by Marion Nestle

Search results: antibiotics

Mar 20 2012

Nutritionist’s Notebook: cooking chicken (of all things)

Every Tuesday I answer a question about food or nutrition in NYU’s student newspaper, the Washington Square News.  My deal with the dining editor is that she sends one question a week and I do the best I can with it.  The questions reflect the kinds of things that NYU undergraduates want to know.

This week, the question is about cooking chicken:

Q.  What are the more cheap and healthy ways for students to buy and cook chicken? What are the health differences between chicken breast/legs/etc.?

A.  Let me answer your second question first.  Chicken is a good source of protein and other nutrients.  Most of the nutritional differences between one part and another are too small to bother mentioning.  The one useful difference is that dark meat has a bit more saturated fat and cholesterol than white meat.  Even so, most of the fat in chicken is in the skin.  Worried about fat?  Remove the skin.

The important nutritional differences result from preparation.  If you add fat during preparation, you are also adding calories (fat has 9 calories per gram as compared to 4 for protein or carbohydrate).

The healthiest way to cook chicken is to bake it in the oven or stir fry it with vegetables.  Put the parts in a baking pan, rub some olive oil on them, and surround them with plenty of garlic, lemon, carrots, or whatever you like.  Bake at 350° until brown.

Buy whole chickens so you aren’t paying someone else to cut it up for you.  Cutting a chicken is easy and YouTube has plenty of videos that explain how to do it.

The cheapest chicken is industrially produced, meaning that the chickens are raised in huge flocks indoors under crowded conditions, treated with antibiotics to prevent illness and promote rapid growth, and are ready to slaughter six weeks after hatching. 

If you don’t want to eat chicken raised this way, you should look for birds that were raised free-range without antibiotics and are Certified Organic, kosher, or halal—if you value such things.   You will have to pay more for such meat but it will taste better. 

You will be supporting a food system that is healthier for chickens, people, and the planet.

Jan 3 2012

Musing about organics leads me to the Farm Bill

Sales of organic foods continue to increase at a faster pace than sales of conventional foods.  This alone makes people suspicious of the organic enterprise.

Another reason is confusion about what organic production methods are, exactly.  If you are part of the food movement, you probably want your foods to be organic, local, seasonal, and sustainable.  You might also want them produced by farm workers who have decent wages and living conditions.

Unfortunately, these things do not necessarily go together.

  • Organic means crops grown without artificial pesticides, fertilizers, GMOs, irradiation, or sewage sludge, and animals raised without hormones or antibiotics.  Certified Organic methods follow specific rules established by USDA.
  • Local means foods grown or raised within a given radius that can range from a few to hundreds of miles (you have to ask).
  • Seasonal refers to food plants eaten when they are ripe (and not preserved or transported from where they were grown).
  • Sustainable means—at least by some definitions—that the nutrients removed from the soil by growing plants are replenished without artificial inputs.

That these are different is illustrated by a recent article in the New York Times about industrial organic production in Mexico.  The story makes it clear that organics do not have to be local, seasonal, sustainable, or produced by well paid workers.

While the original organic ideal was to eat only local, seasonal produce, shoppers who buy their organics at supermarkets, from Whole Foods to Walmart, expect to find tomatoes in December and are very sensitive to price. Both factors stoke the demand for imports.

Few areas in the United States can farm organic produce in the winter without resorting to energy-guzzling hothouses. In addition, American labor costs are high. Day laborers who come to pick tomatoes in this part of Baja make about $10 a day, nearly twice the local minimum wage. Tomato pickers in Florida may earn $80 a day in high season.

The cost issues are critical.  Dairy farms in general, and organic dairy farms in particular, are entirely dependent on the cost of feed for their animals, and the cost of organic feed has become almost prohibitively expensive.  This has caused organic dairy producers to cut back on production or go out of business.  As another New York Times article explains,

The main reason for the shortage is that the cost of organic grain and hay to feed cows has gone up sharply while the price that farmers receive for their milk has not.

While the shortage may be frustrating for consumers, it reveals a bitter truth for organic dairy farmers, who say they simply need to be paid more for their milk.

Why is the price of feed rising?  Simple answer: because 40% of feed corn grown in the United States is being used to produce biofuels.

