Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

What if It's All Been a Big Fat Lie?
The New York Times Magazine ^ | 07/07/2002 | GARY TAUBES

Posted on 07/05/2002 5:34:43 PM PDT by Pokey78

If the members of the American medical establishment were to have a collective find-yourself-standing-naked-in-Times-Square-type nightmare, this might be it. They spend 30 years ridiculing Robert Atkins, author of the phenomenally-best-selling ''Dr. Atkins' Diet Revolution'' and ''Dr. Atkins' New Diet Revolution,'' accusing the Manhattan doctor of quackery and fraud, only to discover that the unrepentant Atkins was right all along. Or maybe it's this: they find that their very own dietary recommendations -- eat less fat and more carbohydrates -- are the cause of the rampaging epidemic of obesity in America. Or, just possibly this: they find out both of the above are true.

When Atkins first published his ''Diet Revolution'' in 1972, Americans were just coming to terms with the proposition that fat -- particularly the saturated fat of meat and dairy products -- was the primary nutritional evil in the American diet. Atkins managed to sell millions of copies of a book promising that we would lose weight eating steak, eggs and butter to our heart's desire, because it was the carbohydrates, the pasta, rice, bagels and sugar, that caused obesity and even heart disease. Fat, he said, was harmless.

Atkins allowed his readers to eat ''truly luxurious foods without limit,'' as he put it, ''lobster with butter sauce, steak with bearnaise sauce . . . bacon cheeseburgers,'' but allowed no starches or refined carbohydrates, which means no sugars or anything made from flour. Atkins banned even fruit juices, and permitted only a modicum of vegetables, although the latter were negotiable as the diet progressed.

Atkins was by no means the first to get rich pushing a high-fat diet that restricted carbohydrates, but he popularized it to an extent that the American Medical Association considered it a potential threat to our health. The A.M.A. attacked Atkins's diet as a ''bizarre regimen'' that advocated ''an unlimited intake of saturated fats and cholesterol-rich foods,'' and Atkins even had to defend his diet in Congressional hearings.

Thirty years later, America has become weirdly polarized on the subject of weight. On the one hand, we've been told with almost religious certainty by everyone from the surgeon general on down, and we have come to believe with almost religious certainty, that obesity is caused by the excessive consumption of fat, and that if we eat less fat we will lose weight and live longer. On the other, we have the ever-resilient message of Atkins and decades' worth of best-selling diet books, including ''The Zone,'' ''Sugar Busters'' and ''Protein Power'' to name a few. All push some variation of what scientists would call the alternative hypothesis: it's not the fat that makes us fat, but the carbohydrates, and if we eat less carbohydrates we will lose weight and live longer.

The perversity of this alternative hypothesis is that it identifies the cause of obesity as precisely those refined carbohydrates at the base of the famous Food Guide Pyramid -- the pasta, rice and bread -- that we are told should be the staple of our healthy low-fat diet, and then on the sugar or corn syrup in the soft drinks, fruit juices and sports drinks that we have taken to consuming in quantity if for no other reason than that they are fat free and so appear intrinsically healthy. While the low-fat-is-good-health dogma represents reality as we have come to know it, and the government has spent hundreds of millions of dollars in research trying to prove its worth, the low-carbohydrate message has been relegated to the realm of unscientific fantasy.

Over the past five years, however, there has been a subtle shift in the scientific consensus. It used to be that even considering the possibility of the alternative hypothesis, let alone researching it, was tantamount to quackery by association. Now a small but growing minority of establishment researchers have come to take seriously what the low-carb-diet doctors have been saying all along. Walter Willett, chairman of the department of nutrition at the Harvard School of Public Health, may be the most visible proponent of testing this heretic hypothesis. Willett is the de facto spokesman of the longest-running, most comprehensive diet and health studies ever performed, which have already cost upward of $100 million and include data on nearly 300,000 individuals. Those data, says Willett, clearly contradict the low-fat-is-good-health message ''and the idea that all fat is bad for you; the exclusive focus on adverse effects of fat may have contributed to the obesity epidemic.''

These researchers point out that there are plenty of reasons to suggest that the low-fat-is-good-health hypothesis has now effectively failed the test of time. In particular, that we are in the midst of an obesity epidemic that started around the early 1980's, and that this was coincident with the rise of the low-fat dogma. (Type 2 diabetes, the most common form of the disease, also rose significantly through this period.) They say that low-fat weight-loss diets have proved in clinical trials and real life to be dismal failures, and that on top of it all, the percentage of fat in the American diet has been decreasing for two decades. Our cholesterol levels have been declining, and we have been smoking less, and yet the incidence of heart disease has not declined as would be expected. ''That is very disconcerting,'' Willett says. ''It suggests that something else bad is happening.''

The science behind the alternative hypothesis can be called Endocrinology 101, which is how it's referred to by David Ludwig, a researcher at Harvard Medical School who runs the pediatric obesity clinic at Children's Hospital Boston, and who prescribes his own version of a carbohydrate-restricted diet to his patients. Endocrinology 101 requires an understanding of how carbohydrates affect insulin and blood sugar and in turn fat metabolism and appetite. This is basic endocrinology, Ludwig says, which is the study of hormones, and it is still considered radical because the low-fat dietary wisdom emerged in the 1960's from researchers almost exclusively concerned with the effect of fat on cholesterol and heart disease. At the time, Endocrinology 101 was still underdeveloped, and so it was ignored. Now that this science is becoming clear, it has to fight a quarter century of anti-fat prejudice.

The alternative hypothesis also comes with an implication that is worth considering for a moment, because it's a whopper, and it may indeed be an obstacle to its acceptance. If the alternative hypothesis is right -- still a big ''if'' -- then it strongly suggests that the ongoing epidemic of obesity in America and elsewhere is not, as we are constantly told, due simply to a collective lack of will power and a failure to exercise. Rather it occurred, as Atkins has been saying (along with Barry Sears, author of ''The Zone''), because the public health authorities told us unwittingly, but with the best of intentions, to eat precisely those foods that would make us fat, and we did. We ate more fat-free carbohydrates, which, in turn, made us hungrier and then heavier. Put simply, if the alternative hypothesis is right, then a low-fat diet is not by definition a healthy diet. In practice, such a diet cannot help being high in carbohydrates, and that can lead to obesity, and perhaps even heart disease. ''For a large percentage of the population, perhaps 30 to 40 percent, low-fat diets are counterproductive,'' says Eleftheria Maratos-Flier, director of obesity research at Harvard's prestigious Joslin Diabetes Center. ''They have the paradoxical effect of making people gain weight.''

Scientists are still arguing about fat, despite a century of research, because the regulation of appetite and weight in the human body happens to be almost inconceivably complex, and the experimental tools we have to study it are still remarkably inadequate. This combination leaves researchers in an awkward position. To study the entire physiological system involves feeding real food to real human subjects for months or years on end, which is prohibitively expensive, ethically questionable (if you're trying to measure the effects of foods that might cause heart disease) and virtually impossible to do in any kind of rigorously controlled scientific manner. But if researchers seek to study something less costly and more controllable, they end up studying experimental situations so oversimplified that their results may have nothing to do with reality. This then leads to a research literature so vast that it's possible to find at least some published research to support virtually any theory. The result is a balkanized community -- ''splintered, very opinionated and in many instances, intransigent,'' says Kurt Isselbacher, a former chairman of the Food and Nutrition Board of the National Academy of Science -- in which researchers seem easily convinced that their preconceived notions are correct and thoroughly uninterested in testing any other hypotheses but their own.

What's more, the number of misconceptions propagated about the most basic research can be staggering. Researchers will be suitably scientific describing the limitations of their own experiments, and then will cite something as gospel truth because they read it in a magazine. The classic example is the statement heard repeatedly that 95 percent of all dieters never lose weight, and 95 percent of those who do will not keep it off. This will be correctly attributed to the University of Pennsylvania psychiatrist Albert Stunkard, but it will go unmentioned that this statement is based on 100 patients who passed through Stunkard's obesity clinic during the Eisenhower administration.

