Sneeze_l April 2011

sneeze_l@email.rutgers.edu

25 participants
46 discussions

Comments on documentaries: Food, Inc. & Fresh?
by Suzy Pelican 06 Dec '13

06 Dec '13

SNE and F&NSPEC listserv members: **Apologies for any duplicate messages** I am hoping some of you may be able to point me toward information I think must be out there...but that I haven't been able to find! I've seen both "Food Inc." and "Fresh" - two recently released documentaries about the contemporary U.S. food system, with emphasis on serious problems created by factory farms and other practices common within large-scale agricultural operations. These are powerful and thought-provoking films, and they put forth - visually and orally - some critical issues (health, ethical, environmental to name just a few) for all to consider. That said, I am also interested in viewers who may question some of the perspectives/facts shared in either or both of these films. As I said above, I know the films raise critical issues, but I sense that some of the films' generalities might be overstated. (Admittedly, I may be wrong in this, but I'd like a broader foundation for evaluation than just my own inadequate knowledge base!) Thanks, in advance, for any insights you could share with me and/or any references/websites/etc. you could point me toward. Suzy Suzanne Pelican, MS, RD Food & Nutrition Specialist / WIN Wyoming Coordinator Family & Consumer Sciences University of Wyoming Cooperative Extension Service Dept. 3354, 1000 E. University Laramie, WY 82071 307-766-5177; fax: 307-766-5686 pelican(a)uwyo.edu www.uwyo.edu/cesnutrition www.uwyo.edu/winwyoming

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UMass Assistant Professor Nutrition
by Nancy L Cohen, PhD,RD 04 Aug '11

04 Aug '11

Dear Colleagues: Attached is a position description for a new tenure-track faculty position in Nutrition at the UMass-Amherst. We would appreciate it greatly if you could post or send this to potentially interested individuals. Thank you! Sincerely, Nancy Cohen, PhD,RD,LDN Assistant Professor Department of Nutrition, University of Massachusetts Amherst The Department of Nutrition is seeking applications for a tenure-track 9-month Assistant Professor position. The faculty member will be in the Department of Nutrition with affiliation as Honors Faculty in the Commonwealth Honors College, and is expected to contribute to teaching and mentoring in the departmental Honors program. Preferred areas of interest include dietary intake methodology and interventions; eating patterns and diets in diverse populations; nutritional epidemiology and biomarker studies; and nutrition, physical activity and prevention of obesity, diabetes, or other chronic diseases. Shared laboratory space available for cell culture, biomarker assessment, or other related laboratory activities. Doctorate in Nutrition or closely related field required; Post-doctoral research experience preferred; R.D. desirable. Must have strong demonstrated ability or potential in research and teaching, and ability to communicate effectively both orally and in writing. Duties include: Establish and develop an active research program with an independent base of support funds; advise undergraduate nutrition majors and guide graduate student and honors research; teach undergraduate and graduate-level nutrition courses to a diverse body of student learners including general education courses to Commonwealth Honors College students; develop courses in areas of expertise. Starting Date: September 1, 2011. Review of applications will begin January 10, 2011 and will continue until position is filled. Please submit a cover letter with statement of accomplishments, teaching philosophy and future research plans along with a curriculum vitae, and arrange for three letters of reference to be sent to: Dr. Alayne Ronnenberg, Department of Nutrition, Chenoweth Laboratory, University of Massachusetts, Amherst, MA 01003-9282; alayner(a)nutrition.umass.edu (413) 545-0740. The University of Massachusetts at Amherst is an Affirmative Action/Equal Opportunity Employer. Women and members of minority groups are encouraged to apply.

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FW: question on vitamins and autism
by Drake, Linda 09 May '11

09 May '11

Received this question : Do you know anyone who works on vitamins? For autism there are some recommendations for super high doses of B6 which throws me especially since for 3 year olds and especially since this 3 yr old has levels above normal range already but in safe range. Wondering what would affect blood levels in first place as he takes just an RDA level vitamin now. Any thoughts on this?? Linda T. Drake, M.S. Nutritionist and Program Director UCONN Expanded Food and Nutrition Education Program (EFNEP) Department of Nutritional Sciences 3624 Horsebarn Rd. Ext. Storrs, CT 06269-4017 Phone: 860-486-1783 Fax: 860-486-3674 E-Mail: linda.drake(a)uconn.edu<mailto:linda.drake@uconn.edu> ________________________________

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Slots still available: Summer Practicum in Sustainable Farming & Local Food Systems
by Jennifer Lynn Wilkins 29 Apr '11

29 Apr '11

Dear Educators, Please share with young constituents who may be interested. Best, Jennifer ________________________________ Jennifer L. Wilkins, PhD, RD Senior Extension Associate Community Coordinator, Cornell Dietetic Internship Program Division of Nutritional Sciences Cornell University Ithaca, NY 14850 phone: 607.255.2730 cell: 607.227.7259 From: Joanna J Green <joannajgreen(a)gmail.com<mailto:joannajgreen@gmail.com>> Date: Thu, 28 Apr 2011 12:46:43 -0400 Subject: Summer Practicum in Sustainable Farming and Local Food Systems Looking for an unforgettable summer experience? Want to challenge yourself both academically and physically? Want to get connected with Ithaca’s amazing local food pioneers? Experience the world of sustainable farming this summer! Enroll now in the Summer Practicum in Sustainable Farming & Local Food Systems Offered by the Groundswell Center for Local Food & Farming in cooperation with Tompkins Cortland Community College. This 8-week, 6-credit course features weekly field trips to local farms, guest lecturers from Ithaca's thriving local food system, essential readings, critical discussions, and immersion in the operation of West Haven Farm, a successful organic CSA farm located at EcoVillage in Ithaca, NY. Open to students and community members age 18 and up Apply online at www.groundswellcenter.org<http://www.groundswellcenter.org/> -- Joanna Green, Director Groundswell Center for Local Food & Farming PO Box 6679 Ithaca, NY 14851-6679 607-379-9270 www.groundswellcenter.org<http://www.groundswellcenter.org>