Why do farmers grow corn for biofuels?  Because the government gives them tax credits and other subsidies to do so.

But in a small step in the right direction, the ethanol tax credit program was allowed to expire last week,”ending an era in which the federal government provided more than $20 billion in subsidies for use of the product.”

One person quoted in the article connected the dots:

Production of ethanol, with its use of pesticides and fertilizer and heavy industrial machinery, causes soil erosion and air and water pollution. And it means that less land is available for growing food, so food prices go up.

Organics do not exist in isolation.  Their production is connected to every other aspect of the food system.

Wouldn’t it be nice to have a food system that promoted organic, local, seasonal, sustainable agriculture and paid farm workers a living wage?

Wouldn’t it be nice if the 2012 Farm Bill supported that kind of a food system if not instead of than at least along side of the one we have now?

I will be watching to see what Congress does with the Farm Bill.  Stay tuned.

Dec 29 2011

Food safety: it’s déjà vu all over again

In preparation for the holiday season, Secretary of Health and Human Services Kathleen Sebelius and Agriculture Secretary Thomas Vilsack held a press conference  to promote the departments’ efforts on food safety.

They announced release of the administration’s progress report from its Food Safety Working Group.

They also highlighted additional places to get government information about food safety at home:

I didn’t pay much attention to these announcements until I read the slightly snarky account in Food Chemical News (December 22). 

The Obama administration patted itself on the back today with a new report that both lists the accomplishments over the past three years of its Food Safety Working Group (FSWG) and identifies the group’s top priorities for the coming year.

Released just minutes before a short media call that served as more of a pep rally, The Federal Food Safety Working Group Progress Report, a 31-page document, summarizes for stakeholders a host of activities that have taken place at government agencies over the past three years related to detecting foodborne pathogens, enhancing surveillance, responding to food safety problems, improving food safety at the retail level and educating consumers.

The list of the administration’s food safety accomplishments is long and detailed, and many are impressive.

But what the report does not say is telling.  Neither the USDA nor FDA have the resources or power to require the industries they supposedly regulate to produce safe food.

As Mark Bittman explains in his Opinionator column in the New York Times, politics defeats even the most rational and thoroughly science-based safety measures, leaving the FDA unable to do much more than politely request “voluntary guidance” of industry.

Bittman focuses on the political barriers to doing what the FDA has been asking for since 1977:  a ban on the use of antibiotics for non-therapeutic purposes, in this case to make food animals grow faster.   The result: “Bacteria 1, FDA 0.”

Here’s the nut: The F.D.A. has no money to spare, but the corporations that control the food industry have all they need, along with the political power it buys.

That’s why we can say this without equivocation: public health, the quality of our food, and animal welfare  are all sacrificed to the profits that can be made by raising animals in factories….Animals move from farm to refrigerator case in record time; banning prophylactic drugs would slow this process down, and with it the meat industry’s rate of profit.

Lawmakers beholden to corporate money are not about to let that happen, at least not without a fight.

For more than 20 years, the Government Accountability Office has called for creation of a single food safety agency that unites the safety oversight functions of the FDA and USDA and has the authority to require food to be produced safely.

In this Congress?  Hopeless.

But Congress can be changed—and that’s a worthy thought for the new year.

 

 

Nov 8 2011

Food politics semantics: the meaning of “natural”

Are you puzzled, annoyed, or irritated beyond belief by the word “natural” on food product labels?

FoodNavigator must think so.  It conducted an opinion survey on what to do about marketing foods as “natural”.

FoodNavigator asked: Do we [food companies] need a clearer definition of ‘natural’ for food marketing?

The response options:

  • Yes. The FDA should come up with a formal definition (63% checked this one)
  • Yes. The industry should develop voluntary guidance (20%)
  • No. The FDA’s 1993 guidance is sufficient (~1%)
  • No. The term is meaningless and manufacturers should stop using it (16%)

Hello FDA.  How about it?

The FDA has never defined “natural” for labeling purposes.  But it does have an answer to the question “what is the meaning of ‘natural’ on the label of a food,” one that requires self-cancelling nots (my emphasis):

From a food science perspective, it is difficult to define a food product that is ‘natural’ because the food has probably been processed and is no longer the product of the earth.

