by Marion Nestle

Search results: Bisphenol A

Jun 14 2019

Weekend reading: Canned

Anna Zeide.  Canned: The Rise and Fall of Consumer Confidence in the American Food Industry.  University of California Press, 2018.

Image result for Canned: The Rise and Fall of Consumer Confidence in the American Food Industry

This book uses the history of canned foods—beginning with condensed milk, peas, olives, tomatoes, and tuna, and ending up with BPA (bisphenol A, an endocrine disrupter)—to examine Americans’ changing relationship with industrially produced foods.

Canned foods have had their ups and downs in this country.  As Zeide explains, canning

means that people who have insecure housing without steady access to refrigeration, or who simply to not have the time or materials to prep fresh ingredients, can still eat relatively healthful meals.  Canned fruits, vegetables, and fish would be welcome additions to the food deserts of many low-income areas, which otherwise provide highly processed, sugary, and fatty foods with little nutritional quality.  Relatedly, the rejection of canned food—especially among members of a younger generation who hail from middle-and upper-class backgrounds—has implicit class biases.  Cans were once a symbol of modernity in the United States but now are seen as poverty food.  If we are to expect a fresher, perhaps healthier, way of eating to spread to all people, we must create economic and regulatory systems that make that possible (p. 192).

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Sep 19 2012

JAMA publishes theme issue on obesity

Yesterday, JAMA released a theme issue on obesity with several articles of particular interest, starting with New York City Health Commissioner Tom Farley’s Viewpoint.  About portion sizes, Dr. Farley notes:

As publicly traded companies responsive to the interests of their shareholders, food companies cannot make decisions that will lower profits, and larger portion sizes are more profitable because most costs of delivering food items to consumers are fixed….The sale of huge portions is driven by the food industry, not by consumer demand….The portion-size studies strongly suggest that, with a smaller default portion size, most consumers will consume fewer calories.  This change will not reverse the obesity epidemic, but it can have a substantial effect on it.

Lots of interesting food for thought here.  Take a look:


Viewpoint

The Role of Government in Preventing Excess Calorie Consumption:  The Example of New York City
Thomas A. Farley, MD, MPH
JAMA. 2012;308(11):1093 doi:10.1001/2012.jama.11623

The Next Generation of Obesity Research:  No Time to Waste
Griffin P. Rodgers, MD; Francis S. Collins, MD, PhD
JAMA. 2012;308(11):1095 doi:10.1001/2012.jama.11853

FDA Approval of Obesity Drugs:  A Difference in Risk-Benefit Perceptions
Elaine H. Morrato, DrPH, MPH; David B. Allison, PhD
JAMA. 2012;308(11):1097 doi:10.1001/jama.2012.10007

Cardiovascular Risk Assessment in the Development of New Drugs for Obesity
William R. Hiatt, MD; Allison B. Goldfine, MD; Sanjay Kaul, MD
JAMA. 2012;308(11):1099 doi:10.1001/jama.2012.9931

Original Contribution

Exercise Dose and Diabetes Risk in Overweight and Obese Children:  A Randomized Controlled Trial
Catherine L. Davis, PhD; Norman K. Pollock, PhD; Jennifer L. Waller, PhD; Jerry D. Allison, PhD; B. Adam Dennis, MD; Reda Bassali, MD; Agustín Meléndez, PhD; Colleen A. Boyle, PhD; Barbara A. Gower, PhD
JAMA. 2012;308(11):1103 doi:10.1001/2012.jama.10762

Association Between Urinary Bisphenol A Concentration and Obesity Prevalence in Children and Adolescents
Leonardo Trasande, MD, MPP; Teresa M. Attina, MD, PhD, MPH; Jan Blustein, MD, PhD
JAMA. 2012;308(11):1113 doi:10.1001/2012.jama.11461

Health Benefits of Gastric Bypass Surgery After 6 Years
Ted D. Adams, PhD, MPH; Lance E. Davidson, PhD; Sheldon E. Litwin, MD; Ronette L. Kolotkin, PhD; Michael J. LaMonte, PhD; Robert C. Pendleton, MD; Michael B. Strong, MD; Russell Vinik, MD; Nathan A. Wanner, MD; Paul N. Hopkins, MD, MSPH; Richard E. Gress, MA; James M. Walker, MD; Tom V. Cloward, MD; R. Tom Nuttall, RRT; Ahmad Hammoud, MD; Jessica L. J. Greenwood, MD, MSPH; Ross D. Crosby, PhD; Rodrick McKinlay, MD; Steven C. Simper, MD; Sherman C. Smith, MD; Steven C. Hunt, PhD
JAMA. 2012;308(11):1122 doi:10.1001/2012.jama.11164