With these caveats, one of the few reasonably reliable facts about the obesity epidemic is that it started around the early 1980's. According to Katherine Flegal, an epidemiologist at the National Center for Health Statistics, the percentage of obese Americans stayed relatively constant through the 1960's and 1970's at 13 percent to 14 percent and then shot up by 8 percentage points in the 1980's. By the end of that decade, nearly one in four Americans was obese. That steep rise, which is consistent through all segments of American society and which continued unabated through the 1990's, is the singular feature of the epidemic. Any theory that tries to explain obesity in America has to account for that. Meanwhile, overweight children nearly tripled in number. And for the first time, physicians began diagnosing Type 2 diabetes in adolescents. Type 2 diabetes often accompanies obesity. It used to be called adult-onset diabetes and now, for the obvious reason, is not.

So how did this happen? The orthodox and ubiquitous explanation is that we live in what Kelly Brownell, a Yale psychologist, has called a ''toxic food environment'' of cheap fatty food, large portions, pervasive food advertising and sedentary lives. By this theory, we are at the Pavlovian mercy of the food industry, which spends nearly $10 billion a year advertising unwholesome junk food and fast food. And because these foods, especially fast food, are so filled with fat, they are both irresistible and uniquely fattening. On top of this, so the theory goes, our modern society has successfully eliminated physical activity from our daily lives. We no longer exercise or walk up stairs, nor do our children bike to school or play outside, because they would prefer to play video games and watch television. And because some of us are obviously predisposed to gain weight while others are not, this explanation also has a genetic component -- the thrifty gene. It suggests that storing extra calories as fat was an evolutionary advantage to our Paleolithic ancestors, who had to survive frequent famine. We then inherited these ''thrifty'' genes, despite their liability in today's toxic environment.

This theory makes perfect sense and plays to our puritanical prejudice that fat, fast food and television are innately damaging to our humanity. But there are two catches. First, to buy this logic is to accept that the copious negative reinforcement that accompanies obesity -- both socially and physically -- is easily overcome by the constant bombardment of food advertising and the lure of a supersize bargain meal. And second, as Flegal points out, little data exist to support any of this. Certainly none of it explains what changed so significantly to start the epidemic. Fast-food consumption, for example, continued to grow steadily through the 70's and 80's, but it did not take a sudden leap, as obesity did.

As far as exercise and physical activity go, there are no reliable data before the mid-80's, according to William Dietz, who runs the division of nutrition and physical activity at the Centers for Disease Control; the 1990's data show obesity rates continuing to climb, while exercise activity remained unchanged. This suggests the two have little in common. Dietz also acknowledged that a culture of physical exercise began in the United States in the 70's -- the ''leisure exercise mania,'' as Robert Levy, director of the National Heart, Lung and Blood Institute, described it in 1981 -- and has continued through the present day.

As for the thrifty gene, it provides the kind of evolutionary rationale for human behavior that scientists find comforting but that simply cannot be tested. In other words, if we were living through an anorexia epidemic, the experts would be discussing the equally untestable ''spendthrift gene'' theory, touting evolutionary advantages of losing weight effortlessly. An overweight homo erectus, they'd say, would have been easy prey for predators.

It is also undeniable, note students of Endocrinology 101, that mankind never evolved to eat a diet high in starches or sugars. ''Grain products and concentrated sugars were essentially absent from human nutrition until the invention of agriculture,'' Ludwig says, ''which was only 10,000 years ago.'' This is discussed frequently in the anthropology texts but is mostly absent from the obesity literature, with the prominent exception of the low-carbohydrate-diet books.

What's forgotten in the current controversy is that the low-fat dogma itself is only about 25 years old. Until the late 70's, the accepted wisdom was that fat and protein protected against overeating by making you sated, and that carbohydrates made you fat. In ''The Physiology of Taste,'' for instance, an 1825 discourse considered among the most famous books ever written about food, the French gastronome Jean Anthelme Brillat-Savarin says that he could easily identify the causes of obesity after 30 years of listening to one ''stout party'' after another proclaiming the joys of bread, rice and (from a ''particularly stout party'') potatoes. Brillat-Savarin described the roots of obesity as a natural predisposition conjuncted with the ''floury and feculent substances which man makes the prime ingredients of his daily nourishment.'' He added that the effects of this fecula -- i.e., ''potatoes, grain or any kind of flour'' -- were seen sooner when sugar was added to the diet.

This is what my mother taught me 40 years ago, backed up by the vague observation that Italians tended toward corpulence because they ate so much pasta. This observation was actually documented by Ancel Keys, a University of Minnesota physician who noted that fats ''have good staying power,'' by which he meant they are slow to be digested and so lead to satiation, and that Italians were among the heaviest populations he had studied. According to Keys, the Neapolitans, for instance, ate only a little lean meat once or twice a week, but ate bread and pasta every day for lunch and dinner. ''There was no evidence of nutritional deficiency,'' he wrote, ''but the working-class women were fat.''

By the 70's, you could still find articles in the journals describing high rates of obesity in Africa and the Caribbean where diets contained almost exclusively carbohydrates. The common thinking, wrote a former director of the Nutrition Division of the United Nations, was that the ideal diet, one that prevented obesity, snacking and excessive sugar consumption, was a diet ''with plenty of eggs, beef, mutton, chicken, butter and well-cooked vegetables.'' This was the identical prescription Brillat-Savarin put forth in 1825.

It was Ancel Keys, paradoxically, who introduced the low-fat-is-good-health dogma in the 50's with his theory that dietary fat raises cholesterol levels and gives you heart disease. Over the next two decades, however, the scientific evidence supporting this theory remained stubbornly ambiguous. The case was eventually settled not by new science but by politics. It began in January 1977, when a Senate committee led by George McGovern published its ''Dietary Goals for the United States,'' advising that Americans significantly curb their fat intake to abate an epidemic of ''killer diseases'' supposedly sweeping the country. It peaked in late 1984, when the National Institutes of Health officially recommended that all Americans over the age of 2 eat less fat. By that time, fat had become ''this greasy killer'' in the memorable words of the Center for Science in the Public Interest, and the model American breakfast of eggs and bacon was well on its way to becoming a bowl of Special K with low-fat milk, a glass of orange juice and toast, hold the butter -- a dubious feast of refined carbohydrates.

In the intervening years, the N.I.H. spent several hundred million dollars trying to demonstrate a connection between eating fat and getting heart disease and, despite what we might think, it failed. Five major studies revealed no such link. A sixth, however, costing well over $100 million alone, concluded that reducing cholesterol by drug therapy could prevent heart disease. The N.I.H. administrators then made a leap of faith. Basil Rifkind, who oversaw the relevant trials for the N.I.H., described their logic this way: they had failed to demonstrate at great expense that eating less fat had any health benefits. But if a cholesterol-lowering drug could prevent heart attacks, then a low-fat, cholesterol-lowering diet should do the same. ''It's an imperfect world,'' Rifkind told me. ''The data that would be definitive is ungettable, so you do your best with what is available.''

Some of the best scientists disagreed with this low-fat logic, suggesting that good science was incompatible with such leaps of faith, but they were effectively ignored. Pete Ahrens, whose Rockefeller University laboratory had done the seminal research on cholesterol metabolism, testified to McGovern's committee that everyone responds differently to low-fat diets. It was not a scientific matter who might benefit and who might be harmed, he said, but ''a betting matter.'' Phil Handler, then president of the National Academy of Sciences, testified in Congress to the same effect in 1980. ''What right,'' Handler asked, ''has the federal government to propose that the American people conduct a vast nutritional experiment, with themselves as subjects, on the strength of so very little evidence that it will do them any good?''