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May Food, Nutrition & Health Calendar now posted: "Save Time & Do More" with May resources, recipes & related links
by Alice C Henneman 28 Apr '11

28 Apr '11

Hi Everyone, Our May Food, Nutrition & Health Calendar citing national days, weeks, and months occurring in May is now posted at: http://food.unl.edu/web/fnh/may Our goal is to help you "Save Time & Do More" by providing free resources, recipes and related links to help you promote food, nutrition and health during May in articles, blogs, presentations, etc. You're welcome to distribute and reproduce these materials for educational purposes. Alice ---------------------------------------------------------------- Alice Henneman, MS, RD, Extension Educator University of Nebraska-Lincoln Extension in Lancaster County 444 Cherrycreek Rd., Ste. A, Lincoln, NE 68528 USA ahennema(a)unlnotes.unl.edu 402/441-7180 Fax: 402/441-7148 >> Website: Connecting you to information, resources & food experts from farm to fork at http://food.unl.edu >> Youtube: http://www.youtube.com/alicehenneman >> Slideshare: http://www.slideshare.net/alicehenneman >> Twitter: http://twitter.com/alicehenneman >> NEW: http://food.unl.edu/UrbanAg >> NEW: Dietary Guidelines PowerPoint (free) at http://bit.ly/hBJuKy

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U.S. farmers look to broader strategies to battle glyphosate resistant weeds
by Chris McCullum 28 Apr '11

28 Apr '11

Dear SNEEZEers: Here is an article that may be of interest to those of you following issues related to sustainable agriculture, including the members of the Division of Sustainable Food Systems (DSFS). See below URL for more information. Chris McCullum-Gomez Independent Food and Nutrition Consultant Houston, TX ph: 281-597-8482 fax: 281-597-8482 cell: 832-563-0261 NOTICE: This email message and/or its attachments may contain information that is confidential or restricted. It is intended only for the individuals name as recipients in the message. If you are NOT an authorized recipient, you are prohibited from using, delivering, distributing, printing, copying, or disclosing the message or content to others and must delete the message from your computer. If you have received this message in error, please notify the sender by return mail. > TITLE: FARMERS LOOK TO BROADER STRATEGIES TO BATTLE WEEDS > > SOURCE: Ag Journal, USA > > AUTHOR: Candace Krebs > > URL: http://www.agjournalonline.com/features/x698043326/Farmers-look-to-broader-… > > DATE: 11.03.2011 > > SUMMARY: "farmers who rely too heavily on popular herbicides eventually exhaust their usefulness and are forced to look for something new. But herbicides are costly and time-consuming to bring to market. ”We can be the example for states that have abused herbicide technology,” the Oklahoma State University weed specialist said earlier this year, speaking at a conservation tillage meeting in Northwest Oklahoma. ”In some states, they’ve had to move away from no-till because herbicides have been used so exclusively.”"

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In Fighting Anorexia, Recovery Is Elusive
by Joanne Ikeda 27 Apr '11

27 Apr '11

*This article shows how difficult it is to treat full blown eating disorders. * * In Fighting Anorexia, Recovery Is Elusive* http://www.nytimes.com/2011/04/26/health/26anorexia.html?ref=health <http://mailer.eatright.org/t/4683/1430958/7006/0/> -- Joanne P. Ikeda, MA, RD Nutritionist Emeritus Department of Nutritional Sciences University of California, Berkeley Current 1777 View Drive San Leandro, CA94577 PH 510-895-5300 Emial: jikeda(a)berkeley.edu

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GAPS diet for rheumatoid arthritis and eczema
by aainz＠aol.com 25 Apr '11

25 Apr '11

I received an inquiry about the benefit of GAPS diet for RA and eczema. I am familiar with the benefits of a similar diet-- Specific carbohydrate diet-- for Inflammatory Bowl Disease, but don't have any information about GAPS or SCD for RA or eczema. I would be grateful for any information, either positive or negative. Thank you very much, Anita Abraham-Inz, MS,RD Nutrition Consultant

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diet drug - Orlistat (Alli) linked to kidney/pancreas damage
by Joanne Ikeda 23 Apr '11

23 Apr '11

Joanne P. Ikeda, MA, RD Nutritionist Emeritus Department of Nutritional Sciences University of California, Berkeley Current 1777 View Drive San Leandro, CA94577 PH 510-895-5300 Emial: jikeda(a)berkeley.edu GlaxoSmithKline has announced it's dropping the OTC version of Orlistat i.e. Alli, a diet drug from those drugs they sell. Ironically this announcement came after a study found a link between this drug and kidney damage as well as several cases of pancreatitis (last year the FDA warned of a possibility of liver toxicity from Orlistat): http://www.gsk.com/media/pressreleases/2011/2011-pressrelease-402902.htm The study reporting adverse effects of kidney and pancreas damage in a percentage of those using Orlistat or Alli http://www.medscape.com/viewarticle/740855 Cite: Weir MA, Beyea MM, Gomes T, et al. Orlistat and acute kidney injury: An analysis of 953 patients. Arch Intern Med 2011; 171:703-704. Abstract

