The subject is a report published by CDC today claiming that obesity among NYC schoolkids in grades K through 8 has decreased 5.5%.

The city’s health commissioner, Thomas A. Farley has been true to the shades of history’s empty-headed warriors.  Farley announced that the drop in obesity prevalence is a “turning-point in the obesity epidemic” although it “does not by any means mark the end.”

A missed photo opp:  Dr. Farley standing on top of a fat child, holding up a sign reading, “Mission Accomplished.”

Farley is zealous about controlling people’s behavior and contemptuous of facts (nobody will ever accuse him of being an intellectual, either).  He blogs about his own work for the exclusive reading pleasure of Department of Health staffers.  This allows his staff to read the Farley-esque twist on truth.  One example for now:  in October of 2010, Farley’s blog exultantly told his staff that in 2009 the department had “immunized nearly 130,000 children [against flu] in more than 1,200 schools over a few months.”  Of course, health department employees are smart — many of them knew that the 2009 H1N1 vaccine Farley was talking about was a fiasco, far too late to make a difference, and aimed at an outbreak that was more of a whimper than a bang.

What about today’s “turning point” in the obesity war?  It’s worth noting that the supposed drop in obesity among NYC schoolkids is really just a very slight (1.2%) difference in the prevalence of obesity between 2006-7 and 2010-11.

A small difference between small numbers amounts to a large percentage difference.  So the 1.2%  actual difference magically turns into the advertised 5.5% — the proportionate change.

But the false advertising gets worse

1.  The prevalence of obesity in NYC was not measured multiple times on the same group of kids (to use epidemiology jargon:  this wasn’t a panel study).  Nobody observed fat children becoming less fat.  The city simply measured obesity prevalence each year on 5- to 14-year-olds who were in the school system.  So a high proportion of the 21.9% of kids who were labeled obese in 2006-7 would have been out of the age range for the 2010-11 assessment.

Plus, lots of kids leave the NYC school system after grade school (this has to do with Bloomberg administration’s bizarre system for preventing children from attending local schools).  So, even those children who haven’t aged out of the analysis by turning 15 would be absent from the data after a few years.  And, there’s also natural immigration and emigration.

Did the 2006 fat kids get slimmer?  Nobody knows.  The 2006-7 obesity prevalence among NYC schoolkids (21.9%) can’t be compared to the 2010-11 prevalence (20.7%).  If you were forced to compare these numbers, you’d say there had been a slight change — not a 5.5% decline.  There’s the first lie.

2.  The second lie is a little more complicated.   Since there is no widely accepted functional definition for childhood obesity, children are labeled obese if their body-mass index (BMI) falls into the upper 5% of the expected distribution of weight-for-height.  This expectation is based on an old-fashioned standard.  Fair enough.  But lots of distributions shift over time — SAT scores, human height, grades awarded at Ivy League colleges, and global average temperature, to name a few.

Sometimes the reason for an overall shift of this sort isn’t hard to specify (test prep, nutritional quality, relaxation of grading standards, generalized global warming, etc.).  But the main effect causing a shift in the distribution doesn’t explain why the few people who are in the upper reaches of the distribution are so far from the mean.  To say that fewer children are now above the high-BMI cutoff than in 2006-7 therefore the tendency of children to be fat is declining is a lot like claiming that because 2011 was cooler than 2009 and 2010, global temperatures are not really going up.

(Dr. Farley, I gather that statistics aren’t your strong suit, but surely when you witnessed that snowstorm we had this past October — an outlier if there ever was one — you didn’t conclude that the climate is actually getting colder, not hotter.  So what makes you think that a very tiny decrease in the proportion of kids with high BMIs means that the city’s kids are getting slimmer?)

3.  Claiming credit.   Attributing to the health agency’s own efforts a minuscule change in the proportion of kids who are in the upper tail of the broad BMI distribution requires self-congratulation so acrobatic as to stretch credulity.

Maybe there really has been some change in the city’s children since 2006.  Or in our food supply or buying habits.  Or exercising.  But to claim that such a change both caused the tiny decline in schoolkid obesity prevalence and that it was the result of the Health Department’s efforts — the exercising and the low-fat milk and the salad bars in the school cafeterias and so forth — is to commit the fallacy that Rene Dubos outlined (in his book Mirage of Health) nearly 50 years ago:

When the tide is receding from the beach it is easy to have the illusion that one can empty the ocean by removing water with a pail.

Is childhood obesity really a health problem?

It’s not crazy for health professionals to be concerned about body mass.  Obesity might be really bad for some people, and somewhat bad for many.

But those people are adults.  Why are health agencies like NYC’s so riled up about obesity in little children?

So far, there’s no strong evidence that obesity in younger children predicts any real harm later in life, other than being a fat adult.  With adults, several signs of impending debility are more commonly found in the obese than the non-obese, such as hardening of the arteries, fatty liver, sleep apnea, and diabetes.   And with adolescents, there’s some evidence that those who are obese develop similar warning signs.  But not younger kids.

