Skip to main content

Study the use of nanoparticles in food

By Andy Behar, Special to CNN
February 14, 2013 -- Updated 1249 GMT (2049 HKT)
STORY HIGHLIGHTS
  • Andy Behar: Some foods contain tiny, engineered particles called nanomaterials
  • Behar: Nanoparticles might pose health risks, since they have adversely affected mice
  • He says not enough studies have adequately demonstrated the safety of nanoparticles
  • Behar: With an emerging technology such as this, companies have to be careful

Editor's note: Andy Behar is the chief executive of As You Sow, a nonprofit organization that promotes corporate accountability.

(CNN) -- Some foods sold in supermarkets across America contain tiny, engineered particles called nanomaterials. Our organization decided to test doughnuts after learning that the titanium dioxide used as a coloring in the powdered sugar coating likely contained nano-sized particles.

The tests, conducted by an independent laboratory, found that both Dunkin' Donuts Powdered Cake Donuts and Hostess Donettes did indeed contain titanium dioxide nanoparticles. In response, a spokeswoman for Dunkin Donuts said the company was looking into the matter.

You must be wondering: What are nanomaterials? They are microscopic in size. "If a nanoparticle were the size of a football, a red blood cell would be the size of the field." Nanoparticles have been heralded as having the potential to revolutionize the food industry -- from enabling the production of creamy liquids that contain no fat, to enhancing flavors, improving supplement delivery, providing brighter colors, keeping food fresh longer, or indicating when it spoils.

Andy Behar
Andy Behar

But there are a few problems.

One is that no one knows how many and which food products have them. Companies are not being forthcoming about whether they are using nanoparticles. To further complicate the issue, some companies may not even be aware that they are selling products containing them.

Many companies are reluctant or uninterested in discussing the issue, and concrete information has been difficult to obtain. The majority of food companies are not responsive in providing information about their specific uses, plans and policies toward nanoparticles. There is also no law in the United States that requires disclosure. In contrast, companies in the European Union are required to label foods containing nanoparticles.

The bigger issue with nanoparticles is that they might pose health risks, as they have been found to in tests on mice.

There are not nearly enough studies that can adequately demonstrate the safety of nanoparticles in food additives or packaging. Scientists are still investigating how the broad range of nanoparticles, with their myriad potential uses, would react in the body.

When ingested, nano-sized particles can pass into the blood and lymph, where they circulate through the body and reach in potentially sensitive sites such as bone marrow, lymph nodes, the spleen, the brain, the liver and the heart.

Our knowledge about how nanomaterial food additives react in the body and their health impact is still in its infancy. While efforts are under way to understand them better, much deeper scientific inquiry should occur before nanoparticles are sold in food and food-related products.

More companies and consumers need to be aware of the use of engineered nanomaterials in foods and the potential unknown risks of this technology. More food products like M&M's and Pop-Tarts should be tested as recent studies have identified them as likely to contain nanomaterials as well.

Fortunately, a few companies have become willing to take a public position on nanoparticles.

McDonald stated that it "does not currently support the use by suppliers of nano-engineered materials in the production of any of our food, packaging, and toys." Similarly, Kraft Foods said that it was not using nanotechnology.

Some of the largest food companies in the world, including YUM! Brands, PepsiCo, and Whole Foods, need to know more about nanomaterials and check with their supplies to see if they are using them.

Americans are becoming increasingly interested in what is in the food they're eating. No longer content with label information on daily allowances of vitamins and minerals, U.S. consumers are following the lead of their counterparts in many other countries by demanding more disclosure about where and how their food is grown and whether it is safe.

Even though communicating risks to consumers can be challenging, the public's perception of safety will be paramount in determining the acceptance of nanomaterials. This is especially true for an emerging food-products technology the safety of which even the FDA has acknowledged a lack of understanding.

Follow us on Twitter @CNNOpinion.

Join us on Facebook/CNNOpinion.

The opinions expressed in this commentary are solely those of Andy Behar.

ADVERTISEMENT
Part of complete coverage on
April 18, 2014 -- Updated 1311 GMT (2111 HKT)
John Sutter: Bad news, guys -- the pangolin we adopted is missing.
April 18, 2014 -- Updated 1252 GMT (2052 HKT)
Ben Wildavsky says we need a better way to determine whether colleges are turning out graduates with superior education and abilities.
April 18, 2014 -- Updated 1026 GMT (1826 HKT)
Charles Maclin, program manager working on the search and recovery of Malaysia Flight 370, explains how it works.
April 18, 2014 -- Updated 1250 GMT (2050 HKT)
Jill Koyama says Michael Bloomberg is right to tackle gun violence, but we need to go beyond piecemeal state legislation.
April 17, 2014 -- Updated 1845 GMT (0245 HKT)
Michael Bloomberg and Shannon Watts say Americans are ready for sensible gun laws, but politicians are cowed by the NRA. Everytown for Gun Safety will prove the NRA is not that powerful.
April 17, 2014 -- Updated 1328 GMT (2128 HKT)
Ruben Navarrette says Steve Israel is right: Some Republicans encourage anti-Latino prejudice. But that kind of bias is not limited to the GOP.
April 16, 2014 -- Updated 2323 GMT (0723 HKT)
Peggy Drexler counts the ways Phyllis Schlafly's argument that lower pay for women helps them nab a husband is ridiculous.
April 16, 2014 -- Updated 1642 GMT (0042 HKT)
Rick McGahey says Rep. Paul Ryan is signaling his presidential ambitions by appealing to hard core Republican values
April 16, 2014 -- Updated 1539 GMT (2339 HKT)
Paul Saffo says current Google Glasses are doomed to become eBay collectibles, but they are only the leading edge of a surge in wearable tech that will change our lives
April 15, 2014 -- Updated 1849 GMT (0249 HKT)
Kathleen Blee says the KKK and white power or neo-Nazi groups give haters the purpose and urgency to use violence.
April 16, 2014 -- Updated 1156 GMT (1956 HKT)
Sen. Sheldon Whitehouse and Rep. Henry Waxman say read deep, and you'll see the federal Keystone pipeline report spells out the pipeline is bad news
April 16, 2014 -- Updated 1153 GMT (1953 HKT)
Frida Ghitis says President Obama needs to stop making empty threats against Russia and consider other options
April 15, 2014 -- Updated 2129 GMT (0529 HKT)
Peter Bergen and David Sterman say the Kansas Jewish Center killings are part of a string of lethal violence in the U.S. that outstrips al Qaeda-influenced attacks. Why don't we pay more attention?
April 14, 2014 -- Updated 1156 GMT (1956 HKT)
Most adults make the mistakes of hitting the snooze button and of checking emails first thing in the morning, writes Mel Robbins
April 14, 2014 -- Updated 1754 GMT (0154 HKT)
David Wheeler says as middle-class careers continue to disappear, we need a monthly cash payment to everyone
ADVERTISEMENT