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Fwd: [Nutrition_Reports] Is Sugar Toxic? - NYTimes.com
by Joanne Ikeda 23 Apr '11

23 Apr '11

Joanne P. Ikeda, MA, RD Nutritionist Emeritus Department of Nutritional Sciences University of California, Berkeley Current 1777 View Drive San Leandro, CA94577 PH 510-895-5300 Emial: jikeda(a)berkeley.edu -------- Original Message -------- Subject: [Nutrition_Reports] Is Sugar Toxic? - NYTimes.com Date: Sun, 17 Apr 2011 08:13:06 -0500 From: Kathrynne <fivestar(a)nutritionucanlivewith.com> Reply-To: Nutrition_Reports(a)yahoogroups.com To: Nutrition_Reports(a)yahoogroups.com <Nutrition_Reports(a)yahoogroups.com> Is Sugar Toxic? Photo Illustration by Kenji Aoki for The New York Times By GARY TAUBES Published: April 13, 2011 On May 26, 2009, Robert Lustig gave a lecture called “Sugar: The Bitter Truth,” which was posted on YouTube the following July. Since then, it has been viewed well over 800,000 times, gaining new viewers at a rate of about 50,000 per month, fairly remarkable numbers for a 90-minute discussion of the nuances of fructose biochemistry and human physiology. Q. and A With Gary Taubes What the average American consumes in added sugars: Graphic High-Fructose Corn Syrup Consumption Graphic Sugar Consumption Lustig is a specialist on pediatric hormone disorders and the leading expert in childhood obesity at the University of California, San Francisco, School of Medicine, which is one of the best medical schools in the country. He published his first paper on childhood obesity a dozen years ago, and he has been treating patients and doing research on the disorder ever since. The viral success of his lecture, though, has little to do with Lustig’s impressive credentials and far more with the persuasive case he makes that sugar is a “toxin” or a “poison,” terms he uses together 13 times through the course of the lecture, in addition to the five references to sugar as merely “evil.” And by “sugar,” Lustig means not only the white granulated stuff that we put in coffee and sprinkle on cereal — technically known as sucrose — but also high-fructose corn syrup, which has already become without Lustig’s help what he calls “the most demonized additive known to man.” It doesn’t hurt Lustig’s cause that he is a compelling public speaker. His critics argue that what makes him compelling is his practice of taking suggestive evidence and insisting that it’s incontrovertible. Lustig certainly doesn’t dabble in shades of gray. Sugar is not just an empty calorie, he says; its effect on us is much more insidious. “It’s not about the calories,” he says. “It has nothing to do with the calories. It’s a poison by itself.” If Lustig is right, then our excessive consumption of sugar is the primary reason that the numbers of obese and diabetic Americans have skyrocketed in the past 30 years. But his argument implies more than that. If Lustig is right, it would mean that sugar is also the likely dietary cause of several other chronic ailments widely considered to be diseases of Western lifestyles — heart disease, hypertension and many common cancers among them. The number of viewers Lustig has attracted suggests that people are paying attention to his argument. When I set out to interview public health authorities and researchers for this article, they would often initiate the interview with some variation of the comment “surely you’ve spoken to Robert Lustig,” not because Lustig has done any of the key research on sugar himself, which he hasn’t, but because he’s willing to insist publicly and unambiguously, when most researchers are not, that sugar is a toxic substance that people abuse. In Lustig’s view, sugar should be thought of, like cigarettes and alcohol, as something that’s killing us. This brings us to the salient question: Can sugar possibly be as bad as Lustig says it is? It’s one thing to suggest, as most nutritionists will, that a healthful diet includes more fruits and vegetables, and maybe less fat, red meat and salt, or less of everything. It’s entirely different to claim that one particularly cherished aspect of our diet might not just be an unhealthful indulgence but actually be toxic, that when you bake your children a birthday cake or give them lemonade on a hot summer day, you may be doing them more harm than good, despite all the love that goes with it. Suggesting that sugar might kill us is what zealots do. But Lustig, who has genuine expertise, has accumulated and synthesized a mass of evidence, which he finds compelling enough to convict sugar. His critics consider that evidence insufficient, but there’s no way to know who might be right, or what must be done to find out, without discussing it. If I didn’t buy this argument myself, I wouldn’t be writing about it here. And I also have a disclaimer to acknowledge. I’ve spent much of the last decade doing journalistic research on diet and chronic disease — some of the more contrarian findings, on dietary fat, appeared in this magazine —– and I have come to conclusions similar to Lustig’s. The history of the debate over the health effects of sugar has gone on far longer than you might imagine. It is littered with erroneous statements and conclusions because even the supposed authorities had no true understanding of what they were talking about. They didn’t know, quite literally, what they meant by the word “sugar” and therefore what the implications were. So let’s start by clarifying a few issues, beginning with Lustig’s use of the word “sugar” to mean both sucrose — beet and cane sugar, whether white or brown — and high-fructose corn syrup. This is a critical point, particularly because high-fructose corn syrup has indeed become “the flashpoint for everybody’s distrust of processed foods,” says Marion Nestle, a New York University nutritionist and the author of “Food Politics.” This development is recent and borders on humorous. In the early 1980s, high-fructose corn syrup replaced sugar in sodas and other products in part because refined sugar then had the reputation as a generally noxious nutrient. (“Villain in Disguise?” asked a headline in this paper in 1977, before answering in the affirmative.) High-fructose corn syrup was portrayed by the food industry as a healthful alternative, and that’s how the public perceived it. It was also cheaper than sugar, which didn’t hurt its commercial prospects. Now the tide is rolling the other way, and refined sugar is making a commercial comeback as the supposedly healthful alternative to this noxious corn-syrup stuff. “Industry after industry is replacing their product with sucrose and advertising it as such — ‘No High-Fructose Corn Syrup,’ ” Nestle notes. But marketing aside, the two sweeteners are effectively identical in their biological effects. “High-fructose corn syrup, sugar — no difference,” is how Lustig put it in a lecture that I attended in San Francisco last December. “The point is they’re each bad — equally bad, equally poisonous.” Refined sugar (that is, sucrose) is made up of a molecule of the carbohydrate glucose, bonded to a molecule of the carbohydrate fructose — a 50-50 mixture of the two. The fructose, which is almost twice as sweet as glucose, is what distinguishes sugar from other carbohydrate-rich foods like bread or potatoes that break down upon digestion to glucose alone. The more fructose in a substance, the sweeter it will be. High-fructose corn syrup, as it is most commonly consumed, is 55 percent fructose, and the remaining 45 percent is nearly all glucose. It was first marketed in the late 1970s and was created to be indistinguishable from refined sugar when used in soft drinks. Because each of these sugars ends up as glucose and fructose in our guts, our bodies react the same way to both, and the physiological effects are identical. In a 2010 review of the relevant science, Luc Tappy, a researcher at the University of Lausanne in Switzerland who is considered by biochemists who study fructose to be the world’s foremost authority on the subject, said there was “not the single hint” that H.F.C.S. was more deleterious than other sources of sugar. The question, then, isn’t whether high-fructose corn syrup is worse than sugar; it’s what do they do to us, and how do they do it? The conventional wisdom has long been that the worst that can be said about sugars of any kind is that they cause tooth decay and represent “empty calories” that we eat in excess because they taste so good. By this logic, sugar-sweetened beverages (or H.F.C.S.-sweetened beverages, as the Sugar Association prefers they are called) are bad for us not because there’s anything particularly toxic about the sugar they contain but just because people consume too many of them. Those organizations that now advise us to cut down on our sugar consumption — the Department of Agriculture, for instance, in its recent Dietary Guidelines for Americans, or the American Heart Association in guidelines released in September 2009 (of which Lustig was a co-author) — do so for this reason. Refined sugar and H.F.C.S. don’t come with any protein, vitamins, minerals, antioxidants or fiber, and so they either displace other more nutritious elements of our diet or are eaten over and above what we need to sustain our weight, and this is why we get fatter. Whether the empty-calories argument is true, it’s certainly convenient. It allows everyone to assign blame for obesity and, by extension, diabetes — two conditions so intimately linked that some authorities have taken to calling them “diabesity” — to overeating of all foods, or underexercising, because a calorie is a calorie. “This isn’t about demonizing any industry,” as Michelle Obama said about her Let’s Move program to combat the epidemic of childhood obesity. Instead it’s about getting us — or our children — to move more and eat less, reduce our portion sizes, cut back on snacks. Lustig’s argument, however, is not about the consumption of empty calories — and biochemists have made the same case previously, though not so publicly. It is that sugar has unique characteristics, specifically in the way the human body metabolizes the fructose in it, that may make it singularly harmful, at least if consumed in sufficient quantities. The phrase Lustig uses when he describes this concept is “isocaloric but not isometabolic.” This means we can eat 100 calories of glucose (from a potato or bread or other starch) or 100 calories of sugar (half glucose and half fructose), and they will be metabolized differently and have a different effect on the body. The calories are the same, but the metabolic consequences are quite different. The fructose component of sugar and H.F.C.S. is metabolized primarily by the liver, while the glucose from sugar and starches is metabolized by every cell in the body. Consuming sugar (fructose and glucose) means more work for the liver than if you consumed the same number of calories of starch (glucose). And if you take that sugar in liquid form — soda or fruit juices — the fructose and glucose will hit the liver more quickly than if you consume them, say, in an apple (or several apples, to get what researchers would call the equivalent dose of sugar). The speed with which the liver has to do its work will also affect how it metabolizes the fructose and glucose. In animals, or at least in laboratory rats and mice, it’s clear that if the fructose hits the liver in sufficient quantity and with sufficient speed, the liver will convert much of it to fat. This apparently induces a condition known as insulin resistance, which is now considered the fundamental problem in obesity, and the underlying defect in heart disease and in the type of diabetes, type 2, that is common to obese and overweight individuals. It might also be the underlying defect in many cancers. If what happens in laboratory rodents also happens in humans, and if we are eating enough sugar to make it happen, then we are in trouble. The last time an agency of the federal government looked into the question of sugar and health in any detail was in 2005, in a report by the Institute of Medicine, a branch of the National Academies. The authors of the report acknowledged that plenty of evidence suggested that sugar could increase the risk of heart disease and diabetes — even raising LDL cholesterol, known as the “bad cholesterol”—– but did not consider the research to be definitive. There was enough ambiguity, they concluded, that they couldn’t even set an upper limit on how much sugar constitutes too much. Referring back to the 2005 report, an Institute of Medicine report released last fall reiterated, “There is a lack of scientific agreement about the amount of sugars that can be consumed in a healthy diet.” This was the same conclusion that the Food and Drug Administration came to when it last assessed the sugar question, back in 1986. The F.D.A. report was perceived as an exoneration of sugar, and that perception influenced the treatment of sugar in the landmark reports on diet and health that came after. The Sugar Association and the Corn Refiners Association have also portrayed the 1986 F.D.A. report as clearing sugar of nutritional crimes, but what it concluded was actually something else entirely. To be precise, the F.D.A. reviewers said that other than its contribution to calories, “no conclusive evidence on sugars