The Sweet Trap in the History of the Dietary Guidelines for Americans — Grandma Kouzi
On 7 January 2026, the first morsel of drama a foodie like me got to sink her teeth into this new year: the United States published its new Dietary Guidelines for Americans. One announcement, a thousand opinions — everyone had their own take, and the debate roared on. The most immediate change? A single image tells the whole story.
“The old dietary guidelines guaranteed a spike in cardiovascular and endocrine diseases — and that’s where the enormous profits of pharmaceutical companies and hospitals come from!”
Today I’ll seize the chance to revisit the history behind the US Dietary Guidelines.
One: From a Fabricated Academic Paper to the First Dietary Guidelines for Americans
Before the first edition was issued on 23 January 1980, a US Senate committee — the Select Committee on Nutrition and Human Needs — had published a set of Dietary Goals in 1977. Although this was an official document, it was widely regarded as lacking in scientific rigour. So in 1978 D. Mark Hegsted, a professor of nutrition at Harvard University and a PhD in biochemistry, joined the USDA as Administrator of the Human Nutrition Division and drafted the first-ever US Dietary Guidelines.
On paper, Mark Hegsted was the right professional for the job — credentials matched to the task perfectly. And yet, those who sought science and fairness walked straight into a sweet trap — a trap laid by the sugar-food industry.
The Sugar Association of the United States was founded in 1943. In that era, America’s food industry was transforming from a patchwork of scattered meat-packing operations into multinational giants with sprawling supply chains, a landscape defined by two pillars: “meat processing” and “food processing”.
At the outset, the association was called the Sugar Research Foundation. It was renamed the Sugar Association in the 1970s. The reason for the change was, to put it gently, revealing: supposedly to “represent more broadly the interests of US sugar producers and consumers.” Those in the know knew better — what the association genuinely represented were the interests of sugar producers.
Every funder of the Sugar Association was a sugar-related enterprise. Collectively they poured money into a great deal of heart disease research. They did so not because food barons suddenly developed a passion for medicine and decided to save lives, but because they needed “scientific research” to prove that sugar was not the culprit behind heart disease. At its core, the Sugar Association’s goal in funding medical research was to divert public attention — and, more precisely, to shift the blame for heart disease, the number-one killer of Americans, from sugar to fat.
Some background on the 1940s and 1950s is essential here. At the time, heart disease was the leading cause of death in the United States, and just the word “heart” could make people turn pale. In 1955, the sitting president — General Dwight D. Eisenhower, a sixty-four-year-old Second World War hero — suffered a sudden heart attack. For six or seven weeks Vice President Nixon stepped in as acting president. The episode drove the already mounting “heart disease panic” to its peak.
Post-war America had begun to tower over the rest of the world; the best opportunities and the greatest wealth were all here. Americans were gripped by an all-consuming fear of death — understandably so. When times are good, who doesn’t want to live a little longer and savour a little more? Heart disease research became a subject of intense national fascination and attracted the finest minds the country had to offer.
But what the public did not know was that heart disease research had also caught the Sugar Association’s eye. From its very founding, the association had been funding studies on cardiovascular disease and diet. In that era, heart disease was rampaging and science was hot on the trail of the culprit. If sugar were to be nailed to the pillory and hauled out for public condemnation, how would the sugar bosses with fortunes riding on the outcome bear the shame?
In that period, the US food-processing industry (encompassing sugar, meat packing and dairy) accounted for roughly 2 to 3 per cent of GDP, but made up as much as 15 to 20 per cent of manufacturing — a vital pillar of America’s post-war industrialisation. It is worth noting that food processing had previously been dominated by meat packing; canned food had surged during both world wars, but the growth engine after the war was sugar and the food-processing industry built around it. The rising sugar magnates needed scientific studies to tell the American public: the true culprit behind heart disease was not sugar but the neighbour next door — fat.
With enough money, even ghosts can be made to push the mill — and this time, science was that ghost. In 1967, three Harvard professors published a paper in The New England Journal of Medicine, one of the world’s most prestigious medical journals, declaring that sugar had no link to heart disease.
Of the three Harvard professors who sold human health down the river for a pittance, two were household names of considerable renown. One was Frederick Stare, the founder of the Department of Nutrition at Harvard School of Public Health, who had championed public-health strategies such as regular exercise and water fluoridation. The other was Mark Hegsted, the man already mentioned as the drafter of the Dietary Guidelines for Americans. In 1980 the first edition was published. Its headline message: “Given the growing threat that heart disease poses to the American people, the public is advised to reduce saturated fat intake for the sake of their lives.”
Everyone on the planet knows by now that the human heart is a fragile thing and needs careful tending. Excess sugar and fat are the principal drivers of heart disease. Sugar and fat are clearly tied for gold — on many measures sugar even edges ahead — yet it was only fat that got hoisted onto the podium at the awards ceremony.
Blaming heart disease on fat was a “groundbreaking achievement” manufactured hand in hand by the sugar lobby and scientists. Under the guidance of such “science” and such guidelines, Americans slashed their fat intake by 25 per cent over half a century. By 2016, heart disease was still the top killer of Americans, and obesity and diabetes were closing fast behind it. The real culprit was that sweet, sweet sugar. Americans have been living life far too sweetly.
II. A Lifetime of Glory: Ancel Keys Unmasked Beyond the Grave
The study was led by Ancel Keys of the University of Minnesota, who held PhDs from both the University of California and the University of Cambridge and was a hugely respected interdisciplinary authority in nutrition and physiology. Beyond the Seven Countries Study, he was also a key champion of the Mediterranean diet and once graced the cover of Time magazine for his research on cholesterol.
The Seven Countries Study data showed that fat was the culprit behind heart disease. What the scientist did not mention, however, was that his study had actually sampled populations across 22 countries. Why, then, was the final published paper titled the “Seven Countries Study”? Because he discarded the 15 countries whose data did not support his conclusion, selecting only the seven that best matched his hypothesis: the United States, the United Kingdom, the Soviet Union, Italy, the Netherlands, Finland and Greece.
Moreover, within the samples from those seven countries, he cherry-picked only the data that favoured his case and even inserted “fabricated statistical adjustments” into his models to inflate the correlation between fat and heart disease. From a survey pool of 12,770, this most influential epidemiological study of its day selected just 499 subjects……
Keys’s academic misconduct extended well beyond data manipulation in the Seven Countries Study; he also suppressed and silenced dissenting scholars.
At the height of the Seven Countries Study’s fame, John Yudkin of the University of London published a finding at precisely the wrong moment: the correlation between heart disease incidence and sugar consumption was higher than that between heart disease and fat. Yudkin held a medical doctorate and served as Professor of Physiology and Nutrition at London University. One of the early advocates of the case against sugar in the twentieth century, he published Pure, White and Deadly in 1972, dissecting the links between sugar and cardiovascular disease, obesity and metabolic syndrome.
The pro-sugar camp and Keys pursued Yudkin on every front, even filing false accusations that he had taken kickbacks from meat and dairy companies. This left the once-distinguished British scientist utterly discredited — a veritable “social death” in his field: sponsors withdrew their commitments and refused to back the academic conferences he convened; journals refused to publish his papers; research institutions would not invite him to symposiums; the Sugar Bureau dismissed him as “too emotional”; his book was derided as science fiction……
Battered in his career, Yudkin spent his later years in despondency and died at the age of 77. Keys, by contrast, basked in glory his entire life and lived to a great age — born in January 1904 and passing in November 2004, he was a centenarian who lived well past a hundred.
Keys was a key champion of the Mediterranean diet and practised what he preached. Although I cannot find the exact menu of this long-lived man, one can reasonably infer from the principles of the Mediterranean diet that his plate never included added sugars — nothing like the saccharine lives of the American public.
III. The Evolution of Dietary Guidelines
By the 1990s, the ranking of America’s food industries had shifted from the traditional pillars of meat processing, sugar, and canned foods to sugar, meat, and beverages. Concepts like “low fat” and “low cholesterol” reigned supreme, and the market share of related products surged. Consumers were led by the nose by delicious “low-fat” foods. Scientists “researched” in one direction, the state pushed in the same direction, advertising agreed to tout it, and companies gleefully rode the wave — lacing products with ever more sugar to compensate for the loss of fat’s mouthfeel, quietly steering humanity into a new era of low fat, high sugar, and epidemic rates of obesity and diabetes.
As the new century dawned, things began to change. The Dietary Guidelines for Americans shifted from “nutrient restriction” to “dietary patterns” — that is, they began to emphasise cutting processed foods and eating more whole foods. The guidelines issued in 2020 had already started to ‘limit added sugars’ and had opened the discussion around ‘ultra-processed food.’ Unlike previous editions, which were thick as tomes, this year’s guidelines run to a mere ten slim pages. The moment the new edition dropped, the public erupted — everyone had their own take — and the commentary on it, both in volume and in heat, has far outstripped the guidelines themselves.
Back to sugar. The previous edition of the Dietary Guidelines for Americans, while already curbing added sugars, still permitted their inclusion in foods for children over two. In the past, the wording on sugar was typically ‘reduce intake is recommended,’ with a cap of ‘added sugars < 10% of total daily calories.’ But this edition takes an extremely hardline stance on added sugars: ‘No amount of added sugars or non-nutritive sweeteners is recommended, nor are they part of a healthy or nutritious dietary pattern,’ and it advises avoiding added sugars entirely during infancy and toddlerhood, and recommends that children aged five to ten consume no added sugars at all.
I agree that sugar should not be considered part of a healthy or nutritious dietary pattern, but I have my doubts about feasibility — a topic for another piece; I cannot do it justice here.
Almost every major update to the dietary guidelines has triggered a wave of transformation across the food industry. Because the Dietary Guidelines for Americans have consistently reinforced the notion that ‘less fat equals health,’ the food industry completed its commercial translation of that idea, and ‘healthy foods’ such as “low-fat yoghurt” and ‘sugar-free drinks’ emerged to spearhead a new wave of revenue growth.
Today, the food industry accounts for roughly 3.5 per cent of US GDP, a share that has been edging steadily upward, albeit modestly. But the sheer scale of US GDP today is incomparable to what it once was. The number-one food company back in the days of the first edition had annual revenues of only about ten billion dollars; PepsiCo’s now exceed ninety billion. Mega-food corporations’ influence on health trends and consumer fashions has swept the globe, and their formidable R&D and capital firepower allow them to pivot product portfolios at breakneck speed. Who knows what new gimmicks they’ll roll out next to seize the next high ground.
Since the guidelines change every few years and can hardly be called dependable, what healthy-eating principles do ordinary people still have? In true Granny-Wang-sells-her-own-melons spirit, let me take the liberty of blowing my own trumpet a little and invite you all to click the link below to revisit the healthy-eating tips I have shared with you before!
Edited by: Xiaodan