A 2005 BMJ paper reported only social effects in adulthood (being unemployed and being without a romantic partner) of early obesity.  Similarly, one cohort study carried out in Newcastle upon Tyne found little evidence that fat children became fat adults, and no evidence for predictors of illness in adulthood among those who had been overweight as children — although other studies have shown correlations between adolescent obesity and adult problems.

For kids below age 15, the most visible problem with obesity is that it occurs most commonly among the poor and dark-skinned.  This bothers the obesity warriors.  In fact, not only is obesity more common in African- and Hispanic-American children in NYC, even the slipshod standards of today’s report on NYC schoolkids can’t be manipulated to show that obesity is declining among these children.

As with all holy wars, from the Children’s Crusade through the U.S. invasion of Iraq, the warriors aren’t really concerned about principle.  Something about somebody got under their skin.

Here’s how I answer my own question:  I guess the obesity crusaders don’t like it when the children of the wealthy look like the children of the poor.  They think that white kids on the Upper East Side aren’t supposed to look like kids who live in the Bronx.

It isn’t about health, in other words.  It isn’t even about obesity.  The “childhood obesity epidemic” is about making sure society looks the way that the health crusaders want it to look.

A paper by David Leon in this month’s International Journal of Epidemiology showed the dramatic increase in life expectancy — the median age at death, that is.  It has reached over 85 years for women in Japan, but it’s high even in countries where longevity was relatively low a generation ago.  Cheeringly, US life expectancy at birth is now 78 years; in the UK it’s 80.  And it’s even higher in some countries of western continental Europe.  Here are the graphs for different parts of the world from Leon’s paper, showing trends since 1970:

Life expectancy since 1970

Lyons has gone after the anti-obesity crusaders before (as well as related topics at his smart blog on contemporary food confusion, Panic On A Plate).  Now, he’s particularly disturbed by the sermonizing about eating. “You can’t even have a pie and a pint without someone telling you it will kill you, it seems,” Lyons writes at Spiked.

And, really, it’s even worse than that — because it’s not just eating that’s the subject of the lecturing.  It might be true that you will live longer if you give up smoking, cut your salt intake, drop your BMI down to 24.99, exercise four times per week for at least 20 minutes each time, get immunized against flu and human papillomavirus, drink in moderation, and take naps.  But unfortunately there’s not a bit of evidence that any of that — apart from the decline in smoking — has contributed to increasing longevity.

And of course, even with smoking cessation, there’s no telling whether it would make any difference to you — only on average.

So why are the public health messages so far away from what really matters — basically, prenatal care, postnatal care, and wealth (with its concomitant, standard of living)?  Well, there’s a puzzle.

What’s the point of having an industry whose main aim is to make sure that people are constantly in fear that they are doing something that will kill them — even as it becomes apparent that most of what people do is only making us live longer?   Lyons calls it Good News Omission Mentality Syndrome (GNOMES).

I ask you:  could it have something to do with control?  And the desire to sell products?

What has changed?  How does the story of wrangling over the sodium content of American food merit space in the main news sections of the most influential media — even the front pages of the NY Times or LA Times?

1.  One answer is that health occupies much of the American conversation today.  A visitor from another planet watching our TV news shows or reading the main newspapers would have to be forgiven for thinking that Americans are dying from a multitude of irrepressible disease threats.  We can’t seem to stop talking about how to improve our health.

(In fact, as Michael Haines notes at the Economic History Association website, U.S. life expectancy almost doubled between 1850 and 1960, from 39.5 years to 70.7 years; since then it has increased slowly, and is now estimated to be about 78.2 years.  In other words, health wasn’t a matter of news much during the time when longevity was improving dramatically, in the late 19th century and first half of the 20th.  By the time health became a cultural preoccupation, the majority of Americans were living well past middle age.)

2.  Another answer, perhaps more important is that when we talk about health today we mean personal responsibility.

When I began studying epidemiology, in the late 1970s, public health essentially meant disease control.  Yes, lip service was paid to so-called health promotion — much was made of the World Health Organization’s definition of health, promulgated in 1946:

Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.

But no metric for complete well-being was widely recognized.  And the usual epidemiologic measures of incidence and mortality rates, life expectancy, and so forth seemed to work just fine as ways of understanding why some groups of people lived longer and more capable lives, while others lived miserably and died young.

Sometime since then, the health sector, including public health, has turned to individual responsibility as the key to well-being.

If each of us is responsible for his or her own health, then it’s our own fault if we get sick.  Naturally, advice abounds:  buckle up, use a condom, eat less fat, know your cholesterol level, wash your hands, use mosquito repellent containing DEET, wear sunblock, eat fresh fruit and vegetables every day, lower your stress.

The advice adds up to this:  know your limits.  Federally sponsored research tells us that self-control is ontagious.

The personal-responsibility view of health says, “control your appetites.”

3.  But let’s think about another change:  more people are concerned about the American diet.  As noted last week, the food movement has given us ways to think about eating that go beyond the tiresome story of obesity and hypertension — Beyond Fat and Salt, you could say.