demonstrates a hazard to the general public when sugars are consumed at the levels that are now current.” This is another way of saying that the evidence by no means refuted the kinds of claims that Lustig is making now and other researchers were making then, just that it wasn’t definitive or unambiguous. What we have to keep in mind, says Walter Glinsmann, the F.D.A. administrator who was the primary author on the 1986 report and who now is an adviser to the Corn Refiners Association, is that sugar and high-fructose corn syrup might be toxic, as Lustig argues, but so might any substance if it’s consumed in ways or in quantities that are unnatural for humans. The question is always at what dose does a substance go from being harmless to harmful? How much do we have to consume before this happens? When Glinsmann and his F.D.A. co-authors decided no conclusive evidence demonstrated harm at the levels of sugar then being consumed, they estimated those levels at 40 pounds per person per year beyond what we might get naturally in fruits and vegetables — 40 pounds per person per year of “added sugars” as nutritionists now call them. This is 200 calories per day of sugar, which is less than the amount in a can and a half of Coca-Cola or two cups of apple juice. If that’s indeed all we consume, most nutritionists today would be delighted, including Lustig. But 40 pounds per year happened to be 35 pounds less than what Department of Agriculture analysts said we were consuming at the time — 75 pounds per person per year — and the U.S.D.A. estimates are typically considered to be the most reliable. By the early 2000s, according to the U.S.D.A., we had increased our consumption to more than 90 pounds per person per year. That this increase happened to coincide with the current epidemics of obesity and diabetes is one reason that it’s tempting to blame sugars — sucrose and high-fructose corn syrup — for the problem. In 1980, roughly one in seven Americans was obese, and almost six million were diabetic, and the obesity rates, at least, hadn’t changed significantly in the 20 years previously. By the early 2000s, when sugar consumption peaked, one in every three Americans was obese, and 14 million were diabetic. This correlation between sugar consumption and diabetes is what defense attorneys call circumstantial evidence. It’s more compelling than it otherwise might be, though, because the last time sugar consumption jumped markedly in this country, it was also associated with a diabetes epidemic. In the early 20th century, many of the leading authorities on diabetes in North America and Europe (including Frederick Banting, who shared the 1923 Nobel Prize for the discovery of insulin) suspected that sugar causes diabetes based on the observation that the disease was rare in populations that didn’t consume refined sugar and widespread in those that did. In 1924, Haven Emerson, director of the institute of public health at Columbia University, reported that diabetes deaths in New York City had increased as much as 15-fold since the Civil War years, and that deaths increased as much as fourfold in some U.S. cities between 1900 and 1920 alone. This coincided, he noted, with an equally significant increase in sugar consumption — almost doubling from 1890 to the early 1920s — with the birth and subsequent growth of the candy and soft-drink industries. Emerson’s argument was countered by Elliott Joslin, a leading authority on diabetes, and Joslin won out. But his argument was fundamentally flawed. Simply put, it went like this: The Japanese eat lots of rice, and Japanese diabetics are few and far between; rice is mostly carbohydrate, which suggests that sugar, also a carbohydrate, does not cause diabetes. But sugar and rice are not identical merely because they’re both carbohydrates. Joslin could not know at the time that the fructose content of sugar affects how we metabolize it. Joslin was also unaware that the Japanese ate little sugar. In the early 1960s, the Japanese were eating as little sugar as Americans were a century earlier, maybe less, which means that the Japanese experience could have been used to support the idea that sugar causes diabetes. Still, with Joslin arguing in edition after edition of his seminal textbook that sugar played no role in diabetes, it eventually took on the aura of undisputed truth. Until Lustig came along, the last time an academic forcefully put forward the sugar-as-toxin thesis was in the 1970s, when John Yudkin, a leading authority on nutrition in the United Kingdom, published a polemic on sugar called “Sweet and Dangerous.” Through the 1960s Yudkin did a series of experiments feeding sugar and starch to rodents, chickens, rabbits, pigs and college students. He found that the sugar invariably raised blood levels of triglycerides (a technical term for fat), which was then, as now, considered a risk factor for heart disease. Sugar also raised insulin levels in Yudkin’s experiments, which linked sugar directly to type 2 diabetes. Few in the medical community took Yudkin’s ideas seriously, largely because he was also arguing that dietary fat and saturated fat were harmless. This set Yudkin’s sugar hypothesis directly against the growing acceptance of the idea, prominent to this day, that dietary fat was the cause of heart disease, a notion championed by the University of Minnesota nutritionist Ancel Keys. A common assumption at the time was that if one hypothesis was right, then the other was most likely wrong. Either fat caused heart disease by raising cholesterol, or sugar did by raising triglycerides. “The theory that diets high in sugar are an important cause of atherosclerosis and heart disease does not have wide support among experts in the field, who say that fats and cholesterol are the more likely culprits,” as Jane E. Brody wrote in The Times in 1977. At the time, many of the key observations cited to argue that dietary fat caused heart disease actually support the sugar theory as well. During the Korean War, pathologists doing autopsies on American soldiers killed in battle noticed that many had significant plaques in their arteries, even those who were still teenagers, while the Koreans killed in battle did not. The atherosclerotic plaques in the Americans were attributed to the fact that they ate high-fat diets and the Koreans ate low-fat. But the Americans were also eating high-sugar diets, while the Koreans, like the Japanese, were not. In 1970, Keys published the results of a landmark study in nutrition known as the Seven Countries Study. Its results were perceived by the medical community and the wider public as compelling evidence that saturated-fat