Health Care Use During 20 Years Following Bariatric Surgery
Martin Neovius, PhD; Kristina Narbro, PhD; Catherine Keating, MPH; Markku Peltonen, PhD; Kajsa Sjöholm, PhD; Göran Ågren, MD; Lars Sjöström, MD, PhD; Lena Carlsson, MD, PhD
JAMA. 2012;308(11):1132 doi:10.1001/2012.jama.11792

Surgical vs Conventional Therapy for Weight Loss Treatment of Obstructive Sleep Apnea:  A Randomized Controlled Trial
John B. Dixon, MBBS, PhD, FRACGP; Linda M. Schachter, MBBS, PhD; Paul E. O’Brien, MD, FRACS; Kay Jones, MT&D, PhD; Mariee Grima, BSc, MDiet; Gavin Lambert, PhD; Wendy Brown, MBBS, PhD, FRACS; Michael Bailey, PhD, MSc; Matthew T. Naughton, MD, FRACP
JAMA. 2012;308(11):1142 doi:10.1001/2012.jama.11580

Dysfunctional Adiposity and the Risk of Prediabetes and Type 2 Diabetes in Obese Adults
Ian J. Neeland, MD; Aslan T. Turer, MD, MHS; Colby R. Ayers, MS; Tiffany M. Powell-Wiley, MD, MPH; Gloria L. Vega, PhD; Ramin Farzaneh-Far, MD, MAS; Scott M. Grundy, MD, PhD; Amit Khera, MD, MS; Darren K. McGuire, MD, MHSc; James A. de Lemos, MD
JAMA. 2012;308(11):1150 doi:10.1001/2012.jama.11132

Editorial

Progress in Filling the Gaps in Bariatric Surgery
Anita P. Courcoulas, MD, MPH
JAMA. 2012;308(11):1160 doi:10.1001/jama.2012.12337

Progress in Obesity Research:  Reasons for Optimism
Edward H. Livingston, MD; Jody W. Zylke, MD
JAMA. 2012;308(11):1162 doi:10.1001/2012.jama.12203

Dec 19 2011

Today’s oxymoron: a greener soda bottle

On the plastic bottle front, much is happening.

BPA plastics are banned from the European market, only to be replaced by other plastics that seem to have their own problems.  These are detailed in three articles in Food Additives and Contaminants dealing with the migration of chemicals from baby bottles.

  • Santillana et al.,  Migration of bisphenol A from polycarbonate baby bottles purchased in the Spanish market by liquid chromatography and fluorescence detection (2011); doi: 10.1080/19440049.2011.589036.
  • Simoneau, et al., Comparison of migration from polyethersulphone and polycarbonate baby bottles (2011) doi:10.1080/19440049.2011.604644.
  • Simoneau, et al.,  Identification and quantification of migration of chemicals from plastics baby bottles used as substitutes for polycarbonate, ( 2011); doi 10.1080/19440049.2011.644588.

In response to such concerns, soft drink companies are engaging in the latest form of “cola wars,” this time the race to greener bottles.  As the New York Times puts it,

Over their decades of competition, the battle between Coca-Cola and PepsiCo has taken on many colors — brown (cola), orange (juice), blue (sport drinks) and clear (water).

Now, they are fighting over green: The beverage rivals are racing to become the first to produce a plastic soda bottle made entirely from plants.

Coca-Cola has signed up with three biotechnology companies to produce materials for 100% plant-based bottles.  It already has some recyclable PlantBottles, but these are only 30% plant-based (mono-ethylene glycol, MEG).  The other 70% is purified terephthalic acid, PTA.  Coke says it will go to 100% plant-based by 2020.

PepsiCo says it is doing the same thing, only faster.

OK, plant-based.  But from what?

Coke says it is experimenting with Brazilian sugarcane, molasses, and other plant residue materials but might also use crops grown specifically for plastic production.  Pepsi says it will use agricultural waste products, such as corn husks, pine bark or orange peels.