Nonetheless, once the N.I.H. signed off on the low-fat doctrine, societal forces took over. The food industry quickly began producing thousands of reduced-fat food products to meet the new recommendations. Fat was removed from foods like cookies, chips and yogurt. The problem was, it had to be replaced with something as tasty and pleasurable to the palate, which meant some form of sugar, often high-fructose corn syrup. Meanwhile, an entire industry emerged to create fat substitutes, of which Procter & Gamble's olestra was first. And because these reduced-fat meats, cheeses, snacks and cookies had to compete with a few hundred thousand other food products marketed in America, the industry dedicated considerable advertising effort to reinforcing the less-fat-is-good-health message. Helping the cause was what Walter Willett calls the ''huge forces'' of dietitians, health organizations, consumer groups, health reporters and even cookbook writers, all well-intended missionaries of healthful eating.

Few experts now deny that the low-fat message is radically oversimplified. If nothing else, it effectively ignores the fact that unsaturated fats, like olive oil, are relatively good for you: they tend to elevate your good cholesterol, high-density lipoprotein (H.D.L.), and lower your bad cholesterol, low-density lipoprotein (L.D.L.), at least in comparison to the effect of carbohydrates. While higher L.D.L. raises your heart-disease risk, higher H.D.L. reduces it.

What this means is that even saturated fats -- a k a, the bad fats -- are not nearly as deleterious as you would think. True, they will elevate your bad cholesterol, but they will also elevate your good cholesterol. In other words, it's a virtual wash. As Willett explained to me, you will gain little to no health benefit by giving up milk, butter and cheese and eating bagels instead.

But it gets even weirder than that. Foods considered more or less deadly under the low-fat dogma turn out to be comparatively benign if you actually look at their fat content. More than two-thirds of the fat in a porterhouse steak, for instance, will definitively improve your cholesterol profile (at least in comparison with the baked potato next to it); it's true that the remainder will raise your L.D.L., the bad stuff, but it will also boost your H.D.L. The same is true for lard. If you work out the numbers, you come to the surreal conclusion that you can eat lard straight from the can and conceivably reduce your risk of heart disease.

The crucial example of how the low-fat recommendations were oversimplified is shown by the impact -- potentially lethal, in fact -- of low-fat diets on triglycerides, which are the component molecules of fat. By the late 60's, researchers had shown that high triglyceride levels were at least as common in heart-disease patients as high L.D.L. cholesterol, and that eating a low-fat, high-carbohydrate diet would, for many people, raise their triglyceride levels, lower their H.D.L. levels and accentuate what Gerry Reaven, an endocrinologist at Stanford University, called Syndrome X. This is a cluster of conditions that can lead to heart disease and Type 2 diabetes.

It took Reaven a decade to convince his peers that Syndrome X was a legitimate health concern, in part because to accept its reality is to accept that low-fat diets will increase the risk of heart disease in a third of the population. ''Sometimes we wish it would go away because nobody knows how to deal with it,'' said Robert Silverman, an N.I.H. researcher, at a 1987 N.I.H. conference. ''High protein levels can be bad for the kidneys. High fat is bad for your heart. Now Reaven is saying not to eat high carbohydrates. We have to eat something.''

Surely, everyone involved in drafting the various dietary guidelines wanted Americans simply to eat less junk food, however you define it, and eat more the way they do in Berkeley, Calif. But we didn't go along. Instead we ate more starches and refined carbohydrates, because calorie for calorie, these are the cheapest nutrients for the food industry to produce, and they can be sold at the highest profit. It's also what we like to eat. Rare is the person under the age of 50 who doesn't prefer a cookie or heavily sweetened yogurt to a head of broccoli.

''All reformers would do well to be conscious of the law of unintended consequences,'' says Alan Stone, who was staff director for McGovern's Senate committee. Stone told me he had an inkling about how the food industry would respond to the new dietary goals back when the hearings were first held. An economist pulled him aside, he said, and gave him a lesson on market disincentives to healthy eating: ''He said if you create a new market with a brand-new manufactured food, give it a brand-new fancy name, put a big advertising budget behind it, you can have a market all to yourself and force your competitors to catch up. You can't do that with fruits and vegetables. It's harder to differentiate an apple from an apple.''

Nutrition researchers also played a role by trying to feed science into the idea that carbohydrates are the ideal nutrient. It had been known, for almost a century, and considered mostly irrelevant to the etiology of obesity, that fat has nine calories per gram compared with four for carbohydrates and protein. Now it became the fail-safe position of the low-fat recommendations: reduce the densest source of calories in the diet and you will lose weight. Then in 1982, J.P. Flatt, a University of Massachusetts biochemist, published his research demonstrating that, in any normal diet, it is extremely rare for the human body to convert carbohydrates into body fat. This was then misinterpreted by the media and quite a few scientists to mean that eating carbohydrates, even to excess, could not make you fat -- which is not the case, Flatt says. But the misinterpretation developed a vigorous life of its own because it resonated with the notion that fat makes you fat and carbohydrates are harmless.

As a result, the major trends in American diets since the late 70's, according to the U.S.D.A. agricultural economist Judith Putnam, have been a decrease in the percentage of fat calories and a ''greatly increased consumption of carbohydrates.'' To be precise, annual grain consumption has increased almost 60 pounds per person, and caloric sweeteners (primarily high-fructose corn syrup) by 30 pounds. At the same time, we suddenly began consuming more total calories: now up to 400 more each day since the government started recommending low-fat diets.

If these trends are correct, then the obesity epidemic can certainly be explained by Americans' eating more calories than ever -- excess calories, after all, are what causes us to gain weight -- and, specifically, more carbohydrates. The question is why?

The answer provided by Endocrinology 101 is that we are simply hungrier than we were in the 70's, and the reason is physiological more than psychological. In this case, the salient factor -- ignored in the pursuit of fat and its effect on cholesterol -- is how carbohydrates affect blood sugar and insulin. In fact, these were obvious culprits all along, which is why Atkins and the low-carb-diet doctors pounced on them early.

The primary role of insulin is to regulate blood-sugar levels. After you eat carbohydrates, they will be broken down into their component sugar molecules and transported into the bloodstream. Your pancreas then secretes insulin, which shunts the blood sugar into muscles and the liver as fuel for the next few hours. This is why carbohydrates have a significant impact on insulin and fat does not. And because juvenile diabetes is caused by a lack of insulin, physicians believed since the 20's that the only evil with insulin is not having enough.

But insulin also regulates fat metabolism. We cannot store body fat without it. Think of insulin as a switch. When it's on, in the few hours after eating, you burn carbohydrates for energy and store excess calories as fat. When it's off, after the insulin has been depleted, you burn fat as fuel. So when insulin levels are low, you will burn your own fat, but not when they're high.

This is where it gets unavoidably complicated. The fatter you are, the more insulin your pancreas will pump out per meal, and the more likely you'll develop what's called ''insulin resistance,'' which is the underlying cause of Syndrome X. In effect, your cells become insensitive to the action of insulin, and so you need ever greater amounts to keep your blood sugar in check. So as you gain weight, insulin makes it easier to store fat and harder to lose it. But the insulin resistance in turn may make it harder to store fat -- your weight is being kept in check, as it should be. But now the insulin resistance might prompt your pancreas to produce even more insulin, potentially starting a vicious cycle. Which comes first -- the obesity, the elevated insulin, known as hyperinsulinemia, or the insulin resistance -- is a chicken-and-egg problem that hasn't been resolved. One endocrinologist described this to me as ''the Nobel-prize winning question.''

Insulin also profoundly affects hunger, although to what end is another point of controversy. On the one hand, insulin can indirectly cause hunger by lowering your blood sugar, but how low does blood sugar have to drop before hunger kicks in? That's unresolved. Meanwhile, insulin works in the brain to suppress hunger. The theory, as explained to me by Michael Schwartz, an endocrinologist at the University of Washington, is that insulin's ability to inhibit appetite would normally counteract its propensity to generate body fat. In other words, as you gained weight, your body would generate more insulin after every meal, and that in turn would suppress your appetite; you'd eat less and lose the weight.