That said, FDA has not developed a definition for use of the term natural or its derivatives. However, the agency has not objected to the use of the term if the food does not contain added color, artificial flavors, or synthetic substances.

By this non-definition, High Fructose Corn Syrup is “natural” even though to make it, corn refiners must extract the starch from corn, treat the starch with an enzyme to break it into glucose, and treat the glucose with another enzyme to turn about half of it into fructose.

This is “natural,” according to the FDA, because the enzymes are fixed to a column, do not actually mix with the starch, and HFCS does not contain added colors or flavors.

In contrast, the USDA is way ahead and has defined what “natural” means for meat and poultry products.  “Naturally raised” means  no growth promoters, antibiotics, animal by-products, or fish by-products.

The USDA says meat and poultry products can be labeled “natural” if they are only minimally processed and don’t have any artificial flavorings, colorings, preservatives, or other additives.

As I’ve discussed previously, Horizon Organics now has “natural” milk that does not meet standards for organic certification.  It must hope that consumers can’t tell the difference.

To do something about this confusing situation, FoodNavigator reports that  the Natural Products Association (NPA) is developing standards for use of the word “natural” in food marketing.  This will be similar to the NPA’s Natural Seal Certification for personal home-care products.  NPA is doing this to “give consumers confidence that foods featuring the seal adhere to clear set of standards.”

NPA has not yet worked out the details but says some ingredients are unlikely to qualify:  those extracted with organic solvents, modified starch, high fructose corn syrup, and partially hydrogenated vegetable oils.

Oops.  What about GMOs?  NPA hasn’t decided yet, mainly because it is so hard to find soy products that are not GMO.

This situation is a mess and runs the risk of undercutting organic standards.  And we hardly need another certification system.

It’s time for the FDA to step in and give the food industry—and the public—some guidance about what counts as “natural” and what does not.

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Jun 27 2011

Perdue’s chickens: “USDA Process-Verified”?

When New York Times reporter Stuart Elliott called to ask about the USDA’s process verification for Perdue chickens, I had to confess that I had never heard of it.

 

I had no idea that USDA sponsored a program to certify poultry producers’ claims like Perdue’s:

  • All Vegetarian Diet
  • No Animal By-Products
  • Humanely Raised 1/
  • Raised Cage Free
  • Tenderness Guaranteed 2/(I discuss the footnotes below)

The USDA does indeed have a process verification program.

This  is not, as you might expect, an inspection program to make sure that food producers are doing what they claim.  No, USDA’s Process Verification is a marketing program that allows producers to make claims and create certification logos.

As I discussed in the egg chapters in What to Eat, process verification is very much in the eye of the beholder.  Most egg—and broiler—process verification programs certify that the chickens are fed and sheltered.  How, is quite another matter.

Perdue’s claims are marketing hype because broilers are pretty much always fed grain, are not routinely fed animal by-products, and  are not raised in cages.  The claims say nothing about antibiotics so you have to assume these chickens are treated with antibiotics to promote growth and prevent infection under crowded conditions.* see correction below

And now the footnotes:

*1/ Humanely Raised Program claim is in accordance with Perdue’s Best Practices, which include:

  • Education, training, and planning
  • Hatchery Operations
  • Proper Nutrition and Feeding
  • Appropriate Comfort and Shelter
  • Health Care
  • Normal Patterns of Behavior
  • On-Farm Best Practices
  • Catching and Transportation
  • Processing

*Based on the principles outlined in Official Listing of Approved USDA Process Verified Programs Company Claims Verified Program Scope Verification Information in the National Chicken Council’s Animal Welfare Guidelines to ensure the proper care, management, and handling of broiler chickens.

2/ Tenderness is Guaranteed through the implementation and verification of Perdue’s “Tenderness Best Practices”.

The guidelines require careful reading.  “Humanely raised” by Perdue’s criteria might not be what you mean by the term.

This campaign is not about safety, health, or humane treatment.  It is about marketing.

As I explained to Stuart Elliott, it’s hard not to be sarcastic about this sort of thing.  And to wonder why the USDA needs to do this.