Of course, the main media outlets still tell the food story in Fat-and-Salt language, as the news articles in the NY Times, LA Times, and others show.  It’s the food industry vs. the foodies, or the food industry vs. public health, or the food industry and public health vs. appetites — anyway, somebody against somebody in the name of health.

The media aren’t quite past obesity and hypertension yet.  But as the culture moves beyond obsessive self-inspection in the name of health, no doubt media will, too.

Reviewing five books on what he calls the “food movements,” Pollan notes the widespread discontent with contemporary industrialized food production (I’ll call this “American eating,” although its dominance is increasing around the world).  And he suggests that its common theme is cultural discomfort. The food movement, Pollan argues, has “set out to foster new forms of civil society”:

It makes sense that food and farming should become a locus of attention for Americans disenchanted with consumer capitalism.  Food is the place in daily life where corporatization can be most vividly felt…  The corporatization of something as basic and intimate as eating is, for many of us today, a good place to draw the line.

This is a refreshing insight.  It’s thankfully broad, taking  the focus away from health, and therefore from the anti-obesity crusade and the “toxic food environment” view promoted by health advocates.

But Pollan’s perspective is especially refreshing because it renews the conversation about our private lives — particularly the extent to which we’ve ceded our innermost values to the demands of corporate profit and government policies.  And those demands, as Marion Nestle often points out (recently here), are generally linked.

Pollan reminds us that our innermost values are literally innermost:  they have to do with what goes into our stomachs.

I’ve already stated my argument that the anti-obesity crusade is really about control, not health (see here and here).   The crusaders do cite “public health” as a rationale for the war against obesity.  But when they describe what’s wrong, they do so in terms that are sometimes medical (diabetes, hypertension), sometimes technical (serving sizes, calorie counts, the infamous toxic food environment), and sometimes medieval (gluttony, laziness).  Their inability to articulate the source of the problem is a signal that they’re sure something is out of control but unsure exactly what.

The public health approach to obesity is a failure.  It doesn’t let us talk about what needs to be reformed.  And it’s often allied with efforts to make sure the poor stay poor — even though wealth inequality is surely part of the problem in the first place.  The public health industry’s demands for additional regressive taxation in the form of increased “fat” taxes on sugary beverages or high-calorie foods reveal its preference for the status quo.  Make the poor pay more for their soda and fast food; that will make them think twice about supporting industries that are making us fat.

Even well-meaning public health professionals who advocate government intervention against low-price-but-low-nutrition food  as a way of curtailing obesity ignore the central role of food and eating to liberty and happiness — they’re interested primarily in how many additional years of life (however unhappy) could be purchased by trading in the fries in favor of broccoli.  Or, worse, they’re interested only in the dollar costs to taxpayers — in terms of hypertension and heart disease — of tolerating obesity.

Pollan, today’s most thoughtful and insightful philosopher on the subject of food and eating, offers a more satisfying view.  Sure, you may want to change American eating because you think obesity is bad for people’s health.   But you might want to change eating simply because the food scene is distressing, because it crystallizes and exemplifies the many ways that we give over our private (innermost!) moral decisions to the influences of corporate/consumerist thinking.  You might want to change it because, as Pollan reminds us (in regard to a new book by Janet Flammang), the dominance of American statecraft by corporations allows the preparation of food to be relegated to the least valued, least powerful, and lowest paid workers.  You might want food to taste better — valuing pleasure over longevity.

With Pollan’s broad view, you  don’t have to join the anti-obesity crusade.  You don’t have to speak the technical language of risk.  The common language of freedom, desire, and pleasure will do.

In an article posted on the NY Times website Sunday (and published in the print edition Monday), McNeil reports on the inability of treatment programs in parts of Africa (this piece focuses on Uganda) to keep up with the need for AIDS medication as funding falls.   A very compelling video report accompanies the online version of the article.

An accompanying article explains the decline in funding, starting with the fall in the U.S. administration’s request on behalf of PEPFAR, as a Times graphic shows.

The number of new infections with the AIDS virus is estimated to be about 2 million per year now.  Some observers think annual incidence will rise as the population expands; even if not, the annual number of new AIDS virus infections is unlikely to fall in the near future, given present circumstances.

At the same time, the Times reports, anticipated PEPFAR funding is essentially flat to 2013, at $5 to $5.5 billion per year.  Financing for AIDS medications through the Global Fund to Fight AIDS, Tuberculosis and Malaria is in dire straits.

In terms of people, not dollars:  of the 33 million or so individuals who are infected with the AIDS virus worldwide, only about 4 million get regular antiretroviral therapy.

A few years ago, I wondered why,  after a quarter-century of AIDS and with the availability of effective treatment (at least in wealthy countries), Americans still didn’t see AIDS as an ordinary illness.