Schwartz, however, can imagine a simple mechanism that would throw this ''homeostatic'' system off balance: if your brain were to lose its sensitivity to insulin, just as your fat and muscles do when they are flooded with it. Now the higher insulin production that comes with getting fatter would no longer compensate by suppressing your appetite, because your brain would no longer register the rise in insulin. The end result would be a physiologic state in which obesity is almost preordained, and one in which the carbohydrate-insulin connection could play a major role. Schwartz says he believes this could indeed be happening, but research hasn't progressed far enough to prove it. ''It is just a hypothesis,'' he says. ''It still needs to be sorted out.''

David Ludwig, the Harvard endocrinologist, says that it's the direct effect of insulin on blood sugar that does the trick. He notes that when diabetics get too much insulin, their blood sugar drops and they get ravenously hungry. They gain weight because they eat more, and the insulin promotes fat deposition. The same happens with lab animals. This, he says, is effectively what happens when we eat carbohydrates -- in particular sugar and starches like potatoes and rice, or anything made from flour, like a slice of white bread. These are known in the jargon as high-glycemic-index carbohydrates, which means they are absorbed quickly into the blood. As a result, they cause a spike of blood sugar and a surge of insulin within minutes. The resulting rush of insulin stores the blood sugar away and a few hours later, your blood sugar is lower than it was before you ate. As Ludwig explains, your body effectively thinks it has run out of fuel, but the insulin is still high enough to prevent you from burning your own fat. The result is hunger and a craving for more carbohydrates. It's another vicious circle, and another situation ripe for obesity.

The glycemic-index concept and the idea that starches can be absorbed into the blood even faster than sugar emerged in the late 70's, but again had no influence on public health recommendations, because of the attendant controversies. To wit: if you bought the glycemic-index concept, then you had to accept that the starches we were supposed to be eating 6 to 11 times a day were, once swallowed, physiologically indistinguishable from sugars. This made them seem considerably less than wholesome. Rather than accept this possibility, the policy makers simply allowed sugar and corn syrup to elude the vilification that befell dietary fat. After all, they are fat-free.

Sugar and corn syrup from soft drinks, juices and the copious teas and sports drinks now supply more than 10 percent of our total calories; the 80's saw the introduction of Big Gulps and 32-ounce cups of Coca-Cola, blasted through with sugar, but 100 percent fat free. When it comes to insulin and blood sugar, these soft drinks and fruit juices -- what the scientists call ''wet carbohydrates'' -- might indeed be worst of all. (Diet soda accounts for less than a quarter of the soda market.)

The gist of the glycemic-index idea is that the longer it takes the carbohydrates to be digested, the lesser the impact on blood sugar and insulin and the healthier the food. Those foods with the highest rating on the glycemic index are some simple sugars, starches and anything made from flour. Green vegetables, beans and whole grains cause a much slower rise in blood sugar because they have fiber, a nondigestible carbohydrate, which slows down digestion and lowers the glycemic index. Protein and fat serve the same purpose, which implies that eating fat can be beneficial, a notion that is still unacceptable. And the glycemic-index concept implies that a primary cause of Syndrome X, heart disease, Type 2 diabetes and obesity is the long-term damage caused by the repeated surges of insulin that come from eating starches and refined carbohydrates. This suggests a kind of unified field theory for these chronic diseases, but not one that coexists easily with the low-fat doctrine.

At Ludwig's pediatric obesity clinic, he has been prescribing low-glycemic-index diets to children and adolescents for five years now. He does not recommend the Atkins diet because he says he believes such a very low carbohydrate approach is unnecessarily restrictive; instead, he tells his patients to effectively replace refined carbohydrates and starches with vegetables, legumes and fruit. This makes a low-glycemic-index diet consistent with dietary common sense, albeit in a higher-fat kind of way. His clinic now has a nine-month waiting list. Only recently has Ludwig managed to convince the N.I.H. that such diets are worthy of study. His first three grant proposals were summarily rejected, which may explain why much of the relevant research has been done in Canada and in Australia. In April, however, Ludwig received $1.2 million from the N.I.H. to test his low-glycemic-index diet against a traditional low-fat-low-calorie regime. That might help resolve some of the controversy over the role of insulin in obesity, although the redoubtable Robert Atkins might get there first.

The 71-year-old Atkins, a graduate of Cornell medical school, says he first tried a very low carbohydrate diet in 1963 after reading about one in the Journal of the American Medical Association. He lost weight effortlessly, had his epiphany and turned a fledgling Manhattan cardiology practice into a thriving obesity clinic. He then alienated the entire medical community by telling his readers to eat as much fat and protein as they wanted, as long as they ate little to no carbohydrates. They would lose weight, he said, because they would keep their insulin down; they wouldn't be hungry; and they would have less resistance to burning their own fat. Atkins also noted that starches and sugar were harmful in any event because they raised triglyceride levels and that this was a greater risk factor for heart disease than cholesterol.

Atkins's diet is both the ultimate manifestation of the alternative hypothesis as well as the battleground on which the fat-versus-carbohydrates controversy is likely to be fought scientifically over the next few years. After insisting Atkins was a quack for three decades, obesity experts are now finding it difficult to ignore the copious anecdotal evidence that his diet does just what he has claimed. Take Albert Stunkard, for instance. Stunkard has been trying to treat obesity for half a century, but he told me he had his epiphany about Atkins and maybe about obesity as well just recently when he discovered that the chief of radiology in his hospital had lost 60 pounds on Atkins's diet. ''Well, apparently all the young guys in the hospital are doing it,'' he said. ''So we decided to do a study.'' When I asked Stunkard if he or any of his colleagues considered testing Atkins's diet 30 years ago, he said they hadn't because they thought Atkins was ''a jerk'' who was just out to make money: this ''turned people off, and so nobody took him seriously enough to do what we're finally doing.''

In fact, when the American Medical Association released its scathing critique of Atkins's diet in March 1973, it acknowledged that the diet probably worked, but expressed little interest in why. Through the 60's, this had been a subject of considerable research, with the conclusion that Atkins-like diets were low-calorie diets in disguise; that when you cut out pasta, bread and potatoes, you'll have a hard time eating enough meat, vegetables and cheese to replace the calories.

That, however, raised the question of why such a low-calorie regimen would also suppress hunger, which Atkins insisted was the signature characteristic of the diet. One possibility was Endocrinology 101: that fat and protein make you sated and, lacking carbohydrates and the ensuing swings of blood sugar and insulin, you stay sated. The other possibility arose from the fact that Atkins's diet is ''ketogenic.'' This means that insulin falls so low that you enter a state called ketosis, which is what happens during fasting and starvation. Your muscles and tissues burn body fat for energy, as does your brain in the form of fat molecules produced by the liver called ketones. Atkins saw ketosis as the obvious way to kick-start weight loss. He also liked to say that ketosis was so energizing that it was better than sex, which set him up for some ridicule. An inevitable criticism of Atkins's diet has been that ketosis is dangerous and to be avoided at all costs.

When I interviewed ketosis experts, however, they universally sided with Atkins, and suggested that maybe the medical community and the media confuse ketosis with ketoacidosis, a variant of ketosis that occurs in untreated diabetics and can be fatal. ''Doctors are scared of ketosis,'' says Richard Veech, an N.I.H. researcher who studied medicine at Harvard and then got his doctorate at Oxford University with the Nobel Laureate Hans Krebs. ''They're always worried about diabetic ketoacidosis. But ketosis is a normal physiologic state. I would argue it is the normal state of man. It's not normal to have McDonald's and a delicatessen around every corner. It's normal to starve.''