*Correction July 5, 2011:  An official of Perdue points out that many chicken producers feed animal by-products to the birds but his company decided not to do that some time ago because it could not verify what went into the by-products.  He also points out that the company cannot claim that the birds are raised without antibiotics because they have to use a particular kind of antibiotic—not one used in humans—to deal with coccidiosis.   Perdue, he explains, is a family-owned company trying hard to do this right (family-owned companies are not subject to Wall Street pressures to grow profits every 90 days).  I haven’t visited a Perdue farm so I have no first-hand experience, but I’m inclined to take what he told me at face value.

 

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Jun 13 2011

The FDA’s excellent move on arsenic drugs in chickens

For years, as Tom Philpott recounts on his new food and agriculture blog for Mother Jones, public health advocates have fretted about the use of arsenic-containing drugs to kill intestinal parasites and promote growth in chickens.

One such drug is roxarsone, made by Pfizer. Its arsenic is in the organic (carbon-containing) form, which is less toxic than the inorganic form.

But, as the New York Times explained, evidence has been accumulating that the organic form can change into the more toxic, inorganic form, a known carcinogen.

As reported in Food Safety News,  the Center for Food Safety, the Institute for Agriculture and Trade Policy, and several other consumer and agriculture groups petitioned FDA to ban the drug three years ago.

Last week, the FDA announced that the agency had done its own feeding tests.  Chickens fed organic roxarsone had higher levels of inorganic arsenic in their tissues.  The FDA got Pfizer to “voluntarily” withdraw the drug from the market.

The surprise here is not the FDA’s delay in dealing with this drug.  The big surprise is that the FDA did its own testing.  As the Times put it:

The F.D.A. once routinely conducted its own studies of animal and human drugs, but limited budgets led the agency to eliminate much of its scientific and laboratory capacity over the years. The roxarsone study is a triumph for agency scientists but one unlikely to be repeated very often. The agency asked for $183 million in additional funds for food safety efforts next year, but House Republicans have instead proposed cutting $87 million.

Drug companies cannot be expected to do their own testing if there is any chance that the tests will show something not in their best interest.  If independent federal agencies don’t do these kinds of studies, who will?

I can remember when the FDA housed a group of researchers doing outstanding work on food allergies in the 1990s.  The FDA closed down that lab when it was given additional responsibilities by Congress with no additional funding.

The FDA is a public health agency.  Its job is to protect the public against unsafe food contaminated with bacteria or antibiotics such as roxarsone.  The agency gets high marks for taking this on.  And Congress needs to support the FDA’s research mission.

 

Jun 2 2011

Deconstructing the USDA’s new food plate

I attended the launch of the new food icon this morning, and the press conference following it (which featured Red Rooster chef Marcus Samuelson).

 

 

 

 

 

 

 

 

 

As USDA Secretary Tom Vilsack explained, we have an obesity crisis in America that imperils our nation’s national security, economic vitality, and health care system.  It’s time for action.

I got a preview of the design on a conference call last week (while I was in Spain) and took a screen shot:

 

 

 

 

 

 

 

 

 

 

 

 

This may not look much like action, but it is a sharp departure from previous USDA icons (which USDA has delightfully put online).   These mostly emphasize the importance of meat and dairy foods (the 1992 Pyramid was an exception, which was why the Bush II USDA got rid of it).

Before yawning, consider its strengths:

  • It is easy to understand (as Mrs. Obama explained, even a child can use it).
  • Vegetables comprise the largest sector.
  • Together, vegetables and fruits are half the plate.
  • You can put whatever foods you like on that plate.
  • You don’t have to count servings or worry about portion size (if the plate isn’t too big).
  • Dairy foods–a discretionary group–are off to the side.

My one quibble?  Protein.  I’m a nutritionist.  Protein is a nutrient, not a food.  Protein is not exactly lacking in American diets.  The average American consumes twice the protein needed.  Grains and dairy, each with its own sector, are important sources of protein in American diets.

Why protein?  USDA used to call the group “meat” even though it contained beans, poultry, and fish.  The meat industry ought to be happy about “protein.”  Meat producers have spent years trying to convince Americans to equate meat with protein.