Now I have an answer:  we do see AIDS as ordinary… for poor countries.  To us, AIDS is no longer an epidemic problem worth our getting worked up over, or so it would seem judging by PEPFAR.  AIDS is like malaria, tuberculosis, or schistosomiasis.  It’s like diarrhea.  The Bill and Melinda Gates Foundation will put money into research or specific programs but we as a country will not need to care anymore.  We shift the funding away from the people in Africa, who are going to die young anyway, and put it into the hands of institutions (often, pharmaceutical companies) that can give us the promise of immunity from disaster.

The U.S. put less funding last year into PEPFAR than it did into preparations for H1N1 flu ($7.6 billion) or the school lunch program ($14.9 billion, according to the Robert Wood Johnson Foundation’s Center to Prevent Childhood Obesity), battleground in the war against childhood obesity.

Flu and obesity are epidemic.  They threaten American assumptions about ourselves.  “Epidemic” means:  crisis in our society.  Our epidemiologists say that malaria, diarrhea, and the other problems that collectively kill 20,000 or 25,000 people (mostly children) every day are endemic. 

“Endemic” means:  not our problem.

AIDS is endemic too, now.  It has gone to ground, gone the route of other once-dreaded infections that caused calamity in America and triggered heated debate (yellow fever, cholera, typhoid, TB) but have disappeared from our scene.  It’s their problem, now.

May CDC become a force for real public health, not an advocate for the risk-avoidance canard.  May the new director, Dr. Frieden, stop favoring pharmaceutical companies’ profit making through expansion of immunization.  And may he direct the agency to begin to address legitimate public needs, like sound answers about vaccines and autism, and clear communication about what is — and isn’t — dangerous about obesity.

May WHO officials stop playing with the pandemic threat barometer.  May WHO begin demanding that the world’s wealthy countries devote at least the same resources to stopping diarrheal diseases, malaria, and TB as they do to dealing with high-news-value problems like new strains of flu.   Diarrheal illness kills as many children in Africa and Asia in any given week as the 2009 swine flu killed Americans in eight months.  So does malaria.   Direct policy, and money, toward sanitation, pure water free of parasites, adequate treatment of TB, mosquito control, and prevention of other causes of heavy mortality in the developing world — not just flu strains that threaten North America, Europe, and Japan.

May public health professionals lose their obsessions with bad habits. May the public health profession return to the problem of ensuring basic rights — access to sufficient food, clean water, decent housing, good education, a livable wage, and adequate child care — and ease up on its moralistic obsessions with nicotine and overeating (for recent examples of the preoccupation with tobacco, see this article or this one (abstracts here; subscription needed for full articles) in recent issues of the American Journal of Public Health).

May science be what Joanne Manaster does at her incomparable website: looking at the world with wonder, asking without dogmatic preconceptions how it works, and accepting that its irrepressible quirkiness makes it impossible to know the world perfectly.  May science not be the crystal-ball-gazing thing whose so-called “scientific” forecasts are really doomsday scenes worthy of the medieval Church — predictions of liquefied icecaps and rising seas,  hundreds of millions of deaths in a flu pandemic, or catastrophic plagues sparked by people with engineered smallpox virus.  There are plenty of reasons to be concerned about both the environment and disease outbreaks based on sound here-and-now observations; leave the forecasts of Apocalypse to the clergy, who know how to handle dread.

A new year’s wish (from the valedictory exhortation in Tony Kushner’s Angels in America):  “More life!”

Nutty, but not so terrible, perhaps.  The policy is a transparent attempt by a not-so-wealthy university to seem au courant and curry favor with donors, who might like the idea that the school is addressing obesity — which the public health industry keeps insisting is a terrible problem facing young people.

Really, the obese-student policy at Lincoln doesn’t demand much.  Some students have to work out for a few hours a week (it’s a 1-credit course).  Not how they want to spend their time, probably pointless in terms of their health, but not the end of the world.

But pay attention to the commentary.

The director of another university’s center on higher-education law and policy voices concern — not over Lincoln’s feeble gesture at controlling fatness , but over medical confidentiality.  “Being put in a class with other ‘at-risk’ BMI’s walks a little close to disclosure,” he told the Chronicle.

The implication here is that obesity is an illness, and therefore only a physician should be allowed to know that you have it.  Certainly, your classmates shouldn’t.

How can obesity, of all things, be thought of as a secret that would only be revealed if you got into gym shorts and showed up on the treadmill in the fat-students’ class?

There’s a clue in the use of the term “at risk”:  obesity is like sleeping around without using condoms, driving drunk, or smoking near your kids  — it’s supposed to be both dangerous and shameful.  You would only admit being “at risk” to your doctor (who would, we have to assume, dutifully dissuade you from following your naughty instincts).

At the NYT blog The Choice, Rebecca Ruiz notes that the Lincoln faculty will be discussing the problem tomorrow.  So far, there’s been plenty of skepticism there, but a few defenders of the fat-class policy.  And most of the comments responding to Ruiz have been supportive of the idea that a university might require physical exercise.