What about corn?  Corn has already been used to produce plastics, but doing this is just like growing food crops for biofuels, causing land conversion, higher food prices, and heavy fertilizer use.

It will be good to get the harmful chemicals out of drink bottles.

But soft drinks are inherently wasteful of natural resources.  All the greenwashing in the world can’t hide that.

Oct 2 2011

What to do about food chemicals eaten in tiny amounts?

My once-a-month, first Sunday Food Matters column in the San Francisco Chronicle is about the difficulty of figuring out the health effects of food chemicals consumed in low doses.

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Taking steps on food chemicals

Editor’s note: Nutrition and public policy expert Marion Nestle answers readers’ questions in this monthly column written exclusively for The Chronicle. E-mail your questions to food@sfchronicle.com, with “Marion Nestle” in the subject line.

Q: I don’t understand why the FDA does not ban aspartame, food colors, BPA, pesticides and all those other nasty chemicals in food. I can’t believe they are good for us.

A: I can’t, either. But the Food and Drug Administration is required to make decisions on the basis of science, not beliefs.

You eat these chemicals in tiny amounts – parts per billion or trillion. Whether doses this low cause harm is hard to assess for two reasons: science and politics. Scientists cannot easily measure the health effects of exposure to low-dose chemicals. And the industries that make and use these chemicals don’t want to give them up.

Food chemicals elicit plenty of public dread and outrage. But are they harmful?

Controlled clinical trials at normal levels of intake would require vast numbers of subjects over decades. Nobody would fund them.

Instead, researchers use animals consuming much higher doses. I can remember how the diet soda industry ridiculed studies suggesting that saccharine caused bladder cancer in rats: the doses were equivalent to drinking 1,250 12-ounce diet sodas a day.

The difficulties of doing research on low-dose chemicals – and the food industry’s insistence that such doses are safe – explains the FDA’s reluctance to act.

Some examples illustrate the problem.

Aspartame

Some studies suggest that aspartame might cause cancer in rats when consumed at levels typical of diet soft drinks, as well as other problems. But researchers performing better controlled studies have given aspartame a clean bill of health.

Despite public concerns, the FDA’s assessment of the evidence “finds no reason to alter its previous conclusion that aspartame is safe as a general purpose sweetener in food.”

Food dyes

These have been considered a possible cause of hyperactivity in children since the 1970s. Some studies show improved behavior among children placed on additive-free diets. But behavior is difficult to judge objectively, and even controlled studies gave mixed results.

A recent study funded by the British Food Standards Agency is typical. It found most children to be unaffected by removing additives. But a small percentage seemed to get better.

The FDA can only conclude that there is not enough science to decide whether food dyes cause hyperactivity.

BPA (Bisphenol A)

BPA is a component of hard plastic used to make baby bottles and food and beverage cans. It is also an endocrine disrupter. Last year, the FDA concluded that BPA is safe at current exposure levels.

At the same time, the FDA advised children and pregnant women to reduce exposure to BPA. It advised the infant formula and soda industries to find ways to replace it.

The California Legislature has passed AB1319 banning BPA from baby bottles and sippy cups; it’s awaiting Gov. Jerry Brown’s signature.

Recent studies raise concerns about BPA’s effects on the brain and behavior of fetuses, infants and young children, and on cancer, obesity and infertility in adults. Some studies suggest that exposure to BPA is higher than previously estimated. Just last week, the Breast Cancer Fund released a study finding BPA in canned foods designed for children.

Studies by university scientists tend to find harm from BPA at low doses, whereas those by government regulatory agencies and the food industry do not. In the absence of compelling science, regulators have two choices: exercise the “precautionary principle” and ban the chemical until it can be proven safe, or approve it until it can be shown to be harmful.

The United States and European safety agencies – and the food industry, of course – prefer the latter approach.

Pesticides

Research clearly demonstrates that pesticides harm farmworkers exposed to high doses. But recent studies report slightly lower IQ levels in children born to urban women with higher blood levels of pesticides. Although these studies did not control for socioeconomic and other variables that might influence IQ, they raise the possibility that even low levels might be harmful.

What to do?

While waiting for the science to evolve, you can take both personal and political action.