consumption is the best dietary predictor of heart disease. But sugar consumption in the seven countries studied was almost equally predictive. So it was possible that Yudkin was right, and Keys was wrong, or that they could both be right. The evidence has always been able to go either way. European clinicians tended to side with Yudkin; Americans with Keys. The situation wasn’t helped, as one of Yudkin’s colleagues later told me, by the fact that “there was quite a bit of loathing” between the two nutritionists themselves. In 1971, Keys published an article attacking Yudkin and describing his evidence against sugar as “flimsy indeed.” He treated Yudkin as a figure of scorn, and Yudkin never managed to shake the portrayal. By the end of the 1970s, any scientist who studied the potentially deleterious effects of sugar in the diet, according to Sheldon Reiser, who did just that at the U.S.D.A.’s Carbohydrate Nutrition Laboratory in Beltsville, Md., and talked about it publicly, was endangering his reputation. “Yudkin was so discredited,” Reiser said to me. “He was ridiculed in a way. And anybody else who said something bad about sucrose, they’d say, ‘He’s just like Yudkin.’ ” What has changed since then, other than Americans getting fatter and more diabetic? It wasn’t so much that researchers learned anything particularly new about the effects of sugar or high-fructose corn syrup in the human body. Rather the context of the science changed: physicians and medical authorities came to accept the idea that a condition known as metabolic syndrome is a major, if not the major, risk factor for heart disease and diabetes. The Centers for Disease Control and Prevention now estimate that some 75 million Americans have metabolic syndrome. For those who have heart attacks, metabolic syndrome will very likely be the reason. The first symptom doctors are told to look for in diagnosing metabolic syndrome is an expanding waistline. This means that if you’re overweight, there’s a good chance you have metabolic syndrome, and this is why you’re more likely to have a heart attack or become diabetic (or both) than someone who’s not. Although lean individuals, too, can have metabolic syndrome, and they are at greater risk of heart disease and diabetes than lean individuals without it. Having metabolic syndrome is another way of saying that the cells in your body are actively ignoring the action of the hormone insulin — a condition known technically as being insulin-resistant. Because insulin resistance and metabolic syndrome still get remarkably little attention in the press (certainly compared with cholesterol), let me explain the basics. You secrete insulin in response to the foods you eat — particularly the carbohydrates — to keep blood sugar in control after a meal. When your cells are resistant to insulin, your body (your pancreas, to be precise) responds to rising blood sugar by pumping out more and more insulin. Eventually the pancreas can no longer keep up with the demand or it gives in to what diabetologists call “pancreatic exhaustion.” Now your blood sugar will rise out of control, and you’ve got diabetes. Not everyone with insulin resistance becomes diabetic; some continue to secrete enough insulin to overcome their cells’ resistance to the hormone. But having chronically elevated insulin levels has harmful effects of its own — heart disease, for one. A result is higher triglyceride levels and blood pressure, lower levels of HDL cholesterol (the “good cholesterol”), further worsening the insulin resistance — this is metabolic syndrome. When physicians assess your risk of heart disease these days, they will take into consideration your LDL cholesterol (the bad kind), but also these symptoms of metabolic syndrome. The idea, according to Scott Grundy, a University of Texas Southwestern Medical Center nutritionist and the chairman of the panel that produced the last edition of the National Cholesterol Education Program guidelines, is that heart attacks 50 years ago might have been caused by high cholesterol — particularly high LDL cholesterol — but since then we’ve all gotten fatter and more diabetic, and now it’s metabolic syndrome that’s the more conspicuous problem. This raises two obvious questions. The first is what sets off metabolic syndrome to begin with, which is another way of asking, What causes the initial insulin resistance? There are several hypotheses, but researchers who study the mechanisms of insulin resistance now think that a likely cause is the accumulation of fat in the liver. When studies have been done trying to answer this question in humans, says Varman Samuel, who studies insulin resistance at Yale School of Medicine, the correlation between liver fat and insulin resistance in patients, lean or obese, is “remarkably strong.” What it looks like, Samuel says, is that “when you deposit fat in the liver, that’s when you become insulin-resistant.” That raises the other obvious question: What causes the liver to accumulate fat in humans? A common assumption is that simply getting fatter leads to a fatty liver, but this does not explain fatty liver in lean people. Some of it could be attributed to genetic predisposition. But harking back to Lustig, there’s also the very real possibility that it is caused by sugar. As it happens, metabolic syndrome and insulin resistance are the reasons that many of the researchers today studying fructose became interested in the subject to begin with. If you want to cause insulin resistance in laboratory rats, says Gerald Reaven, the Stanford University diabetologist who did much of the pioneering work on the subject, feeding them diets that are mostly fructose is an easy way to do it. It’s a “very obvious, very dramatic” effect, Reaven says. By the early 2000s, researchers studying fructose metabolism had established certain findings unambiguously and had well-established biochemical explanations for what was happening. Feed animals enough pure fructose or enough sugar, and their livers convert the fructose into fat — the saturated fatty acid, palmitate, to be precise, that supposedly gives us heart disease when we eat it, by raising LDL cholesterol. The fat accumulates in the liver, and insulin resistance and metabolic syndrome follow. Michael Pagliassotti, a Colorado State University biochemist who did many of the relevant animal studies in the late 1990s, says these changes can happen in as little as a week if the animals are fed sugar or fructose in huge amounts — 60 or 70 percent of the calories in their diets. They can take several months if the animals are fed something closer to what humans (in America) actually consume — around 20 