What isn’t getting mentioned is race.  Is the policy popular because Lincoln is one of only two HBCUs in Pennsylvania, and some of the much-discussed “adverse outcomes” of obesity are conditions that are common among African Americans?  Do people feel  relieved that a predominantly African-American university is addressing a problem that seems somehow racial?  Do we feel reassured that a college that  doesn’t serve America’s traditional wealthy elite is taking on a problem that seems to be a threat to the elite — and a threat that seems born of the bad habits of the poor, especially the dark-and-poor?

Obesity is more common among people who identify themselves as African Americans — even at colleges, as a recently published study showed.  Here, and worldwide, obesity is mostly a problem of poverty.

Doesn’t obesity’s taint stem, at least partly, from the way it reminds Americans of poor people — and the dark-skinned poor in particular?

This month’s American Journal of Public Health brings us a primer (abstract here; subscription required for full text), written by lawyers supported by the Robert Wood Johnson Foundation, teaching “policymakers to avoid potential constitutional problems in the formation of obesity prevention policy.”

The article isn’t exactly a Steal This Book for the anti-obesity crusaders, but the authors’ stated aim is to help those crusaders skirt legal challenges to statutes that might, for instance, ban fast foods or require the posting of accurate calorie counts on restaurant menus:  “This primer is meant not to deter obesity prevention efforts but to foster them,” the authors adumbrate.

Of course, the anti-obesity crusade is well on its way to using the law to tighten the control of behavior already.  And the failure of restaurant calorie counts to show any effect on eating patterns isn’t dampening enthusiasm, it seems.

Brian Elbel of NYU and colleagues just reported in Health Affairs that the calorie counts now posted by law in New York (another piece of legislation backed by our bluenose mayor) don’t affect how much people eat,  based on a study of over a thousand New Yorkers from minority neighborhoods (abstract here, full article here).  At Freakonomics, Stephen Dubner surmises that this sort of program only helps people “who are already the most vigilant about their health and well-being.”  But it’s hard to find anyone in public health who is opposed.

They should be.   The public health industry, which likes to claim its main interest is human dignity, should be lobbying for less regulation of human appetites, not more.

But public health is often the pre-eminent paradigm of control in our society. Rename the acts or traits you find morally repugnant as diseases, and you can hand them to the health sector for management.   Once you say you’ve got an epidemic on your hands, you can count on the public health industry to respond.  Alcoholism, addiction, smoking, obesity, social anxiety… there seems to be a big supply of epidemics that used to be moral offenses or threats to the social order and are now opportunities for your doctor or your health commissioner — not your clergyman — to tell you how to act.

The neat thing about the control exercised through public health is that you never have to sermonize, read Bible verses, or prophesy Apocalypse.  The rhetoric of risk is a lot easier for the self-professed progressives in public health to swallow than religious sermonizing would be.  Even when the sermon and the risk rhetoric have the identical goal: wiping out the moral offense.

From Junkfood Science, we learn that

Employers will now perform random tests of employees for evidence that they’ve smoked outside of work and will weigh employees in the workplace and report their BMIs to the state. Employees deemed noncompliant with the State Health Plan’s employer wellness initiative, will pay one-third-more for health insurance. Employers believed that eliminating smokers and fat people would lower health costs.

And from WSJ Health Blog, that the CEO of pharmaceutical corporation Schering-Plough agreed (at a meeting at the Cleveland Clinic) that people with unhealthy behavior should pay more for health insurance.  Sure — you certainly wouldn’t want the wealthy to pay more.

That’s not the only problem with the public health industry’s vigorous embrace of behavioral control, but it’s a big one.  Start classifying people based on how they behave, and you begin discriminating against the ones who don’t act right.  But the ones who you think don’t act right are almost always the ones society was already discriminating against — the poor, most of all.

And even when the poor aren’t getting shafted in the crusade against the unhealthy, inquiry about how a just society should work is going down the tubes.  The profound moral-philosophical questions of what is the right way to live a life, the right way to raise children, the nature of liberty, and so forth, are surrendered in the public health paradigm – replaced with the simple dichotomy:  healthy vs. not-healthy.

The NEJM paper argues that there would be health benefits of a tax on sugar-sweetened drinks — preferably to take the form of about a penny’s worth of excise tax levied per fluid ounce for any beverage containing “added caloric sweetener” (possibly to be defined as more than 1 g of sugar per 30 ml of beverage).

There’s much to be learned by the response.  The NY Times article, in its Business section Wednesday, was titled “Proposed Tax on Sugary Beverages Debated” but was generally slanted strongly in favor of the proposal.  If you read only the Times, you would think that objections to the tax come only from industry, which obviously has an economic interest in keeping sales of soda and sport drinks up by keeping the price down.

Shirley S. Wang at yesterday’s WSJ Health Blog adds some insight.  She points out that a 2-liter bottle of soda subject to the proposed tax, assuming the tax is entirely passed along to consumers in the form of higher prices, would still be much cheaper than a half-gallon of orange juice.