Simply put, ketosis is evolution's answer to the thrifty gene. We may have evolved to efficiently store fat for times of famine, says Veech, but we also evolved ketosis to efficiently live off that fat when necessary. Rather than being poison, which is how the press often refers to ketones, they make the body run more efficiently and provide a backup fuel source for the brain. Veech calls ketones ''magic'' and has shown that both the heart and brain run 25 percent more efficiently on ketones than on blood sugar.

The bottom line is that for the better part of 30 years Atkins insisted his diet worked and was safe, Americans apparently tried it by the tens of millions, while nutritionists, physicians, public- health authorities and anyone concerned with heart disease insisted it could kill them, and expressed little or no desire to find out who was right. During that period, only two groups of U.S. researchers tested the diet, or at least published their results. In the early 70's, J.P. Flatt and Harvard's George Blackburn pioneered the ''protein-sparing modified fast'' to treat postsurgical patients, and they tested it on obese volunteers. Blackburn, who later became president of the American Society of Clinical Nutrition, describes his regime as ''an Atkins diet without excess fat'' and says he had to give it a fancy name or nobody would take him seriously. The diet was ''lean meat, fish and fowl'' supplemented by vitamins and minerals. ''People loved it,'' Blackburn recalls. ''Great weight loss. We couldn't run them off with a baseball bat.'' Blackburn successfully treated hundreds of obese patients over the next decade and published a series of papers that were ignored. When obese New Englanders turned to appetite-control drugs in the mid-80's, he says, he let it drop. He then applied to the N.I.H. for a grant to do a clinical trial of popular diets but was rejected.

The second trial, published in September 1980, was done at the George Washington University Medical Center. Two dozen obese volunteers agreed to follow Atkins's diet for eight weeks and lost an average of 17 pounds each, with no apparent ill effects, although their L.D.L. cholesterol did go up. The researchers, led by John LaRosa, now president of the State University of New York Downstate Medical Center in Brooklyn, concluded that the 17-pound weight loss in eight weeks would likely have happened with any diet under ''the novelty of trying something under experimental conditions'' and never pursued it further.

Now researchers have finally decided that Atkins's diet and other low-carb diets have to be tested, and are doing so against traditional low-calorie-low-fat diets as recommended by the American Heart Association. To explain their motivation, they inevitably tell one of two stories: some, like Stunkard, told me that someone they knew -- a patient, a friend, a fellow physician -- lost considerable weight on Atkins's diet and, despite all their preconceptions to the contrary, kept it off. Others say they were frustrated with their inability to help their obese patients, looked into the low-carb diets and decided that Endocrinology 101 was compelling. ''As a trained physician, I was trained to mock anything like the Atkins diet,'' says Linda Stern, an internist at the Philadelphia Veterans Administration Hospital, ''but I put myself on the diet. I did great. And I thought maybe this is something I can offer my patients.''

None of these studies have been financed by the N.I.H., and none have yet been published. But the results have been reported at conferences -- by researchers at Schneider Children's Hospital on Long Island, Duke University and the University of Cincinnati, and by Stern's group at the Philadelphia V.A. Hospital. And then there's the study Stunkard had mentioned, led by Gary Foster at the University of Pennsylvania, Sam Klein, director of the Center for Human Nutrition at Washington University in St. Louis, and Jim Hill, who runs the University of Colorado Center for Human Nutrition in Denver. The results of all five of these studies are remarkably consistent. Subjects on some form of the Atkins diet -- whether overweight adolescents on the diet for 12 weeks as at Schneider, or obese adults averaging 295 pounds on the diet for six months, as at the Philadelphia V.A. -- lost twice the weight as the subjects on the low-fat, low-calorie diets.

In all five studies, cholesterol levels improved similarly with both diets, but triglyceride levels were considerably lower with the Atkins diet. Though researchers are hesitant to agree with this, it does suggest that heart-disease risk could actually be reduced when fat is added back into the diet and starches and refined carbohydrates are removed. ''I think when this stuff gets to be recognized,'' Stunkard says, ''it's going to really shake up a lot of thinking about obesity and metabolism.''

All of this could be settled sooner rather than later, and with it, perhaps, we might have some long-awaited answers as to why we grow fat and whether it is indeed preordained by societal forces or by our choice of foods. For the first time, the N.I.H. is now actually financing comparative studies of popular diets. Foster, Klein and Hill, for instance, have now received more than $2.5 million from N.I.H. to do a five-year trial of the Atkins diet with 360 obese individuals. At Harvard, Willett, Blackburn and Penelope Greene have money, albeit from Atkins's nonprofit foundation, to do a comparative trial as well.

Should these clinical trials also find for Atkins and his high-fat, low-carbohydrate diet, then the public-health authorities may indeed have a problem on their hands. Once they took their leap of faith and settled on the low-fat dietary dogma 25 years ago, they left little room for contradictory evidence or a change of opinion, should such a change be necessary to keep up with the science. In this light Sam Klein's experience is noteworthy. Klein is president-elect of the North American Association for the Study of Obesity, which suggests that he is a highly respected member of his community. And yet, he described his recent experience discussing the Atkins diet at medical conferences as a learning experience. ''I have been impressed,'' he said, ''with the anger of academicians in the audience. Their response is 'How dare you even present data on the Atkins diet!' ''

This hostility stems primarily from their anxiety that Americans, given a glimmer of hope about their weight, will rush off en masse to try a diet that simply seems intuitively dangerous and on which there is still no long-term data on whether it works and whether it is safe. It's a justifiable fear. In the course of my research, I have spent my mornings at my local diner, staring down at a plate of scrambled eggs and sausage, convinced that somehow, some way, they must be working to clog my arteries and do me in.

After 20 years steeped in a low-fat paradigm, I find it hard to see the nutritional world any other way. I have learned that low-fat diets fail in clinical trials and in real life, and they certainly have failed in my life. I have read the papers suggesting that 20 years of low-fat recommendations have not managed to lower the incidence of heart disease in this country, and may have led instead to the steep increase in obesity and Type 2 diabetes. I have interviewed researchers whose computer models have calculated that cutting back on the saturated fats in my diet to the levels recommended by the American Heart Association would not add more than a few months to my life, if that. I have even lost considerable weight with relative ease by giving up carbohydrates on my test diet, and yet I can look down at my eggs and sausage and still imagine the imminent onset of heart disease and obesity, the latter assuredly to be caused by some bizarre rebound phenomena the likes of which science has not yet begun to describe. The fact that Atkins himself has had heart trouble recently does not ease my anxiety, despite his assurance that it is not diet-related.

This is the state of mind I imagine that mainstream nutritionists, researchers and physicians must inevitably take to the fat-versus-carbohydrate controversy. They may come around, but the evidence will have to be exceptionally compelling. Although this kind of conversion may be happening at the moment to John Farquhar, who is a professor of health research and policy at Stanford University and has worked in this field for more than 40 years. When I interviewed Farquhar in April, he explained why low-fat diets might lead to weight gain and low-carbohydrate diets might lead to weight loss, but he made me promise not to say he believed they did. He attributed the cause of the obesity epidemic to the ''force-feeding of a nation.'' Three weeks later, after reading an article on Endocrinology 101 by David Ludwig in the Journal of the American Medical Association, he sent me an e-mail message asking the not-entirely-rhetorical question, ''Can we get the low-fat proponents to apologize?''

Gary Taubes is a correspondent for the journal Science and author of ''Bad Science: The Short Life and Weird Times of Cold Fusion.''


TOPICS: Culture/Society; Front Page News
KEYWORDS: atkins; atkinsdiet; diet; dratkins; fat; lowcarbdiet; southbeachdiet
Navigation: use the links below to view more comments.
first previous 1-20 ... 301-320321-340341-360 ... 421-422 next last
To: Dana113
Did you notice that the topic at hand *IS* Atkins? If you aren't talking about Atkins then exactly WHICH low carb diet are you talking about?