You don’t want potentially harmful chemicals in your foods? Read labels and don’t buy foods with artificial sweeteners or food colors. Kids don’t need them anyway.

Consumer action has already induced baby bottle makers to get rid of BPA. This strategy can work for food colors, too.

Don’t stop eating fruits and vegetables. Their known health benefits greatly outweigh the potential harm of pesticides. Don’t stop eating them.

Buy organic. Pesticides, invisible and unlabeled as they are, constitute a good reason to do so.

Get political. Let your congressional representatives know that more research is needed, but you don’t want to wait for it. You want industry to find healthier alternatives.

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Marion Nestle is the author of “Food Politics” and “What to Eat,” among other books, and is a professor in the nutrition, food studies and public health department at New York University. E-mail comments to food@sfchronicle.com.

This article appeared on page G – 10 of the San Francisco Chronicle

 

Jan 18 2010

The FDA’s BPA “concerns” get a response

The FDA’s recently stated concerns about the health effects of bisphenol A did not go unnoticed.

The European Food Safety Authority is keeping a close eye on the FDA action because the two agencies have an agreement to cooperate.   But the U.K.’s Food Standards Agency continues to maintain that BPA is safe at current levels of exposure:

a 3-month-old bottle-fed baby weighing around 6 kg would need to consume more than four times the usual number of bottles of baby formula a day before it would reach the tolerable daily intake set by EFSA in 2006.

It is amusing to read the predictable responses of stakeholders who have a vested interest in demonstrating that BPA is safe – the chemical, plastics, and grocery manufacturers, for example.   In contrast, the Environmental Working Group said that the reversal of the FDA’s position is likely to be:

the Waterloo [that ends] nearly a decade of agency collusion with BPA manufacturers… It represents a victory for parents and children, and validation of the hundreds of independent studies linking BPA to numerous and serious health problems.

How harmful is BPA?  I have no idea.  I wish the FDA would release its review of the research.  But even without it there is now enough evidence questioning the safety of BPA to invoke the “precautionary principle:” don’t use it until it is proven safe.

Are BPA plastics essential in our food supply?  Clearly not.

Jan 1 2010

What’s up with food and nutrition in 2010?

My San Francisco Chronicle column, now appearing in print on the first Sunday of the month, is also online.

Its title:  “Hot food issues ready to boil over this year.”

Q: What do you think will happen with food and nutrition in 2010?

A: I wish I could read the leaves while I drink tea, but the best I can do is tell you which issues I’m going to be watching closely this year.

Hunter Public Relations recently asked 1,000 Americans which food-related issues they thought were most important in 2009. The top three? Food safety, hunger and food prices. For the decade, the winner was childhood obesity.

I have my own top 10 list of hot-button issues for 2010, and here they are:

  • Hunger: More than 35 million Americans get benefits to which they are entitled under the Supplemental Nutrition Assistance Program (formerly, food stamps). The economy may be improving, but not quickly enough for millions who have lost jobs, health care and housing. Will Congress do anything this year to strengthen the safety net for the poor? It needs to.
  • Childhood obesity: Rates of childhood obesity may have stabilized, but we all want to figure out how to prevent kids from gaining so much weight that they develop adult chronic diseases. I expect to see more efforts to improve school food and make neighborhoods more conducive to walking to school, riding bikes and playing outside.
  • Food safety regulation: Congress is sitting on a bill to give the Food and Drug Administration some real authority for food safety. The bill does not do what is most needed – establish a single food-safety agency – but is a reasonable step in the right direction. Let’s hope Congress gets to it soon.
  • Food advertising and labels: The long-dormant FDA and Federal Trade Commission are getting busy at last. In the wake of the Smart Choices fiasco, the FDA is working to make package labels less misleading and easier to understand. The agencies have proposed nutrition standards for products marketed to children. These voluntary standards fall far short of my preference – an outright ban on marketing junk foods to kids – but puts food companies on notice that their products are under scrutiny. The FDA is also working on designs for front-of-package labels. I’m hoping it chooses a “traffic-light” system that marks foods with a green (any time), yellow (sometimes) or red (hardly ever) dot. Expect plenty of opposition from the makers of red-dotted products.
  • Meat: The meat industry has been under fire for raising food animals under inhumane conditions, using unnecessary hormones and antibiotics, mistreating immigrant labor, and polluting soil and water. Now it is also under fire for contributing to climate change. Recent films like “Food, Inc.” and “Fresh” and books such as Jonathan Safran Foer’s “Eating Animals” are encouraging people to become vegetarians or to eat less meat to promote the health of people and the planet. I’ll bet the meat industry pushes back hard on this one.
  • Sustainable agriculture: The back-to-the land movement has loads of people buying local food, choosing foods produced under more sustainable conditions and growing their own food. The number of small farms in America increased last year for the first time in a century. Seed companies cannot keep up with the demand. It will be fun to follow what happens with this trend.
  • Genetically modified (GM) foods: My book, “Safe Food,” comes out in a new edition this year, so I am paying especially close attention to debates about GM foods. The FDA’s 1994 decision to prohibit labeling of GM foods continues to haunt the food biotechnology industry. By now, nearly all American soybeans and sugar beets (95 percent) are GM, as is most corn (60 percent). But when the U.S. Department of Agriculture approved GM sugar beets in 2005, it neglected to perform the required environmental impact assessment. On that basis, environmental groups want to ban further planting of GM sugar beets. The dispute is now in the courts.
  • Chemical contaminants: The FDA has yet to release its report on the safety of bisphenol A, the plastic chemical that acts as an endocrine disrupter. Shouldn’t it be banned? The bottling industry says no. Watch for fierce arguments over this one.
  • Salt: Nutrition standards allow 480 mg sodium (the equivalent of more than 1 gram of salt) per serving. A half cup of canned soup provides that much. A whole cup gives you 4 grams and the whole can gives you 8 grams – much more than anyone needs. Nearly 80 percent of salt in American diets comes from processed and restaurant foods. Companies are under pressure to cut down on salt. Will they? Only if they have to.
  • Dietary advice: The new edition of Dietary Guidelines for Americans, which the government publishes every five years, is due this year. What will it say? I can’t wait to find out.

Those are the issues I am tracking these days. My one crystal-ball prediction? We will be hearing a lot more about them this year.

Happy new year!

Aug 27 2009

Hormones in the food supply

The Institute for Agriculture and Trade Policy (IATP) in Minneapolis has a new report out that summarizes research on hormones in the food supply, of which there are many: arsenic growth promoters, recombinant bovine growth hormone, synthetic hormones in packaging (plasticizers, bisphenol A), and industrial contaminants (dioxins, PCBs, etc).  Never has the statement “more research needed” made more sense.  Plenty of uncertainties still remain about how much, if any, harm is caused by these substances, but while waiting for that research, IATP advises: avoid.  How?  Eat low-fat meat and dairy foods (these chemicals are stored in fatty tissues) and organics (these should be free of hormone-like substances or have much less), don’t use plastic containers made with bisphenol A, and get busy on changing policy!

Jul 17 2009

Regulation of bottled water: oops

There is so much wrong with bottled water that it’s hard to know where to begin (read Elizabeth Royte’s Bottlemania, for starters).  But let’s start with the fact that bottled water is the most brilliantly marketed product ever invented.  The companies get it practically free out of a tap and charge you a dollar or more – sometimes a lot more – for a quart or less).  The plastic bottles pollute the environment.  Worst of all, drinking bottled water makes people less apt to be vigilant about protecting public water supplies.

And it isn’t even regulated very well, or so says a report from the Government Accountability Office.  The title says it all: “Bottled water: FDA safety and consumer protections are often less stringent than comparable EPA protections for tap water.”  The report was released in time for congressional hearings on the topic.   Reporters had a lot of fun with the self-interested statements of industry people who testified.

None of this gets into the additional question of bisphenol A and other endocrine disrupters in plastic bottles that are sometimes used for water.  The Canadians are now saying that bisphenol A is safe at amounts commonly used, and so is a California expert committee.  The American Chemistry Council is pleased with these decisions.

Where does that leave us?  Defend tap water!  As for endocrine disrupters, stay tuned but why use bisphenol A when other alternatives are so readily available.

July 24 update: The International Bottled Water Association is suing a maker of steel water bottles for false advertising.  The bottle maker’s ads apparently suggested that plastic water bottles leak synthetic estrogens.   Bisphenol A must be causing serious problems for the bottled water industry, along with all those pesky enviromental concerns.