James Knickman of the NY State Health Foundation, writing in the NY Daily News last week, acknowledged that a soda tax would be essentially regressive, affecting the poor more powerfully than it does the wealthy.  He urges that

To counteract the soda tax’s regressive nature, revenue generated from the tax should go to health-related programs that benefit the poor – essentially putting the money back into their pockets. The revenue could be used for myriad initiatives, including subsidies for federal health reform – which is estimated to cost $1 trillion over the next 10 years – subsidies of fresh fruits and vegetables and other healthy foods in low-income community grocery stores, and food stamp increases for the purchase of fresh fruit and vegetables.

Knickman gets at one of the main purposes of a tax like this:  to get the poor to pay more of the costs of doing business.

But what isn’t being discussed, it seems, is the underlying logic.

First, there’s the assumption that obesity is uniformly and intensely bad.  The NEJM article begins with the statement “The consumption of sugar-sweetened beverages has been linked to risks for obesity, diabetes, and heart disease,” citing three articles — two of them authored, in part, by the same men who helped write this week’s soda-tax NEJM article.

What’s the point of the misleading opening in the NEJM paper (apart from getting some additional citations for the authors’ other work)?  The line suggests that drinking sugar-added beverages causes heart disease, yet no evidence suggests that.  Extra calories might add up to extra weight, some people (less than half) who have BMIs in the “obese” range report having diabetes, and diabetes can predispose to heart disease — but the NEJM authors make it seem that the sugar-heart connection is somehow direct.  The point is to create an impression of uniform and unavoidable harm. Who would want to be for heart disease?

The supposition that obesity is a terrible illness responsible for broad impairments to Americans’ health — a premise that the soda tax depends on –  is amply and cogently criticized in a series of posts by Sandy Szwarc at Junkfood Science (start here, for instance, or here).  In fact, epidemiologic studies point to a relatively small effect of obesity on mortality, primarily at the upper end of the weight-for-height (body mass index, BMI) scale.  A careful analysis of national survey data from a few years ago (Flegal et al., JAMA 2005) shows that the effect of high BMI on mortality has been declining over time and almost entirely vanishes after age 70.  In fact, some studies point to a protective effect of high BMI for older Americans.

And the claim that increasing the price of sugary beverages is a suitable inducement to Americans to change their behavior rests on standard — but flawed — economists’ analysis.  It’s rational choice theory come home to roost at your refrigerator door.  If you know that it’s going to cost two bucks and a half to replace that 2-liter bottle of root beer in the fridge, you’ll drink it more sparingly than if it cost only $1.29, the theory goes.  Here is where the regressive aspect comes in.  It’s primarily to the poor that coming up with $2.50 for a bottle of root beer seems substantially more difficult than $1.29.  Here, the soda tax reveals itself as just another attempt to get members of what is perhaps America’s most despised ethnicity — the poor — to “fix” their behavior.

And it all rests on a premise so common we might call it the American assumption:  that people only do things that might harm their health because they don’t know any better or because they can’t stop themselves.  Ergo, laws and rules, to make sure everyone knows where and how to draw the line — taxes, bans on smoking in restaurants (or, perhaps soon, parks) and bans on serving trans fats, removal into foster care of kids whose mothers use drugs, prosecution of parents whose kids are too fat, et cetera.  And of course, we need the products that will provide substitute enjoyment or relief.  Thus:  sugar-free soda, trans-fat-free potato chips, Prozac and other SSRIs, diet books, gyms, alcohol-free beer, and so on.

And we need it all to be wrapped up and rationalized in the language of avoiding risk.

Apparently, it isn’t plausible to the doctors and scientists who wrote the NEJM paper, or the legislators who are eager to institute the proposed soda tax, that people might drink too much soda — or eat too much, or smoke, or stay home and watch TV instead of jogging — with full awareness of the possible consequences.   In the risk-free zone of America as envisaged by the public health industry, only the insane and the uninformed would engage in “risky behavior.”

Nobody, in risk-free America, does anything because it feels good, knowing it might be harmful.  Nobody overeats because it brings her pleasure, nobody screws without a condom because it turns him on, nobody smokes because she had a bad day or a good day or because the day hasn’t started but it looks unpromising, nobody rides her bike without a helmet because she likes the feel of the wind in her hair.  It’s risky.  We all know better.

The libertarians think it’s big government you give up your private choices to, and the progressives think it’s big business.  But really, it’s neither — or both, working together.  And the public health and medical industries are complicit.  It’s not a conspiracy.  It’s more like religion.

“We all want to believe that a pill or potion that comes from sea coral or from the Amazon jungle will cure that pain for which little else has worked,” Verghese writes.  The “flip side,” he says, “is that we are extraordinarily sensitive to any suggestion that someone is taking away something we think is good for our health.”

And magical thinking’s influence isn’t limited to cruising the natural supplements aisle or reading the ads in a health magazine.  Sometimes it’s part of expert opinion — and so it becomes part of widespread belief.

Consider how the flu experts talk about the possibility of swine flu’s return this fall. In Monday’s Washington Post, the experts’ words wax electric.  Dr. William Schaffner, chair of Preventive Medicine at Vanderbilt U.’s medical school, asserts that “The virus is still around and ready to explode…. We’re potentially looking at a very big mess.” And Dr. Arnold Monto, a physician epidemiologist at U. Michigan’s School of Public Health, worries “about our ability to handle a surge of severe cases.”