When did the topic become specifically about Atkins?? The thread began with your assertion that one can lose more weight on a low-carb diet (you did not specify which one - see post 172)than on a high-carb diet even if the low-carb diet is higher in calories. You then posted two studies as "proof", but only one of the test diets is specifically identified as the "Atkins Diet"; the other is only called a "low-carbohydrate diet". In a subsequent post (#227), you presented two additional studies, but neither of the test diets is specified as the Atkins Diet; the Schneider's Children's Hospital diet is referred to as either a "controlled carbohydrate program" or a "high-protein, high-fat carbohydrate-restricted diet", and the other diet is most certainly not the Atkins Diet, but a 35% fat, "Mediterranean-style diet".

As to which low-carb diet I was referring to: very-low-carb diets in general. I don't get too caught up in the minutiae, as don't most scientifically-literate people.

321 posted on 07/07/2002 8:26:35 AM PDT by MArdee
[ Post Reply | Private Reply | To 252 | View Replies]

To: Arioch7
Apoligies, living in liberal land drives me insane.:D
322 posted on 07/07/2002 10:33:15 AM PDT by Arioch7
[ Post Reply | Private Reply | To 310 | View Replies]

To: Swordmaker
You may have a point there.

Not to be a wise guy but isn't Mr. Atkins sick? I had heard he had heart problems? I am being serious here.

323 posted on 07/07/2002 10:34:55 AM PDT by Arioch7
[ Post Reply | Private Reply | To 316 | View Replies]

To: bluefish; jennyp; Senator Pardek
I'll note thaat competitive bodybuilders almost always use the extreme low-carb diet in the last few months of contest preparation to cut up (lose fat). As bluefish noted, though, they aren't exactly representative....they are genetic freaks when it comes to building muscle, and are always on drugs to help anabolism (and decrease catabolism). Take it for what it is worth.

More interesting to me is the vehemence with which people cling to one view or another, both in this thread and the NY Times article. If it were an argument over creationism vs. evolution or some such, that would be understandable (worldviews are questioned). Dieting is not exactly trivial, but people cannot seem to be objective about it.
324 posted on 07/07/2002 10:53:18 AM PDT by NukeMan
[ Post Reply | Private Reply | To 317 | View Replies]

To: MArdee
As to which low-carb diet I was referring to: very-low-carb diets in general. I don't get too caught up in the minutiae, as don't most scientifically-literate people

MsArdee, apparently, "minutiae" such as WHAT constitutes a low carb diet may not be important to you, but you and I both know that it is important to real scientists who are sincerely seeking the truth. Obviously, that is a KEY issue if one is going to study low carb diets, lest they end up with egg on thier faces as you have here.

Low carb does not mean whatever subjective measurement you decide to slap on it. The fact is that Atkins has never claimed that one can lose weight on 37 grams of carbs, nor does he recommend a 1000 a day calorie diet [which does nothing but bring metabolism to a screeching halt after the initial weight loss and is probably mostly muscle loss anyway]. The strictest phase of his diet is 1900-2000 calories a day. You posted that study *TO ME* knowing that I was talking about Atkins. The problem is that your study is nothing CLOSE to Atkins and is not relevent to the discussion.

325 posted on 07/07/2002 11:12:25 AM PDT by Dana113
[ Post Reply | Private Reply | To 321 | View Replies]

To: Arioch7
Arioch, As usual, you do not know of what you speak and never back up your claims. I have supported every claim I have made. You are simply parroting popular propoganda that you "heard" [with no substantiation] that is easily dispelled with the original article that started this debate and the subsequent ones I have posted. [did you even read the article??]

you wrote: As far as Eskimos being tainted by our dietary choices, I just dont buy it.

Of course you don't buy it because you DON'T KNOW. You research nothing. You are only guessing and making it up as you go along. My claims are backed up with research - yours are not. The reason I believe in Atkins is because I have RESEARCHED IT and let the FACTS and the SCIENCE bring me to my conclusions - NOT the other way around. As is common with you anti-low carb people, you cannot back your claims up because you have NOT come to the conclusion honestly via FACTS, evidence from your own research. You simply take the lazy man's way out and parrot what you HAVE HEARD. You have come to a conclusion based on OTHER PEOPLE'S opinions and that is why you get caught with your pants down like this.

Let's look at the a study about native Alaskans:

Dietary Changes and Obesity Associated With Glucose Intolerance in Alaska Natives

Reference: Murphy, N.J., Schraer, C.D., Thiele, M.C., et al., "Dietary Changes and Obesity Associated With Glucose Intolerance in Alaska Natives," Journal of the American Dietetic Association, 95(6), 1995, pages 676-682.

Summary: Obesity was virtually nonexistent in Alaska in aboriginal times, when carbohydrate consumption comprised only 3 to 5 percent of the total diet. Between 1962 and 1972, incidence of obesity was significantly higher than it had been 25 years prior. By 1978, carbohydrates constituted 50 percent of total calories, with a majority of those carbohydrates being of low nutrient-density. Researchers in this study sought to investigate associations between changes in food intake and its relation to body weight and glucose intolerance in Alaskan natives. In this study, nutrition screenings of 1,124 participants (20 years of age and older) were completed in 15 Alaskan villages during 1987 and 1988. Subjects were classified into those who ate native ethnic foods and those who ate Western foods. Body Mass Index was used to define weight status. Researchers noted that Athabascan Indians had twice the rate of non-insulin dependent diabetes (NIDDM) as did Yup'ik Eskimos. This appeared to be related to eating greater amounts of non-indigenous foods (white bread, soda, Tang/Hi-C, potatoes, rice cereal, shortening and deep fried foods), while at the same time eating fewer native carbohydrates (greens, berries, Eskimo potato) and fats (salmon/fish and seal oil). Subjects who were glucose intolerant weighed more than other subjects and consumed less seal oil and more non-ethnic, Western protein. Individuals underage 30 consumed significantly less indigenous protein and fat and more low-nutrient-density carbohydrate than individuals 60 and older. The authors noted that increased consumption of sweetened soda, increased incidence of overweight, midsection obesity and loss of fitness in Arctic children parallel non-Arctic children as do the escalating rates of NIDDM in children. The authors concluded that lower intake of seal and salmon fat was the most important factor in the increased rates of obesity and NIDDM in Alaska.

326 posted on 07/07/2002 11:29:28 AM PDT by Dana113
[ Post Reply | Private Reply | To 310 | View Replies]

To: Arioch7
Dr. Atkins has an infected heart muscle. The condition cannot be caused by diet anymore than eating cold cereal could give you a cold. By the way, his cardiologist said that his arteries looked wonderful.
327 posted on 07/07/2002 12:41:55 PM PDT by Nov3
[ Post Reply | Private Reply | To 323 | View Replies]

To: Dana113; All
Ok. I did not say that I knew for a fact that the Eskimos were not affected by our dietary choices, I said I did not buy it.

What else in my article was wrong?

I will et you know the reason I am not posting scientific studies. The thing is that almost the entire scientific community agrees with me. If I quote them, you will say that I am "Parroting," the status quo which IMHO is a conveniant way to say nothing I post will change your mind.

Lets see, how about this quote, it has Harvard AND the ADA...

"Atkins explains it this way: when carbohydrates are severely restricted, the body is missing its main energy source—glucose that is made from carbs—and so it burns its own fat to use as energy and you lose weight.

The American Dietetic Association’s explanation is this: A low-carb diet forces the liver to produce that missing glucose, in the process sacrificing muscle and other lean tissue.

Since a low-carb diet depletes muscle tissue and water quickly, dieters see instant results. But when a normal diet is resumed, the muscle tissue is rebuilt, water is restored and weight quickly returns.

“It’s calories and portion sizes that have made us fat, not complex carbohydrates,” says Dr. George Blackburn, a leading obesity expert at Harvard University.

“Every diet that lowers your overall caloric intake is going to make you lose weight,” adds Dr. John Foreyt, director of Nutrition Research at Baylor College. “You could have people stand on their heads and they’d lose weight.”

