Sandor Ellix Katz, The Art of Fermentation: An In-Depth Exploration of Essential Concepts and Processes from Around the World, Chelsea Green, 2012.
This is a big book—498 pages—packed full of anything you’d want to know about fermented foods, not only as something healthful we seem to have evolved with, but also as something delicious to eat and drink. Think: cheese, yogurt, sourdough, beer, kimchi, and soy sauce, but also such exotica as kombucha candy or cod liver oil. The book’s coverage is international, the directions explicit (equipment, gear, troubleshooting), and the design beautiful. Michael Pollan’s introduction says he found it inspirational. Me too.
Peter Kaminsky, Culinary Intelligence: The Art of Eating Healthy (and Really Well), Knopf, 2012.
I blurbed this one:
Kaminsky’s rules for taking pounds off and keeping them off are based on a really good idea: Flavor per Calorie. That works for him and should make dieting a pleasure.
You can eat well and healthfully and everywhere if you apply your inborn Culinary Intelligence. Kaminsky says the CI story can be summarized in ten words: Buy the best ingredients you can afford. Cook them well.
Can’t beat that.
Seamus Mullen, Hero Food: How Cooking with Delicious Things Can Make Us Feel Better, Andrews McNeel, 2012.
I don’t usually blurb cookbooks, but it wasn’t hard to talk me into doing this one.
Take a look at what Seamus Mullen does with vegetables, fruit, grains and everything else he cooks. I can’t wait to try his 10 Things to Do with Corn. His food can’t guarantee health, but it will surely make anyone happy.
This gorgeous book proves without a doubt the point I’ve been making for years: healthy food is delicious!
Mullen cooks Spanish food at Tertulia, Manhattan. The food is delicious (but bring ear plugs!).
I’ve been asked to comment on the HBO series, Weight of the Nation and everything that comes with it: the accompanying book, the auxiliary videos, the distribution plan to schools and other institutions, and the Institute of Medicine’s report, Accelerating Progress in Obesity Prevention.
Because I wanted to look at all of it before commenting, plenty of others have beaten me to it, among them FoodandTechConnect’s infographic summary, Kerry Trueman on AlterNet and Michele Simon on Grist.
I don’t have HBO but got sent the press kit, the Weight of the Nation book, the disks, and the IOM report. I watched all four hours of the HBO series, plus the “Rethinkers” video of kids working on a school lunch project in New Orleans (air dates), plus the IOM and HBO books, plus the website.
Overall, Weight of the Nation makes the size, scope, causes, and consequences of obesity alarmingly clear.
The talking heads—many of them my friends, colleagues, and former students—all had plenty to say about what obesity means on a day-to-day basis for individuals and its personal and economic cost to society.
The programs ought to convince anyone that obesity is a big problem and that something big needs to be done to prevent it.
But doing something big, the series makes clear, will be very difficult.
This may be realistic, but it is not inspiring.
We need inspiration. That’s why I wish the programs had focused as much on social responsibility as they did on personal responsibility.
I wanted to see the programs take leadership on how government can help citizens reduce the social, economic, and business drivers of obesity.
That kind of leadership exists. To see it in action, watch the video of the New Orleans school “rethinkers.” Those kids wanted to improve their school lunches. They got busy, dealt with setbacks, and learned how to make the system work for them. They “spoke truth to power” and “held feet to the fire.”
Why aren’t adults doing the same? Politics, the IOM report explains. Although one of its principal recommendations is critical—Create food and beverage environments that ensure that healthy food and beverage options are the routine, easy choice—its recommendations speak some truth to power but do little to hold feet to the fire.
The IOM report explains the political realities:
The committee’s vision takes into account the need for strategies to be realistic, as well as consistent with fundamental values and principles. At the same time, however, having a diversity of values and priorities among them is itself a principle of U.S. society.
Potentially competing values and principles must be reconciled, for example, in considering protections needed for individuals versus the community at large or for the public versus the private sector.
Vigilance regarding unintended adverse effects of changes undertaken to address the obesity epidemic is also needed.
“Americans,” the report says, are accustomed to the current obesogenic environment, one “driven by powerful economic and social forces that cannot easily be redirected.”
It may not be easy to redirect such forces, but shouldn’t we be trying?