So, even as H5N1 reports that an article in The Independent finds scientists skeptical as to whether there will be a so-called second wave of serious flu outbreaks in the northern hemisphere this fall, we’ve got American scientists suggesting — in high-voltage terms — that something awful is going to happen.

They’re not wrong: something bad might happen.  That’s always true.

But language matters.  And language coming from so-called experts matters a lot.  It has magic.

Vigorous metaphors promote popular fears.  The last time swine flu came around, in early 1976, respected virologist Edwin Kilbourne published an influential op-ed piece in the NY Times (13 Feb 1976), called “Flu to the Starboard! Man the Harpoons! Fill with Vaccine! Get the Captain! Hurry!” Kilbourne urged officials to prepare for an “imminent natural disaster.” Fair enough:  a serious H1N1 flu might have happened in ’76 (it didn’t) — but his whaling metaphor appealed to more than just preparation.  It was about power and authority (“get the captain!”).  Presumably, the authority of science, industry, and government.

And so with other metaphors that are meant to be calls to arms.  There were the warfare metaphors about the alleged threat of bioterrorism, and the plague metaphors about AIDS.  Now, there are explosive metaphors about obesity.

Last year, acting U.S. Surgeon General Dr. Steven Galson called childhood obesity a “national catastrophe,” for instance.  And Dr. Risa Lavizzo-Mourey, president of the Robert Wood Johnson Foundation, warned of obesity’s “corrosive” effects, which, she asserted, imperil a generation of America’s youth.  According to Dr. Matthew Gillman of Harvard “You build [obesity] up over generations” — like an electrical charge in a capacitor, like explosive potential, the reader has to presume.

Talking about childhood obesity, Dr. Eric Hoffman of Stanford told the Washington Post that “we have taught our children how to kill themselves.”

Invoking metaphors to create magical thinking isn’t just an American habit.  Childhood obesity is a “time bomb,” according to physician Howard Stoate, chair of Britain’s All-Parliamentary Group on Primary Care and Public Health.

Verghese’s right.  People can be afraid to let go of what they believe they need for their health — however magically.  And magical thinking is inside the way our experts talk to us about health.  That sort of magic can run deep.

Yesterday, according to an Associate Press report, Frieden sermonized that “obesity and … diabetes are the only major health problems that are getting worse in this country, and they’re getting worse rapidly.”  Now, Dr. Frieden heads the agency that collects data on illness and calculates disease rates; presumably, he knows that many conditions are either increasing now or have risen to high levels from which they have not retreated — MRSA, Lyme disease, injuries in certain occupations, and foodborne illness, to name just a few.

But as Dr. Frieden’s campaigns in New York City against trans fats, unprotected sex, and TB sufferers who didn’t take their meds  revealed, when there is a moral battle to be fought the facts just get in the way.

The impetus for yesterday’s obesity sermon was a study by investigators at RTI who had determined that “obesity-related diseases” account for over 9 percent of U.S. healthcare costs.  Most people who suffer from most of the so-called obesity related conditions are not actually obese.  Even diabetes, the one most commonly associated with obesity in the popular mind (and, apparently, Dr. Frieden’s) occurs more often among people who are not and have never been obese than it does among those who are obese.  So the study was really showing that obesity accounts for much less than 9 percent of healthcare costs.

But that wasn’t the only problem.  While the RTI study found that obese people spend 40 percent more than comparison “normal” people on health, most of the increase in spending was related to pharmaceuticals.  So one might ask if it was obesity that was increasing expenditures, or the price of certain drugs.

Furthermore, there’s no way to know whether being fat was causing the obesity group in this study to be sick in ways that cost more money, or if they were fat because they were unwell in the first place.

In fact, the study wasn’t designed to test whether becoming obese led to an increase in medical expenditure — which might have shed some light on the question of whether obesity causes higher costs.  Many people in the study had no  expenditures at all for certain types of healthcare costs.  But the researchers weren’t interested in finding out whether obesity sometimes costs nothing at all, so they used an adjustment technique to allow them to relate obesity to predicted expenditures.

Finally, the estimate of percentage of total healthcare costs attributed to obesity-related expenditure was based on the assumption that obese people who return to “normal” weight suffer no consequences of their weight loss — an assumption that is well known to be false.

So it’s a falsehood to state on the basis of the RTI findings that obesity is accounting for a tenth of American healthcare costs — although AP, Reuters, and other media outlets so claimed in covering the Frieden sermon.

In fact, a lucid assessment of the findings would ask why, if obesity is supposedly up 37% among Americans and if two-thirds of Americans are now overweight or obese, obesity would account for only 9% of costs?  Surely if obesity is so bad, increasing its prevalence by more than a third would be swamping the healthcare industry with fat people.

But the whole appeal of a sermon is that it isn’t based on fact or lucid assessment of the present reality. It’s based on suppositions about the future with a steadfast moral foundation.  Frieden has the supposition and he has the moralism.  His religion is that it’s up to the “community” to perfect itself.