Since 95% of the bloody world agrees with me, I could post a billion others. When I posted anything such as carbs being the brains main source of energy, you said I was falling for thier propoganda.

About my misunderstanding of the condition known as Ketosis which I apoligized for, I also have medical essays which I will post so as to not make this too long.

The reason I am not doing any RESEARCH is because I have done it before and since I have been training for over fifteen years I think I have a handle on it but if it is research you want, I will give it to you. Of course, it will be flawed "Anti-Atkins;" research by your estimation.

328 posted on 07/07/2002 3:05:49 PM PDT by Arioch7
[ Post Reply | Private Reply | To 326 | View Replies]

To: Arioch7; All
About my use of the word Ketosis... from an essay by Dr. McBride from the idealdiet.com

"As a long term maintenance plan, there is a concern that ongoing ketosis may present some hazards, and this is the major criticism of this diet plan. In some cases the definition of ketosis is at issue - some persons mistake the ketosis of a low carbohydrate diet with the ketoacidosis of a diabetic who does not obtain adequate insulin, or the normal ketone levels caused by fat metabolism with the ketosis of excess fatty acid breakdown.

As for the safety of long-term ketosis with adequate calorie intake, enough scientific studies have not been performed to provide an answer on this, although no adverse effects have been noted to date, especially on liver and kidney function. One issue which has not been studied adequately is that of potential calcium and bone loss from acidification of the bloodstream by ketones over a prolonged period of time."

329 posted on 07/07/2002 3:09:19 PM PDT by Arioch7
[ Post Reply | Private Reply | To 328 | View Replies]

To: Arioch7
Arioch7 states "Japan is the country that has the most longevity, the most healthy people in the world. That is FACT."

Where is this a proven fact, in FACT the Japanese have much higher rates of stomach cancer and strokes. I would say it is highly subjective to state they are the healthiest.

The alleged health of the Japanese diet may be due to other factors like their higher intake of Omega 3 fatty acids (they eat more fish) or their higher intake of green tea, or maybe even their lower consumption of carcinogenic, heart damaging Omega 6 fatty acids. The point is that we don’t know, and copying part of someone else’s diet because you think you know what’s going on is erroneous.

Got this info from www.geocities.com/tbkfitness/l owfat.html
330 posted on 07/07/2002 3:16:35 PM PDT by Mr Frumble
[ Post Reply | Private Reply | To 310 | View Replies]

To: Nov3; All
I was not trying to be a wise guy, I was just curious.

Lets go with some more of my unsubstantiated claims, this one is from the MCDougal wellness center about the Zone and other low carb diets....

"Their popularity has finally caused a long over due backlash from the scientific community. The American College of Sports Medicine, The American Dietetic Association, the Women's Sports Foundation, and the Cooper Institute for Aerobic Research have made their concerns known in a recently published brochure titled "Questioning 40/30/30."

I have more from JAMA and the New England Journal of Medicine and I have about 50 Muscle-and-fitness, four sports medicines books, various nutrional tomes, and interviews frokm coaches of professional athletes.

This one is to Dana, I dont mind if you all believe in this stuff but I do not like to be insulted when as I said, almost the ENTIRE scientific community is on my side.

331 posted on 07/07/2002 3:20:11 PM PDT by Arioch7
[ Post Reply | Private Reply | To 327 | View Replies]

To: Mr Frumble
There health HAS been going down hill lately but I will pull up the relevant data since it appears to be needed. Oh and I eat sushi and drink green tea. Yes, I do follow a culture over a thousand years old that has been healthy for most of its existence

Lets see, this one is from the Joslin center which is a diabetic center affiliated with Harvard Medical School and considered the top dog in the field. Oh, and that probably means it is the best in the WORLD! Note this is a ccarb guideline for someone that has DIABETES for gods sake!

"For example, a 6' 2" tall man with diabetes who weighs 180 pounds and wants to maintain his current weight might be told he could eat 350 grams of carbohydrate spread out over the day. His goal would be to spread those grams out over the course of the day so that he doesn't send his blood sugars too high at any one time. If he is taking insulin or oral diabetes medication, he might also have to manage when he eats his carbohydrate in such a way that there is enough sugar from his meals in his bloodstream when his medication is working its hardest."

Oh, I can get some from MIT as well, they have a health center affiliated with HArvard. Might I suggest that YOU people are the ones that have the erroneous data?

332 posted on 07/07/2002 3:34:34 PM PDT by Arioch7
[ Post Reply | Private Reply | To 330 | View Replies]

To: Arioch7

Not to be a wise guy but isn't Mr. Atkins sick? I had heard he had heart problems? I am being serious here.

It could be intentional or careless incompetence. One a telling sign of intentional dishonesty the later a matter of ignorance and denial. IMO, considering your claim of not being a wise guy I'd say it was intentional dishonesty. For a person stating they are serious to refer to a doctor (Dr. -- a doctor that has been mentioned several dozen times on this thread) as mister (Mr.) has been one or the other -- intentionally dishonest or, ignorant of your own denial thus simply incompetent -- you chose.

333 posted on 07/07/2002 3:38:01 PM PDT by Zon
[ Post Reply | Private Reply | To 323 | View Replies]

To: Republican Wildcat
Good post. My papa used to say the best exercise is to push away from the table. One should be able to eat anything in moderation.
334 posted on 07/07/2002 3:48:06 PM PDT by Angelique
[ Post Reply | Private Reply | To 18 | View Replies]

To: Zon
One thing I have noticed is that people who follow his diet DO get very touchy indeed.

I heard a bit back, he had heart problems, so I asked the question. I dont use titles often, so I guess you got me there but do you really think I am dishonest or incompetent because I asked that question?

I myself love CG Jung and talk about his work in philosophy and psychology forums. I also talk about Sigmund Freud who I dont really care for but did you note that I do not use the term Doctor or Professor for either of them?

I think you are taking my criticism of Dr. Atkins a wee bit personal. You can go here and request a brochure by the American society of Spports Medicine... http://www.acsm.org/

However, they are a lot more harsh then myself in analyzing the low carb diet. Since I seem to be a bad person, then they would have to be evil incarnate.

335 posted on 07/07/2002 3:49:51 PM PDT by Arioch7
[ Post Reply | Private Reply | To 333 | View Replies]

To: Nov3
It's true -- Dr. Atkins had cardiomyopathy, which is infection of the heart muscle (just a note -- recently they've found that infection is a significant cause of heart attacks....)

An interesting discussion; however, something I haven't seen is extended discussion of the problems OTHER than obesity that are addressed by a low carbohydrate diet.

From what I have seen, obesity is a *symptom* of the underlying metabolic disorder (yes, this is a simplification of what does occur -- fat cells are more active biologically than most people know) and an aggravating factor; treating only one aspect of the problem, though, doesn't remedy all the problems....and what of those people who don't have obesity as a symptom/factor? Plenty of people of "normal" weight have unbalanced insulin metabolism!

A high level of insulin in the blood (hyperinsulinemia) is known to indicate an elevated risk of cardiovascular problems. Two examples:

1) a study where 1 group of dogs had insulin injected into their leg veins, and the control group was injected with a saline solution -- the first group of dogs had developed atherosclerotic plaques in their leg veins.

2) a study of policemen in Helsinki showed that those men with higher levels of insulin in their blood had a higher risk of heart disease (naturally, known as the Helsinki policeman study ;) )

As well, high levels of glucose in the blood (hyperglycemia) is extremely damaging to all parts of the body...that's why diabetes has so many associated complications such as blindness, loss of limbs, kidney failure, etc. This is a result of the process called "glycation", where glucose invades tissues such as nerve, blood, or muscle cells, or kidney nephrons, and essentially "caramelizes" it (of course, damaging it).