And USDA says its consumer testing (as yet unpublished) indicated that the public understood “protein” to cover diverse food sources.

According to William Neuman’s report in the New York Times, USDA official Robert C. Post said that:

U.S.D.A. had spent about $2 million to develop and promote the logo, including conducting research and focus groups and creating a Web site. Some of that money will also be used for the first year of a campaign to publicize the image.

I would like to see that research.  Post told me that the research would be published on the website within the next few days.  I look forward to seeing it.

One other point: consider the alternative.  Just for fun, here’s the plate the USDA was considering in its last efforts to try to get rid of the Pyramid in 1991.  We have Marian Burros, then at the New York Times, to thank for rescuing the Pyramid that came out in 1992.

 

 

 

 

 

 

 

 

 

 

The next step, of course, is to bring agricultural policy in line with the plate, meaning doing a much better job of supporting producers of vegetables and fruits.  This is part of Secretary Vilsack’s plan for repopulating and revitalizing rural America—a goal that I strongly support.

Given the pushback against public health that is happening in Congress this week—Cut school lunches! Cut WIC! Get rid of nutrition recommendations! Go easy on tobacco and antibiotics!—the more I think it took courage for USDA to do this.

Let’s hope USDA can stand up to the heat.

 

 

 

Apr 19 2011

The politics of contaminated meat

By this time, you must have heard about the study in Clinical Infectious Diseases sponsored by the Pew Charitable Trusts.  The study found nearly half of supermarket meat and poultry samples to be contaminated with Staphylococcus aureus. Half of the contaminated samples were resistant to multiple antibiotics.

Staph causes awful infections.  When I was a child, my mother had a Staph infection that kept her out of commission for what seemed like months in that pre-antibiotic era.  Antibiotics can keep Staph under control, but not if the Staph are antibiotic-resistant.   Staph resistant to multiple drugs are a clear-and-present danger.  No wonder this study got so much attention.

The study provides strong support for the idea that we ought to be reducing use of antibiotics as growth promoters in farm animals, an idea strongly supported by the CDC.

Even though 80% of U.S. antibiotic use is for farm animals, the meat industry strong opposes any proposal to change its practices.

The National Cattleman’s Beef Association responds by attacking the science:

Calling into question the safety of U.S. beef without conclusive scientific evidence is careless and misleads consumers. Pew Charitable Trusts, an agenda-driven organization on this issue, funded this study, which concludes that its extremely small sample size was ‘insufficient to accurately estimate prevalence rates’ and that ‘public health relevance of this finding is unclear.’ The study’s authors clearly call into question the validity of their own study. The bottom-line is U.S. beef is safe and is part of a healthy, well-balanced diet.

The American Meat Institute reassures the public that meat is safe.  After all, you are going to cook your meat, aren’t you?  In any case, the responsibility rests with you.

While the study claims that the many of the bacteria found were antibiotic resistant, it does note that they are not heat resistant.  These bacteria are destroyed through normal cooking procedures, which may account for the small percentage of foodborne illnesses linked to these bacteria.

As with any raw agricultural product, it is important to follow federal safe handling recommendations included on every meat and poultry package that urge consumers to wash hands and surfaces when handling raw meat and poultry and to separate raw from cooked foods to ensure that food is safe when served.

These sound like the arguments that the meat industry has made for years for Salmonella and E. coli O157:H7.

I see this study as another reason why we need better food safety regulation, and the sooner the better.

Postscript: Bill Marler reports that he had 100 samples of chicken tested from Seattle markets:

IEH Labs found S. aurea [sic], or staph, in 42 percent of the samples overall and Campylobacter in 65 percent. The supermarket chicken was contaminated with other pathogens as well: 19 percent of the samples tested positive for Salmonella, one tested positive for Listeria, and 10 percent showed the presence of the methicillin-resistant S. aureus (MRSA). In an unusual finding, one of the chicken samples tested positive for E. coli 0126, Shiga-toxin producing E. coli (STEC) bacteria more likely to be a contaminant of beef than poultry. Organic Chicken proved to be slightly less contaminated than nonorganic with 7 of the 13 (54%) testing positive for harmful bacteria.

As I said….