As Shirley Wang at WSJ Health Blog reports,  Dr. Frieden believes that  increasing availability and decreasing price of healthy foods, while decreasing availability and increasing  price of unhealthy ones, “is likely to be effective.” He claims that the decision to adopt such a strategy “is a political one.”

But of course it isn’t political in its essence; it’s moral.  When the community is told to perfect itself it rises to the occasion by looking to the usual moral suspects:  women, especially pregnant women or mothers; the uneducated; the poor.  Last fall, Frank Furedi discussed the moral underpinnings of British authorities’ removal of fat children from their parents’ homes.  And we can hope he’ll have something to say about what’s happening in the U.S., where the community policing can be even worse:  a few days ago, a South Carolina mother was arrested and charged with neglect for having a son who weighs over 500 pounds.  Other states have contemplated other methods of dealing with parents who violate the community standards of parenting.  Not by hitting their kids, starving them, or forcing them to work — but by allowing them to get fat.

Obesity is offensive, it seems, in just the way that sexual license and intemperance with alcohol have been found offensive by some.  And just as the problem with sex and drinking has been found in the environment — in “peer pressure,” the “latchkey phenomenon,” TV advertising, Hollywood, and the decline in “family values” — so it is with obesity.  “We did not get to this situation … because of any change in our genetics or any change in our food preferences,” Frieden adumbrated.  “We got to this stage of the epidemic because of a change in our environment and only a change in our environment again will allow us to get back to a healthier place,”

It isn’t obvious what to do when appetites produce offense — so it’s handy to claim that the environment is at fault and then to hand the problem to public health.  Because for certain health officials, it’s always clear what to do:  Take the moral high path, clean up the offending elements, urge the community to police itself better.  If more parents are arrested… well, perfection has its price.

Back in April, a fast-food establishment in Leytonstone, in the northeastern part of London, was shut down as a public-health threat.  As Patrick Hayes explains at Spiked, a 2009 initiative of the local council, called the Sustainable Community Strategy, outlaws the establishment of new carry-outs within 400 meters of a school.

Supporting the rhetoric, Professor Kathy Pritchard-Jones, president of the European Society for Paediatric Oncology, stated in February that “If we don’t … tackl[e] how much exercise our young people take and how concerned they are about what they eat and their weight, we are going to have another explosion of cancers.”

Last week, the U.K.’s Environment Secretary, Hillary Benn, invoked the fight against obesity as rationale for increasing access to open spaces, asserting that “green spaces are good for us” – a pitch which moved Spike’s sharp-eyed Rob Lyons to note that “You can’t even go for a stroll these days without it being turned into a health initiative,” and to anticipate that “chubby people [will be] quick-marched around a south London park for 30 minutes on a regular basis to help them lose excess pounds.”

There are so many pieces to the fanfare over the “obesity threat” that it’s impossible to assign one cause for the commotion. For a long time, Junkfood Science has investigated the sociology of the “science” of obesity in detail, and has exploded many of the central myths of the anti-obesity movement – most importantly the apocrypha about fatness and mortality.

And Paul Campos’s brilliant book The Obesity Myth (Gotham, 2004) explains how a constellation of wealthy industries together support the lose-weight-now rhetoric.

Elizabeth Kolbert’s assessment of some new books on the topic in this week’s New Yorker embraces the tired rhetoric, assuming that fat is bad and asking why people eat so much.  To her credit, Kolbert takes the plunge into examining the new field of fat studies.  But she ends up disparaging fat studies for “effectively all[ying] itself with McDonald’s and the rest of the processed-food industry, while opposing the sorts of groups that advocate better school-lunch programs and more public parks.” Apparently, asking that fatness be examined in the context of both social structures and individual liberties strays too far from the central dogma of the anti-obesity crusade.  To which (pace Hillary Benn) public parks are balm and tasty fries are anathema.

But an often-neglected aspect of the anti-obesity panic is the overtone of class and the undertone of race. In Leytonstone, for instance, it turns out that the community has been troubled by the profusion of cheap eating establishments, especially in regard to the “anti-social behaviour” that it supposedly brings.

Yet, as Hayes notes at Spiked, it was a Jamaican establishment that was singled out for closure – while more echt-English outlets, like fish-and-chips shops, have been ignored.  The decision that behavior is anti-social being always in the eyes of the beholder – or the skin color of the beheld.

In most of the developed world, fatness is more common among the poor.  In the U.S., it is far more common among African Americans.  Obesity is a marker for being out of power.  To assert that you are against obesity is to state that you intend to identify with those who have power, and mean to keep it.  You can wag your finger at the misdemeanants who eat fast food and fail to exercise — without having to come out and say that what is really troubling you is that your people are starting to look like those people – like the poor, like the dark-complected … like the fat.

No wonder the anti-obesity rhetoric has heated up in Britain, and is catching on in Europe.  It’s a winning way to wage the war against the poor and unentitled, without having to seem arrogant or racist.