percent of the calories in their diet. Stop feeding them the sugar, in either case, and the fatty liver promptly goes away, and with it the insulin resistance. Similar effects can be shown in humans, although the researchers doing this work typically did the studies with only fructose — as Luc Tappy did in Switzerland or Peter Havel and Kimber Stanhope did at the University of California, Davis — and pure fructose is not the same thing as sugar or high-fructose corn syrup. When Tappy fed his human subjects the equivalent of the fructose in 8 to 10 cans of Coke or Pepsi a day — a “pretty high dose,” he says —– their livers would start to become insulin-resistant, and their triglycerides would go up in just a few days. With lower doses, Tappy says, just as in the animal research, the same effects would appear, but it would take longer, a month or more. Despite the steady accumulation of research, the evidence can still be criticized as falling far short of conclusive. The studies in rodents aren’t necessarily applicable to humans. And the kinds of studies that Tappy, Havel and Stanhope did — having real people drink beverages sweetened with fructose and comparing the effect with what happens when the same people or others drink beverages sweetened with glucose — aren’t applicable to real human experience, because we never naturally consume pure fructose. We always take it with glucose, in the nearly 50-50 combinations of sugar or high-fructose corn syrup. And then the amount of fructose or sucrose being fed in these studies, to the rodents or the human subjects, has typically been enormous. This is why the research reviews on the subject invariably conclude that more research is necessary to establish at what dose sugar and high-fructose corn syrup start becoming what Lustig calls toxic. “There is clearly a need for intervention studies,” as Tappy recently phrased it in the technical jargon of the field, “in which the fructose intake of high-fructose consumers is reduced to better delineate the possible pathogenic role of fructose. At present, short-term-intervention studies, however, suggest that a high-fructose intake consisting of soft drinks, sweetened juices or bakery products can increase the risk of metabolic and cardiovascular diseases.” In simpler language, how much of this stuff do we have to eat or drink, and for how long, before it does to us what it does to laboratory rats? And is that amount more than we’re already consuming? Unfortunately, we’re unlikely to learn anything conclusive in the near future. As Lustig points out, sugar and high-fructose corn syrup are certainly not “acute toxins” of the kind the F.D.A. typically regulates and the effects of which can be studied over the course of days or months. The question is whether they’re “chronic toxins,” which means “not toxic after one meal, but after 1,000 meals.” This means that what Tappy calls “intervention studies” have to go on for significantly longer than 1,000 meals to be meaningful. At the moment, the National Institutes of Health are supporting surprisingly few clinical trials related to sugar and high-fructose corn syrup in the U.S. All are small, and none will last more than a few months. Lustig and his colleagues at U.C.S.F. — including Jean-Marc Schwarz, whom Tappy describes as one of the three best fructose biochemists in the world — are doing one of these studies. It will look at what happens when obese teenagers consume no sugar other than what they might get in fruits and vegetables. Another study will do the same with pregnant women to see if their babies are born healthier and leaner. Only one study in this country, by Havel and Stanhope at the University of California, Davis, is directly addressing the question of how much sugar is required to trigger the symptoms of insulin resistance and metabolic syndrome. Havel and Stanhope are having healthy people drink three sugar- or H.F.C.S.-sweetened beverages a day and then seeing what happens. The catch is that their study subjects go through this three-beverage-a-day routine for only two weeks. That doesn’t seem like a very long time — only 42 meals, not 1,000 — but Havel and Stanhope have been studying fructose since the mid-1990s, and they seem confident that two weeks is sufficient to see if these sugars cause at least some of the symptoms of metabolic syndrome. So the answer to the question of whether sugar is as bad as Lustig claims is that it certainly could be. It very well may be true that sugar and high-fructose corn syrup, because of the unique way in which we metabolize fructose and at the levels we now consume it, cause fat to accumulate in our livers followed by insulin resistance and metabolic syndrome, and so trigger the process that leads to heart disease, diabetes and obesity. They could indeed be toxic, but they take years to do their damage. It doesn’t happen overnight. Until long-term studies are done, we won’t know for sure. One more question still needs to be asked, and this is what my wife, who has had to live with my journalistic obsession on this subject, calls the Grinch-trying-to-steal-Christmas problem. What are the chances that sugar is actually worse than Lustig says it is? One of the diseases that increases in incidence with obesity, diabetes and metabolic syndrome is cancer. This is why I said earlier that insulin resistance may be a fundamental underlying defect in many cancers, as it is in type 2 diabetes and heart disease. The connection between obesity, diabetes and cancer was first reported in 2004 in large population studies by researchers from the World Health Organization’s International Agency for Research on Cancer. It is not controversial. What it means is that you are more likely to get cancer if you’re obese or diabetic than if you’re not, and you’re more likely to get cancer if you have metabolic syndrome than if you don’t. This goes along with two other observations that have led to the well-accepted idea that some large percentage of cancers are caused by our Western diets and lifestyles. This means they could actually be prevented if we could pinpoint exactly what the problem is and prevent or avoid that. One observation is that death rates from cancer, like those from diabetes, increased significantly in the second half of the 19th century and the early decades of the 20th. As with diabetes, this observation was accompanied by a vigorous debate about whether those increases could be explained solely by the aging of the population and the use of new diagnostic techniques or whether it was really the incidence of cancer itself that was increasing. “By the 1930s,” as a 1997 report by the World Cancer