As well, since insulin is a hormone, if it is out of sync it can throw other hormones out of balance as well, including the sex hormones. I am a prime example of this -- I have an insulin-linked condition called "polycystic ovary syndrome", and one of the characteristics of this is male-pattern hair growth due to the elevated levels of male hormone in the blood, which is definitely NOT a desired characteristic in a woman! (other characteristics are: lack of or infrequent menstruation; impaired fertility; male-pattern baldness; obesity; greater risk of cardiovascular disease; greater risk of Type 2 diabetes; greater risk of uterine cancer -- definitely not something to take lightly.)

Unlike the low-fat diet (which, as previous posts indicated, was NOT based on solid scientific research before its imposition), the low-carb diet deals with the underlying problem of the imbalanced insulin mechanism.

As has been noted elsewhere, the current North American diet is FAR higher in sugars and starches than that of our hunter/gatherer ancestors, from whom we get our genetic inheritance. We simply are not designed to process that much glucose on a regular basis! and therefore it causes systemic damage over a long period of time (which is becoming progessively shorter, as the amount of sugars and starches in the average diet skyrockets). No wonder children are now being diagnosed with what was once called "adult-onset" diabetes!

It's a shame that Dr. Atkins' weight-loss regime and, in particular, the first stage of it, has been misinterpreted or simply not read properly. In another book of his (sadly, out of print) he expands on and explains his *entire* dietary regime. The weight-loss diet espoused in New Diet Revolution begins as a deliberately and carefully unbalanced diet to counter the metabolic disorder and "kick-start" weight loss; as the diet progresses, it becomes more balanced (but still much lower in carbs than the norm).

For those who are interested in the bodybuilding applications, do a Google search for "cyclical ketogenic diet".

As to the concern about kidney health, there is NO research that indicates that high protein damages normal, healthy kidneys. The only time that low protein is indicated, is when someone is in end-stage renal failure, basically where they're limping along on dialysis waiting for a transplant.

All glucose that is needed for body functioning (and a little bit IS needed) can be provided by protein and fat. The body can convert up to 58% of protein to glucose, and approximately 10% of fat (the glyceride portion) to glucose. The benefit of carbohydrate foods is not the carbs, but the micronutrients (such as the lycopene in tomatoes).

For someone who doesn't need to lose a significant amount of weight, the basic formula is to eliminate sources of refined sugars and starches, and keep the intake of high-glycemic foods such as baked potatoes to a minimum. High-fibre veggies are fine at any time! and low-carb substitutes such as almond meal instead of bread crumbs for dredging, or pork rinds instead of potato chips, are a good idea for anyone (surprise! pork rinds have less fat gram for gram than regular potato chips -- check the USDA database -- and they don't have the trans-fatty acids that are the truly bad fats as do potato chips).

Lots of other things I'd like to say, but I'll save it for later :)

336 posted on 07/07/2002 3:55:04 PM PDT by nanaimo12
[ Post Reply | Private Reply | To 327 | View Replies]

To: Arioch7
Yes I drink green tea also because of it's proven health benifits, not because the Japanese appear to be healthier. I myself am of 100% German ancestry. This means agrigculture did not arrive in my neck of the woods until a mere 5000 years ago, potatoes only 500 years ago. So I've decided to eat what my ancestors have been eating for the 35000 years before agriculture arrived, a diet which happens to low carb. And it works great for ME. It probably does not work great for a Japanese person.
337 posted on 07/07/2002 3:55:53 PM PDT by Mr Frumble
[ Post Reply | Private Reply | To 332 | View Replies]

To: Arioch7
Someone mentioned the "Pig Diet". I wonder if that person is aware of the physiological term "Ketosis"

Of course--that is the basis of the high protein, low carb diet. Many of the people on it probably know more about ketosis than you do, despite your smug question.

338 posted on 07/07/2002 4:04:10 PM PDT by jammer
[ Post Reply | Private Reply | To 19 | View Replies]

To: Dana113
Low carb does not mean whatever subjective measurement you decide to slap on it.

A daily intake of 37.5 grams of carbohydrate IS a low-carb diet. That is a FACT. One can't be subjective when stating a fact.

The fact is that Atkins has never claimed that one can lose weight on 37 grams of carbs.

Actually, he does and he doesn't at the same time. How is that possible? Read this:

(Note: All comments pertain to the 1999 edition of "Dr. Atkins New Diet Revolution").

- Atkins characterizes a study by Alfred Pennington as "exciting" because it demonstrated "success in dieters who restricted carbohydrate" (p. 67). Yet, he dismisses a study by Sidney Werner that did not demonstrate a low-carbohydrate metabolic advantage because the diet contained 52 grams of carbohydrate - "far too much for demonstrating ketosis and lipolysis" (p. 70). Problem is, the Pennington diet also contained 52 grams of carbohydrate. In fact, the two diets were identical. Pennington's study was rather vague: there was no control group and the amount of weight lost by the subjects was unspecified. Werner took Pennington's diet, added an isocaloric, high-carbohydrate control diet, confined his subjects to a metabolic ward for 35 - 49 days, and demonstrated that there was no difference in the rate of weight loss between the two diets.

You posted that study *TO ME* knowing that I was talking about Atkins.

Sorry, I didn't know mind-reading was a prerequisite for posting to this forum.

The problem is that your study is nothing CLOSE to Atkins and is not relevent to the discussion.

And the study you posted concerning the 35% fat, Mediterranean-style diet is??

...nor does he recommend a 1000 a day calorie diet [which does nothing but bring metabolism to a screeching halt after the initial weight loss and is probably mostly muscle loss anyway].

Let's take what you said here and apply it to that Schneider's Children's Hospital study you seem so fond of. The low-carb subjects in this study reportedly consumed an average of 1830 calories per day. The low-fat group consumed an average of only 1100 calories per day. Isn't it possible that the low-fat subjects lost less weight than the low-carb subjects because their metabolism was brought to a "screeching halt" by their low calorie intake, and that it had absolutely nothing to do with diet macronutrient composition?

339 posted on 07/07/2002 4:11:50 PM PDT by MArdee
[ Post Reply | Private Reply | To 325 | View Replies]

To: All
The greatest series of non-sequiters ever posted to FR:

Senator Pardek is like a real Senator. They like to proclaim that such and such is a huckster (see post #7) or harming people or wrong and then they propose to solve the problem. The Senators, like other members of congress manufacture problems so they can solve them and thus justify their jobs and unearned paychecks. They like to proclaim, "I'll use the government to compassionately protect the little guy."  In reality, they create problems that need not exist.

Politicians and bureaucrats create and implement roughly 3,000 new laws and regulations each year. That number increases on average from one year to the next. Each year they tell us that the new laws are "must-have laws" that people and society can't prosper without. They do that, so they imply, to keep people from running society headlong into destruction.

Yet how is it that citizens and the society they make up has managed to not only survive but increase prosperity when they didn't have this year's 3,000 new laws last year or for decades before? Likewise, how did citizens increase prosperity for decades prior to last year's 3,000 new must-have laws? And they do that despite a mountain of laws that they've already been saddled/burdened with. Thirty new laws a year is probably overkill. But 3,000 is insane.

During Clintons eight years in the White House alone, there were 25,000 new laws and regulations created. How many of those laws did you break? With that many laws piled on top of the ones that already existed virtually every citizen is a criminal.

However, if in a day it was physically possible to apprehended even one quarter of those lawbreakers society would come to a screeching halt. Yet with all these supposed criminals on the lose prosperity continues to increase.

Seems obvious that lobbyists and special interest groups seeking to buy access to government power in order to gain unfair competitive advantages would be non existent if politicians weren't putting government power up for sale in the first place. They sell the "little guys" snake oil (for example, a bogus/unhealthy dietary guide) while they sell access to government power to their big money donors/supporters.

Excuse me while I prepare my "Why Zon Is Like A Real (Paula) Zahn" essay.

340 posted on 07/07/2002 4:16:41 PM PDT by Senator Pardek
[ Post Reply | Private Reply | To 319 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-20 ... 301-320321-340341-360 ... 421-422 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson