing to doing this.

As Reuters reports, the switch would raise prices for consumers and be tough on US farmers too.

On this issue, I have to agree for once with the Corn Refiners Association.

This is one of those issues it will be enormous fun to watch.  Stay tuned.

Jun 2 2025

Industry-funded scientific scandal: maple syrup, alas

Why alas?  I love maple syrup.

But the Quebec Maple Syrup Producers association apparently has decided that it needs to boost sales by promoting maple syrup as a superfood.

Sigh.

The article in the New York Times is titled: “A Scientist Is Paid to Study Maple Syrup. He’s Also Paid to Promote It.”

The subtitle: “Funded by the maple industry, a researcher has exaggerated his findings to suggest that syrup could help prevent serious diseases.”

For more than a decade, Navindra Seeram, a biomedical researcher, has praised maple syrup, calling it a “hero ingredient” and “champion food” that could have wide-ranging health benefits…As he straddles the realms of scientific inquiry and promotion, he has distorted the real-world implications of his findings and exaggerated health benefits…In videos and press releases, he has suggested that consuming maple syrup may help stave off diseases including cancer, Alzheimer’s and diabetes.

The article continues…

At the University of Rhode Island, where he worked until last year, Dr. Seeram oversaw projects that were awarded $2.6 million in U.S. government funding, including a grant explicitly intended to increase maple syrup sales. That promotional work produced a stream of social media posts like, “Maple Syrup’s Benefits: Anti-Cancer, Anti-Oxidant, Anti-Inflammatory.”

Oh how I wish.

As for who pays for this,

The Quebec Maple Syrup Producers, an industry association that markets and regulates most of the world’s maple syrup, has long funded Dr. Seeram’s work. The association and the Canadian government have together provided at least $2.8 million for his research, according to a 2019 grant applicatio

Maple syrup is just a form of sugar, and mostly sucrose at that.  It does have a few minerals in small amounts, along with its fabulously delicious flavoring ingredients.

But a nutritional powerhouse?  Alas, no.

Apr 9 2025

What’s up with candy? And its food dyes?

I don’t say much about candy on this site, mainly because it’s best consumed in small amounts, if at all.

Candy sellers, however, have a very different view.  Their job is to sell candy, and the more the better (never mind consequences).

I’m always interested to see what they say and do to increase sales, especially when they try to make candy seem healthier (oops).

Dec 16 2024

Industry-funded study of the week: Honey

A reader, Colleen Wysocki, sent me a note about this study, the basis of a Nutrition and Dietetics SmartBrief e-mailed to members from the Academy of Nutrition and Dietetics to members.

 RD: Enhance yogurt’s probiotic power with honey…A study in the Journal of Nutrition published earlier this year found that clover honey helps probiotics in yogurt survive longer during digestion, particularly benefiting the probiotic Bifidobacterium animalis…honey adds antioxidants and acts as a protective agent for probiotics. Research advises using just one to two tablespoons of clover honey per serving to optimize probiotic survival.

Here’s the study: Alvarado DA, Ibarra-Sánchez LA, Mysonhimer AR, Khan TA, Cao R, Miller MJ, Holscher HD. Honey Varietals Differentially Impact Bifidobacterium animalis ssp. lactis Survivability in Yogurt through Simulated In Vitro Digestion. J Nutr. 2024 Mar;154(3):866-874. doi: 10.1016/j.tjnut.2024.01.010.

Method: This was an in vitro (petri dish) study of the effects of honey on bacterial counts, with and without the addition of “simulated intestinal fluids.”

Results: “Yogurt with 10-20% wt/wt clover honey increased B. animalis survivability after simulated in vitro digestion (≤ ∼4.7 Log CFU/g survival; P < 0.05).”

Conclusion: “Yogurt with added honey improves probiotic survivability during in vitro digestion.”

Funding: “This work was supported partially by the National Honey Board (HDH and MJM).”

Comment: Honey may be delicious, and no wonder; it is 82% sugar, mostly fructose (41%) and glucose (35%) and not all that different biochemically from sucrose (table sugar).  The reason why the Honey Board funded this study must surely be to demonstrate that adding honey (i.e., sugar) to your yogurt is good for you.  And don’t we all love results like this?

Dec 11 2024

Santa Cruz passes soda tax!

The Santa Cruz Sentinal says Measure Z soda tax officially passes in Santa Cruz.

According to the Santa Cruz County Elections Department, 15,780 votes were counted in favor of the ballot initiative, or about 52%, and 14,364 votes, or approximately 48%, were counted against the passage of Measure Z….“Despite being outspent $1.9 million to our $85,000 by corporate special interests, the people of Santa Cruz stood strong and made their voices heard.”

The tax has been a long time coming.  It was first proposed in 2018, but was blocked by a California state act backed by the soda industry which prevented taxes on groceries until 2031.  Lawsuits overturned the penalty provision of the act, which allowed tax proposals to continue.

Politico reviews the history of soda tax fights in California.

Berkeley voted to renew its existing tax, no doubt for these reasons and despite being outspent tenfold.

Research looking at the last decade of Berkeley’s sugary drink tax shows the tax is working: Consumption of sugary drinks dropped by 52% and water increased by 29% among Berkeley residents in diverse neighborhoods with a large proportion of Black and Latino residents. In addition, 16 hydration stations have been installed and $5.7 million has been invested into 18 community gardens at Berkeley Unified School District sites. Funding has also supported vital public health and sustainability programs through organizations like Lifelong Medical Care, Healthy Black Families, The Multicultural Institute, YMCA of the East Bay Early Childhood Impact and The Ecology Center.

The point of all this:

Sugary drinks are the largest source of added sugar in the American diet. The American Heart Association recommends no more than six teaspoons of added sugar per day for women and nine teaspoons for men. One 12-ounce can of sugared soda contains about 10 teaspoons.