In 1968 the CBS documentary Hunger in America galvanized the nation to take action to reduce poverty and malnutrition.
The HBO series was equally shocking but I wish it had focused more on how we—as a society—could mobilize public distress about the poor quality of food in schools and the relentless and misleading marketing of sodas and junk foods that it so well documented.
But dealing with the need to address the social and economic forces that promote obesity would, I’m told, be considered lobbying, which the private-public sponsors of the series are not permitted to do.
Mobilizing public support for health is considered lobbying. Food industry marketing is not.
FoodNavigator-USA.com columnist Caroline Scott-Thomas wrote about the HBO series:
As an industry journalist, I’ll be among the first to admit that industry is stuck in a very hard position here: On the one hand, it wants to be seen to be doing the right things – but on the other, what people say they want to eat, and what they actually do eat are often very different, and after all, food companies are in the business of making money.
But honestly, could industry do more to make healthy choices routine, easy choices? I think so.
Yes it could, but won’t unless forced to.
Without leadership, we are stuck doing what the food industry needs, not what the public needs.
Weight of the Nation did an impressive and compelling job of defining the problem and its causes and consequences. I wish it—and the IOM—could have risen above the politics and pressed harder for strategies that might help people make healthier choices.
But—if the HBO programs really do help mobilize viewers to become a political force for obesity prevention, they will have been well worth the effort that went into making and watching them.
In response to my post on tuna scrape, Professor Alan Reilly, Chief Executive, Food Safety Authority of Ireland (the equivalent of our FDA) sent this photograph of an actual tuna scrape label.
After I forwarded it to Bill Marler, he noticed that it is one of several photographs posted on the FDA’s tuna scrape recall web page).
The type is too small to read so I’ve done some cropping:
Professor Reilly asks:
What is puzzling me is why this product “minced tuna” was used in sushi products. The label (copy attached) clearly states that the product must be cooked before consumption and it is for industrial uses only (labelled not for retail).
Those are good questions, but here’s another, equally alarming. What’s that strangely formatted Nutrition Facts label? It does not precisely follow FDA design or content requirements.
This is a red flag. If the company is not following labeling rules, it might not be following other rules either—safety, for example.
Safety? Uh oh.
Bill Marler reports that the FDA “483 Inspection Report” on the Indian tuna processing facility is now available. Read these quotes and shudder:
I draw several lessons from this episode:
All of this means that we need a better food safety system, one that can address the enormous proportion of our food supply that comes to us from countries with weaker food safety standards.
Addition, May 17: Ben Embarek, a food safety scientist at the World Health Organization notes that the 483 report reveals that Moon’s HACCP plan did not list appropriate critical control points. Anyone auditing the plan should have picked up the problems on paper, which is easier and less expensive to do than an on-site inspection. But the FDA does not pre-audit international HACCP plans. They are supposed to be cleared by exporting companies registered by FDA. Comment: it’s hard to imagine that the current system can work, and it clearly does not.
While Weight of the Nation is airing on HBO this week (I’ll comment on it after it’s fully aired), here’s what happens when public health officials try to do something to make it easier for kids to eat more healthfully.
The Massachusetts public health department came up with a proposal to ban bake sales in public schools 30 minutes before, during and after classes.
The reaction? An uproar. The ban, according to critics, would
Under this kind of pressure, “the governor spoke, emergency orders were issued, and the Legislature voted.”
End of ban.
Massachusetts public health commissioner John Auerbach pointed out:
The school nutrition standards have always been about reducing childhood obesity in Massachusetts and protecting our kids from the serious long-term health impacts that obesity can cause…At the direction of Governor Patrick, the department will seek to remove these provisions.
We hope to return the focus to how we can work together to make our schools healthy environments in which our children can thrive.
Best of luck.
This reminds me of what happened in Texas, when Susan Combs, then state agriculture director, attempted to ban cupcakes from public schools.
As Dr. Cathy Isoldi described in her study of school celebrations earlier this year (on which I am a co-author),
Such bans have prompted intense opposition in many areas of the country. In Texas in 2005, a ban on food service during classroom celebrations elicited parent outrage and resulted in the addition of a Safe Cupcake Amendment to the state’s nutrition policy. The amendment, known as Lauren’s Law, ensures that parents and grandparents of schoolchildren celebrating a birthday can bring in whatever food items they choose for classroom celebrations.
Cathy’s work makes it clear that school celebrations alone can account for a whopping 20% to 35% of a child’s daily calorie needs. This percentage does not account for additional treats sent home with children, given to them by teachers as rewards, or purchased in school at bake sales.
You don’t see an occasional cupcake as a problem? Read Bettina Siegel’s post on what goes on in her kids’ school and how often schoolkids are exposed to junk foods during the school day.
Of course kids will eat treats rather than healthier foods if given half a chance. Isn’t it an adult responsibility—at home and at school—to make sure that kids eat healthfully?
The environment of many schools is anything but conducive to good health practices. While outright bans may be seen as going too far, some kind of restriction on junk food in schools seems like a sensible adult decision, given the impact of obesity on children, families, and the health care system so well documented in Weight of the Nation.
State legislatures should be promoting such efforts, not overturning them.
I was a member of the FDA Food Advisory Committee when the agency approved production of genetically modified foods in the early 1990s.
At the time, critics repeatedly warned that widespread planting of GM crops modified to resist Monsanto’s weed-killer, Roundup, were highly likely to select for “superweeds” that could withstand treatment with Roundup.
I wrote about this problem in Safe Food: The Politics of Food Safety. I added this update to the 2010 edition:
Late in 2004, weeds resistant to Monsanto’s herbicide Roundup began appearing in GM plantings in Georgia and soon spread to other Southern states. By 2009, more than one hundred thousand acres in Georgia were infested with Roundup-resistant pigweed. Planters were advised to apply multiple herbicides, thereby defeating the point of Roundup: to reduce chemical applications.
Today, the idea that planting of GM crops is “widespread” is an understatement.
So, according to Reuters, is Roundup resistance.
Weed resistance has spread to more than 12 million U.S. acres and primarily afflicts key agricultural areas in the U.S. Southeast and the corn and soybean growing areas of the Midwest.
Many of the worst weeds, some of which grow more than six feet and can sharply reduce crop yields, have become resistant to the popular glyphosate-based weed-killer Roundup, as well as other common herbicides.
This is not a trivial problem. As the Ottawa Citizen explains,
The resilience of nature is evident across almost five million hectares of superweed-infested U.S. farmland. Some runaway weeds in the southern U.S. are said to be big enough to stop combines dead in their tracks.
How is the chemical industry responding to this threat? Zap it harder!
The industry is pressing the U.S. and Canadian governments to approve GM corn engineered to resist 2,4-D.
Remember 2,4-D? It was the principal ingredient in Agent Orange, the defoliant used during the Vietnam War. Although the health problems it caused have been attributed to contamination with dioxin, the uncontaminated chemical has also been associated with illness in some studies (the Wikipedia entry has references).
The chemical industry maintains that 2,4-D is safe at current usage levels. Maybe, but Ontario bans its use on lawns, gardens, and in school yards and parks. Weeds resistant to 2,4-D have been identified since the 1950s.
Is pouring more toxic herbicides on food crops a good idea? These chemicals cannot be healthy for farmworkers or for soil or groundwater.
Organic agriculture anyone?
Addition: Fred Kirschenmann, Distinguished Fellow at the Leopold Center at Iowa State and organic farmer says in an e-mail:
The other issue that has weed scientists concerned is the fact that 2-4-D is known to be much more invasive than many other herbicides—it can drift in the air for long periods of time and land on many unintended crops.
2-4-D has been identified as the main cause for destroying the grape industry in Iowa—in the 1940′s Iowa was the 4th largest grape producing state in the nation, and then was virtually reduced to zero.
Clearly if 2-4-D is going to be the “answer” to Roundup Ready resistance it will now be used in much larger quantities than in the 1950′s and is not only likely to destroy the rebounding grape production (I think some 200 acres now) and the 8 wineries in Iowa, but will make it extremely difficult to grow vegetables, which will not be good news for the burgeoning CSA/farmers Market industry that has emerged in recent years.
I was riveted by an article in today’s New York Times about the latest decision of an FDA drug advisory panel.
The panel voted to approve a new weight-loss drug, lorcaserin. The vote was mixed: 18 for approval, 4 against, and 1 abstention. The majority felt that the benefits outweighed the risks and that even if there were risks, “new tools are needed to treat a major health problem.”
The benefits are worth a look.
What about the risks? The drug:
Also in the Times is a piece by Dr. Danielle Ofri on her experience with patients who want weight-loss drugs.
She quotes from an essay called “Lemons for Obesity” by Dr. Michael S. Lauer, who was a minority voter on the FDA panel that approved the weight-loss drug Qnexa earlier this year.
The weight-loss field is strewn with lemons, more so than other areas of medicine, Dr. Lauer argues. Because of the enormous potential market for these drugs — two-thirds of American adults are overweight or obese — pharmaceutical companies rush new drugs to market after conducting only small clinical trials. The F.D.A. and doctors are complicit in the process, Dr. Lauer says, leaving the population at large to act essentially as guinea pigs.
Shares of the maker of the drug nearly doubled after the decision. The Times reported that “Arguments by investors have been passionate.”
People who cannot easily lose weight are desperate for help.
But is it ethical to put them at this kind of risk?
The Government Accountability Office is complaining again about the inadequacies of the American food safety system, and with good reason.
Its 2012 Annual Report, Opportunities to Reduce Duplication, Overlap and Fragmentation, Achieve Savings, and Enhance Revenue, says that the food safety system is:
fragmented and results in inconsistent oversight, ineffective coordination, and inefficient use of resources.
In 2007, GAO added food safety to its list of high-risk areas that warrant attention by Congress and the executive branch.
More recently GAO found that this fragmentation extends to the responsibilities across multiple agencies to defend food and agricultural systems against terrorist attacks and natural disasters…Many of these activities are everyday functions or part of the broader food and agriculture defense initiative and would be difficult for the agencies to separately quantify.
This report repeats what the GAO has been saying since the early 1990s:
there is no centralized coordination to oversee the federal government’s overall progress in implementing the nation’s food and agriculture defense policy.
Because the responsibilities outlined in this policy (HSPD-9) are fragmented and cut across at least nine different agencies, centralized oversight is important to ensure that efforts are coordinated to overcome this fragmentation, efficiently use scarce funds, and promote the overall effectiveness of the federal government.
Reminder: the present food safety system is mainly divided between two agencies: USDA (meat and poultry) and FDA (everything else).
Centralized oversight of food safety? What a concept.
The FDA has just released a classy new report on Global Engagement, summarizing its efforts to deal with issues raised by the globalization of drugs, medical devices, and foods.
This is a big deal. In 2009, 300,000 foreign facilities in more than 150 countries exported $2 trillion worth of FDA-regulated products to the United States.
Given these numbers alone, the FDA has some challenges.
In 2011, one out of every six FDA-regulated food products in the U.S. came from abroad. Imports of fresh fruits, vegetables, coffee, tea, and cocoa have more than doubled since 2000.
We import:
As the report explains,
To deal with this problem, the FDA has opened offices in:
The FDA seems seriously concerned about its global initiatives and the safety problems posed by our globalized food supply.
The volume seems impossible to manage. Let’s hope the FDA’s efforts do some good.
A reader writes:
Here’s what I don’t understand.
Everyone who is scared of raw says they want their dog’s food to be cooked, to kill salmonella.
But here is kibble, which by definition is cooked to the point of losing most of its original nutrients, but STILL has salmonella.
I don’t see how this is possible. If it’s cooked enough to be “kibbled,” how can it possibly still have salmonella? It just seems like the worst of all possible worlds.
This question refers to the recent recall of dry dog food manufactured by Diamond Pet Foods.
As the CDC explains, Michigan public health officials found Salmonella in an unopened bag of a Diamond kibble product during routine testing. This particular Salmonella strain had been found to infect at least 14 people.
CDC investigators connected the dots between the illnesses and dog food through interviews:
Seven of 10 (70%) ill persons interviewed reported contact with a dog in the week before becoming ill.
Of 5 ill persons who could recall the type of dog food with which they had contact, 4 (80%) identified dry dog food produced by Diamond Pet Foods that may have been produced at a single facility in South Carolina.
In my book, Pet Food Politics: The Chihuahua in the Coal Mine, I tell the story of the massive pet food recalls of 2007 due to contamination with the industrial chemical, melamine. And in Feed Your Pet Right, my co-authored book about the pet food industry, I explain how pet foods are manufactured and why they are so subject to contamination and recall.
Canned pet foods are sterile. Dry kibble is not. It may be sterile at the point of extrusion, but it is a perfect growth medium for bacteria. It is nutritionally complete. Although some nutrients are lost during processing, the product formulas compensate for such losses. That is why dogs can survive on “complete and balanced” dry foods.
If the factory is contaminated with Salmonella, the bacteria can fall into the production lines and get packaged into the kibble bags.
Dogs are relatively resistant to Salmonella and usually do not show signs of illness from eating contaminated kibble.
But humans who handle the food or the dog can acquire the bacteria and get sick.
This makes dry dog food a potentially hazardous product, one best kept away from people with weak immune systems such as young children and the elderly.
People like feeding dry food to pets because it is convenient and cheap.
My point in Pet Food Politics was that pet food is an indicator of problems in food safety regulation. If pet foods are not forced to be produced under strict food safety measures, humans and the human food supply are also at risk.
Resources
My Q and A column in the San Francisco Chronicle appears on the first Sunday of every month. This one is about safety problems with tuna scrape.
Q: I had no idea that the tuna in my sushi roll was scraped off the bones in India, ground up, frozen, and shipped to California. Is this another “slime” product? Can I eat it raw?
A: No sooner did the furor over lean, finely textured beef (a.k.a. “pink slime”) die down than we have another one over sushi tuna. On April 13, the Food and Drug Administration said Moon Marine USA, an importing company based in Cupertino, was voluntarily recalling 30 tons of frozen raw ground yellowfin tuna, packaged as Nakaochi scrape.
Centers for Disease Control and Prevention investigations linked consumption of Nakaochi scrape sushi to about 250 diagnosed cases and an estimated 6,000 or so undiagnosed cases of illness caused by two rare strains of salmonella. Among the victims who were interviewed, more than 80 percent said they ate spicy tuna sushi rolls purchased in grocery stores or restaurants.
Scrape refers to the meat left on fish skeletons after the filets are cut off. This is perfectly good fish, but difficult to get at. I once visited an Alaskan salmon packing plant and asked what happened to the delicious looking meat between the bones. The answer: pet food. (Lucky cats.)
A hot commodity
But tuna is too valuable to leave behind, and companies in India use special devices to scoop out the meat, combine it with scrapings from many other fish, chop the mixture, freeze it in blocks, and ship it to importers in the United States. Unlike “pink slime,” tuna scrape is not treated with ammonia or anything else to kill harmful bacteria.
Nevertheless, it is supposed to be safe. The FDA requires producers of imported foods to follow established safety plans. Although the United States imports about 80 percent of seafood sold domestically, the FDA only inspects 1 or 2 percent.
This means we have to rely on the diligence of international food producers in following safe-handling procedures, and of U.S. importers in verifying safety through pathogen testing. But even well-intentioned producers can make safety errors, especially when dealing with high-risk foods.
Tuna scrape is very high risk. Its supply chain is long, complicated and international, leaving many opportunities for contamination. And it is eaten raw.
This tuna scrape came from a single processing plant in India owned by Moon Marine International of Taiwan. Tuna are plentiful off the Indian coast, and the tuna processing industry is expanding rapidly. India has dozens, perhaps hundreds, of fish processing facilities, but most are relatively small and their number, size and geographical dispersion make monitoring difficult.
Safe handling issues
The frozen scrape blocks are supposed to be held at subzero temperatures throughout shipping. Even so, they pose a safety risk. They combine the scrapings from many fish. One contaminated scraping can contaminate the entire lot.
And subzero freezing may kill some salmonella, but large fractions can survive, remain viable, and multiply when the blocks are thawed.
Once the tuna scrape arrived in America, I’m guessing it was trucked to Cupertino and from there to retailers and distributors who further trucked them to restaurants and grocery stores. There, sushi chefs thawed the scrape and used it to make spicy tuna rolls.