Research Fund International and the American Institute for Cancer Research explained, “it was apparent that age-adjusted death rates from cancer were rising in the U.S.A.,” which meant that the likelihood of any particular 60-year-old, for instance, dying from cancer was increasing, even if there were indeed more 60-years-olds with each passing year. The second observation was that malignant cancer, like diabetes, was a relatively rare disease in populations that didn’t eat Western diets, and in some of these populations it appeared to be virtually nonexistent. In the 1950s, malignant cancer among the Inuit, for instance, was still deemed sufficiently rare that physicians working in northern Canada would publish case reports in medical journals when they did diagnose a case. In 1984, Canadian physicians published an analysis of 30 years of cancer incidence among Inuit in the western and central Arctic. While there had been a “striking increase in the incidence of cancers of modern societies” including lung and cervical cancer, they reported, there were still “conspicuous deficits” in breast-cancer rates. They could not find a single case in an Inuit patient before 1966; they could find only two cases between 1967 and 1980. Since then, as their diet became more like ours, breast cancer incidence has steadily increased among the Inuit, although it’s still significantly lower than it is in other North American ethnic groups. Diabetes rates in the Inuit have also gone from vanishingly low in the mid-20th century to high today. Now most researchers will agree that the link between Western diet or lifestyle and cancer manifests itself through this association with obesity, diabetes and metabolic syndrome — i.e., insulin resistance. This was the conclusion, for instance, of a 2007 report published by the World Cancer Research Fund and the American Institute for Cancer Research — “Food, Nutrition, Physical Activity and the Prevention of Cancer.” So how does it work? Cancer researchers now consider that the problem with insulin resistance is that it leads us to secrete more insulin, and insulin (as well as a related hormone known as insulin-like growth factor) actually promotes tumor growth. As it was explained to me by Craig Thompson, who has done much of this research and is now president of Memorial Sloan-Kettering Cancer Center in New York, the cells of many human cancers come to depend on insulin to provide the fuel (blood sugar) and materials they need to grow and multiply. Insulin and insulin-like growth factor (and related growth factors) also provide the signal, in effect, to do it. The more insulin, the better they do. Some cancers develop mutations that serve the purpose of increasing the influence of insulin on the cell; others take advantage of the elevated insulin levels that are common to metabolic syndrome, obesity and type 2 diabetes. Some do both. Thompson believes that many pre-cancerous cells would never acquire the mutations that turn them into malignant tumors if they weren’t being driven by insulin to take up more and more blood sugar and metabolize it. What these researchers call elevated insulin (or insulin-like growth factor) signaling appears to be a necessary step in many human cancers, particularly cancers like breast and colon cancer. Lewis Cantley, director of the Cancer Center at Beth Israel Deaconess Medical Center at Harvard Medical School, says that up to 80 percent of all human cancers are driven by either mutations or environmental factors that work to enhance or mimic the effect of insulin on the incipient tumor cells. Cantley is now the leader of one of five scientific “dream teams,” financed by a national coalition called Stand Up to Cancer, to study, in the case of Cantley’s team, precisely this link between a specific insulin-signaling gene (known technically as PI3K) and tumor development in breast and other cancers common to women. Most of the researchers studying this insulin/cancer link seem concerned primarily with finding a drug that might work to suppress insulin signaling in incipient cancer cells and so, they hope, inhibit or prevent their growth entirely. Many of the experts writing about the insulin/cancer link from a public health perspective — as in the 2007 report from the World Cancer Research Fund and the American Institute for Cancer Research — work from the assumption that chronically elevated insulin levels and insulin resistance are both caused by being fat or by getting fatter. They recommend, as the 2007 report did, that we should all work to be lean and more physically active, and that in turn will help us prevent cancer. But some researchers will make the case, as Cantley and Thompson do, that if something other than just being fatter is causing insulin resistance to begin with, that’s quite likely the dietary cause of many cancers. If it’s sugar that causes insulin resistance, they say, then the conclusion is hard to avoid that sugar causes cancer — some cancers, at least — radical as this may seem and despite the fact that this suggestion has rarely if ever been voiced before publicly. For just this reason, neither of these men will eat sugar or high-fructose corn syrup, if they can avoid it. “I have eliminated refined sugar from my diet and eat as little as I possibly can,” Thompson told me, “because I believe ultimately it’s something I can do to decrease my risk of cancer.” Cantley put it this way: “Sugar scares me.” Sugar scares me too, obviously. I’d like to eat it in moderation. I’d certainly like my two sons to be able to eat it in moderation, to not overconsume it, but I don’t actually know what that means, and I’ve been reporting on this subject and studying it for more than a decade. If sugar just makes us fatter, that’s one thing. We start gaining weight, we eat less of it. But we are also talking about things we can’t see — fatty liver, insulin resistance and all that follows. Officially I’m not supposed to worry because the evidence isn’t conclusive, but I do. Gary Taubes (gataubes(a)gmail.com) is a Robert Wood Johnson Foundation independent investigator in health policy and the author of “Why We Get Fat.” Editor: Vera Titunik (v.titunik-MagGroup(a)nytimes.com). http://www.nytimes.com/2011/04/17/magazine/mag-17Sugar-t.html?_r=1&nl=today… ------------------------------------ -- Kathrynne Holden "Parkinson's disease: Guidelines for Medical Nutrition Therapy" http://www.nutritionucanlivewith.com/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Nutrition_Reports/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Nutrition_Reports/join (Yahoo! 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Sneeze_l April 2011