Tuna scrape is used in supermarket-grade sushi, not the fancy stuff. Sushi used to be – and still is, in places – an art form requiring exceptional skills. In Japan, sushi chefs can train for as many as 10 years to learn how to recognize the freshest, safest and most delicious fish. Sushi served by such chefs is made to order. It is never pre-prepared. It can be breathtakingly expensive.
But in America, sushi has gone mainstream. You can find prepackaged sushi rolls at practically any supermarket or convenience store, at a cost equivalent to hamburger.
Cheap sushi is made with cheap ingredients – hence, Nakaochi scrape – by chefs with far less training. A typical certification program for sushi chefs in this country can be completed in two or three months. Some offer certification online. Although these programs address safe food-handling procedures, the training is necessarily superficial.
What are the odds?
Sushi aficionados argue that while raw fish is never perfectly safe, the safety odds are much better when the chef is well trained, and the fish are freshly caught and cut to order in front of you. By their standards, tuna scrape is suitable only for pet food, which is at least cooked to kill pathogens.
If anything, the tuna scrape outbreak teaches why it is so important to know where food comes from and how it is made. Caveat emptor.
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.
Addition, May 14: Bill Marler reports that the FDA “483 Inspection Report” on the Indian tuna processing facility is now available. Here are excerpts from the most revealing section:
Tanks used for storage of process waters have apparent visible debris, filth and microbiological contamination…There is no laboratory analysis for water used in ice manufacturing at the [redacted] facility to show the water used to make ice is potable…Apparent bird feces were observed on the ice manufacturing equipment at Moon Fishery; insects and filth were observed in and on the equipment…Tuna processed at your facility, which is consumed raw or cooked, comes in direct contact with water and ice.
I was honored to give the keynote address to this weekend’s splendid Food Book Fair (for information, travel directions, and schedule, click here).
The Fair features the work of groups listed in the poster. It encompasses an unusually broad vision of food studies in action.
The venue, the Wythe Hotel at 12th street in Brooklyn, is an architectural wonder and worth the trip on its own. It’s just a short walk from the Bedford Street subway stop on the L line.
Check out the schedule. Check out the terrific selection of books at the bookstore–all on food in its many dimensions.
Come!
Paul Kindstedt, Cheese and Culture: A History of Cheese and its Place in Western Civilization, Chelsea Green, 2012.
Kindstedt, a professor of food science at the University of Vermont and co-director of its Institute for Artisan Cheese, has organized his history by time period and region, from the Paleolithic origins of cheese to current attempts to regulate raw milk. His material is well referenced and the book is full of facts and observations that will delight cheese lovers.
Seamus Mullen, Hero Food: How Cooking with Delicious Things Can Make Us Feel Better, Andrews McNeel, 2012.
I don’t usually blurb cookbooks but I couldn’t resist this one from Seamus Mullen, the chef-owner of Tertulia in lower Manhattan.
This gorgeous book proves without a doubt the point I’ve been making for years: healthy food is delicious! Take a look at what Seamus Mullen does with vegetables, fruit, grains and everything else he cooks. I can’t wait to try his 10 Things to Do with Corn. His food can’t guarantee health, but will surely make anyone happy!
Ordinarily I find government plans of this type to be soporific but this one is especially well written and well thought out (with some caveats).
The report is a statement of FDA commitment to what it is going to do in the next four years in food areas that affect people and animals. It includes many promises, among them this one of particular interest:
Program Goal 4: Provide accurate and useful information so consumers can choose a healthier diet and reduce the risk of chronic disease and obesity
Objective 1. Update the Nutrition Facts label.
Objective 2. Implement menu and vending machine labeling regulations.
Objective 3. Improve consumer access to and use of nutrition information.
Goal-setting processes usually include dates by which the objectives are to be completed. These do not, which suggests that the FDA can continue to delay action until 2016.
I also do not understand what is meant by “Explore front‐of‐pack nutrition labeling opportunities.” Explore? The FDA has already sponsored two Institute of Medicine reports on front-of-pack labeling. Does this mean the agency is ignoring them and intends further research?
And “Collaborate with public/private sector parties on nutrition education?” What does the FDA have in mind for the content of such education? You can bet that no collaborative campaign can focus on “don’t drink your calories.”
FDA needs to deliver on these items, and sooner rather than later. This year? I’m not counting on it.
My Tuesday question from student readers of NYU’s Washington Square News:
Question: How can we determine our individual caloric, vitamin, carbohydrates, fats and other intake requirements per day based on our own individual weight, height and lifestyle?
Answer: You can’t. You will have to be satisfied with estimates based on measurements performed years ago on a small number of study subjects.
We require calories and nutrients — 40 to 50 separate substances that our bodies cannot make, we must get from food. Because these interact, studying one at a time gives results that may well be misleading.
Early nutrition scientists got “volunteers”— in quotes because study subjects often were prisoners — to consume diets depleted in vitamin C, for example. They waited until the subjects began to develop scurvy, a sign of vitamin C deficiency. Then they fed the subjects the smallest amount of vitamin C that would eliminate symptoms.
Because individuals vary in nutrient requirements, scientists used this data to estimate the range of nutrient intake that would meet the needs of practically everyone.
The Institute of Medicine compiles such data into Dietary Reference Intakes and presents the estimates by sex and age group. You can look up your requirements in DRI tables. DRIs account for the needs of 98 percent of the population. If your requirements are average, you will need less.
Few American adults show signs of nutrient deficiencies, but if you are worried about your own intake of nutrients, you can take a multivitamin supplement. Note, however, that we have no evidence to show supplements make healthy people healthier.
You can estimate calories by looking up everything you eat or drink in food composition tables, but it is easier to weigh yourself at regular intervals. If you are gaining weight, you are eating too many calories for your activity level.
With nutrition, it’s best to get comfortable with estimates and probabilities.
Fortunately, eating a healthy diet takes care of nutrients without your having to give them a thought. Eat your veggies!
A version of this article appeared in the Tuesday, May 1 print edition. Marion Nestle is a contributing columnist. Email her questions at dining@nyunews.com.
A question from a reader:
Q. I was wondering if you could comment on the recent article in the New York Times which questions the link between food deserts and obesity.
A. Sure. Happy to. The article talks about two recent studies finding no relationship between the types of foods children eat, what they weight, and the kinds of foods available within a mile and a half of their homes.
These finding seem counter-intuitive in light of current efforts to improve access to healthier foods in low-income communities.
Obesity is more common among the poor than among those who are better off. Poor people must be eating more calories than they expend in physical activity.
Eating more calories means eating more of foods high in calories, especially fast food, snacks, and sodas. Kids who are heavier have been found to eat more of those foods than those who are not.
I can think of several reasons why this might be the case:
I can think of ways we might try to improve any of these factors, but I’m guessing that cost is the critical factor for people with limited means. The Department of Commerce reports that the indexed price of fresh fruits and vegetables has increased by 40% since 1980, whereas the indexed price of sodas has declined by about 30%.
Fast food, snacks, and sodas are cheap. Fruits and vegetables are not.
Without access to healthful foods, people cannot eat healthfully. But access alone cannot reverse obesity.
The real issue is poverty. Unless we do something to reduce income inequality, and to make healthier foods more affordable, fixing the access problem is unlikely to produce measurable results on its own.
Posted from the World Public Health Association annual meeting, World Nutrition 2012, in Rio.
I am in Brazil at meetings of World Nutrition Rio 2012 but was deluged yesterday by links to a lengthy Reuters’ Special Report: How Washington went soft on childhood obesity.
In an e-mail, Reuters explains that its report is about how food and beverage companies dominate policymaking in Washington, doubled lobbying expenditures during the past three years, and defeated government proposals aimed at changing the nation’s diet.
Reuters Investigates also has a video about how the food industry fought back when the White House sought healthier school lunches and Congress directed federal agencies to set nutrition standards.
Readers of this blog may recall my post last December fretting about the White House pullback, and the vigorous denial the next day by White House senior food policy advisor Sam Kass.
I attributed White House caution to the upcoming election. Reuters does too, apparently, and so does the New York Times.
If the First Lady is to make real progress on Let’s Move, she needs all the support she can get. This might be a good time to send a note to the White House strongly encouraging more vigorous action on methods to address childhood obesity.
Politics does indeed make strange bedfellows.
The American Enterprise Institute, a conservative (to say the least) think tank, has just issued a report on reforming the farm bill to ensure a safer food system. Its stunning conclusion:
More feasibly, in the short to medium term, changes in food safety regulation should aim at correcting inconsistencies or loopholes that exist in US food safety laws.
For example, policymakers could merge the FSIS and the FDA to allow for a better allocation of resources and exploit potential return to scales.
Standardizing states’ detection systems for food-borne illnesses and collecting better data about the incidence of food-borne illnesses would make firms more accountable and help construct better food safety policies.
Merge the food safety functions of USDA and FDA? This, of course, is precisely what food safety advocates and the Government Accountability Office have been urging since the early 1990s.
Now, maybe, it has a chance?
On April 22, the New York Times published an unusually lengthy account (front page plus three full pages) of how Walmart executives in Mexico bribed officials to allow the company to open stores in many locations in record time.
I was struck by the simplicity of the rationale for the illegal behavior (I’ve italicized the key points):
But The Times’s examination uncovered a prolonged struggle at the highest levels of Wal-Mart, a struggle that pitted the company’s much publicized commitment to the highest moral and ethical standards against its relentless pursuit of growth.
Under fire from labor critics, worried about press leaks and facing a sagging stock price, Wal-Mart’s leaders recognized that the allegations could have devastating consequences, documents and interviews show.
Wal-Mart de Mexico was the company’s brightest success story, pitched to investors as a model for future growth. (Today, one in five Wal-Mart stores is in Mexico.) Confronted with evidence of corruption in Mexico, top Wal-Mart executives focused more on damage control than on rooting out wrongdoing.
As I keep saying, Wall Street pressures on corporations not only to make profits, but to grow profits every quarter, are the root cause of much food company corruption and corner-cutting.
You have to feel sorry for the beef industry. First pink slime, now a mad cow.
Here’s what we know about the latest mad cow scare (the USDA has a page devoted to mad cow disease, so does the FDA, and I wrote about it in my book, Safe Food: The Politics of Food Safety).
According to the Wall Street Journal,
The disease was detected on a cow carcass taken in for rendering last Wednesday at an animal-rendering plant in Hanford, Calif., said Dennis Luckey, vice president of Baker Commodities Inc., a Los Angeles-based processor of animal byproducts that operates the facility.
Mr. Luckey said the cow had died at a dairy he couldn’t immediately identify, saying that information was in the hands of the USDA.
The plant renders cows that have died to make commodities such as “high-protein ingredients for poultry feed and pet food,” according to Baker’s website.
During the British mad cow scare of the 1990s, people eating beef and cats eating cow byproducts got the disease, but dogs did not.
The USDA is issuing assurances that the system is working since mad cow prions from this cow did not get into the food supply for people or pets.
My assessment: The risk of you getting this disease from eating beef is extremely small.
You don’t find this reassuring? Eat your veggies!
On Tuesdays, I answer questions about nutrition in NYU’s student newspaper, the Washington Square News. Today’s is about youthful immortality.
Question: Many students have expressed that, being so young, they can eat whatever they want and stay thin. What kind of implications does the type of food we eat have on our body weight? If a student is thin but eats bad foods, are there still detrimental effects? Additionally, at what age does what you eat tend to have the biggest effect on you?
Answer: It’s not only youth that keeps college students trim. It’s the lifestyle: running to classes, late nights studying or partying, irregular meals, eating on the run. Once students get past the hurdle of the “freshman 15″ — the weight gain that comes from unlimited access to meal plans — most do not gain weight in college.
It’s what happens afterward that counts. Even the most interesting jobs can require long hours in front of a computer or chained to a desk. Eating out of boredom becomes routine and, once middle age hits, it’s all over. The metabolic rate drops with age, and you can’t eat the same way you used to without putting on pounds.
The college years are a great time to start behaving in ways that will promote lifetime health. If you smoke cigarettes, stop while you can. Don’t binge drink. Practice safe sex.
As for diet, eat your veggies. Whenever you can, eat real foods, shop at farmers’ markets and learn to cook. Cooking is a skill that will bring you — and your family and friends — great pleasure throughout life. If you cook, you will always have the most delicious and healthiest of diets at your fingertips.
You don’t know how? Try an Internet search for “free cooking lessons online.” Mark Bittman’s Minimalist videos, for example, make things simple with results that can be spectacular.
Do the best you can to eat well now, and think of it as easy life insurance.