A study published Monday in the Milbank Quarterly, an esteemed peer-reviewed health policy journal, indicated that ultra-processed foods “share key engineering strategies adopted from the tobacco industry, such as dose optimization and hedonic manipulation.”
While the overlap in approach and fallout is striking, it’s also unsurprising given the industries’ entanglements. After all, tobacco companies like R.J. Reynolds and Philip Morris acquired food companies such as Kraft, General Foods, and Nabisco in decades past.
‘Not simply natural products but highly engineered delivery systems.’
UPFs are defined by the NOVA food classification system as “industrial formulations made entirely or mostly from substances extracted from foods (oils, fats, sugar, starch, and proteins), derived from food constituents (hydrogenated fats and modified starch), or synthesized in laboratories from food substrates or other organic sources (flavor enhancers, colors, and several food additives used to make the product hyper-palatable).”
Grocery stores are replete with UPFs, which include store-bought biscuits; frozen desserts, chocolate, and candies; soda and other carbonated soft drinks; prepackaged meat and vegetables; frozen pizzas; fish sticks and chicken nuggets; packaged breads; instant noodles; chocolate milk; breakfast cereals; and sweetened juices.
Numerous studies have linked UPFs to serious health conditions.
A massive peer-reviewed 2024 study published in the BMJ, the British Medical Association’s esteemed journal, for instance, found evidence pointing to “direct associations between greater exposure to ultra-processed foods and higher risks of all-cause mortality, cardiovascular disease-related mortality, common mental disorder outcomes, overweight and obesity, and type 2 diabetes.”
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Photo by Patrick T. Fallon / AFP via Getty Images
In the new study published this week, researchers from Harvard University, Duke University, and the University of Michigan noted that like cigarettes, UPFS “are not simply natural products but highly engineered delivery systems designed specifically to maximize biological and psychological reinforcement and habitual overuse.”
The researchers identified a number of commonalities between ultra-processed foods and beverages, which apparently now dominate the supply across much of the globe, and ultra-processed cigarettes.
The primary reinforcer in ultra-processed cigarettes is nicotine, which is optimized for rapid delivery. UPFs also have primary reinforcers optimized for rapid delivery, namely refined carbohydrates and added fats.
Just as the nicotine dose in ultra-processed cigarettes is standardized — 1% to 2% by weight — “to balance reward and aversion,” the researchers noted that refined carbohydrates and fats are precisely calibrated in UPFs to “maximize hedonic impact.”
“On a biological level, carbohydrates and fats activate separate gut-brain reward pathways. Refined carbohydrates stimulate dopamine release via the vagus nerve, whereas fats do so through intestinal lipid sensing and cholecystokinin signaling,” said the study. “When consumed together, their effects are supra-additive: the mesolimbic dopamine response can rise to 300% above baseline, compared with 120% to 150% for fat alone.”
“This makes UPFs with high levels of refined carbohydrates and added fats some of the most potently rewarding substances in the modern diet,” added the study.
In both ultra-processed cigarettes and food, the reinforcers are reportedly rapidly absorbed or digested; the reward is short-lived, leading to a desire for more; flavorants and sweeteners are added to processed ingredient bases to amplify appeal; risks of use abound.
The researchers noted further that both the tobacco and food industries have also worked diligently in their marketing to “create the illusion of reduced harm while preserving their core addictive properties.”
“Many UPFs share more characteristics with cigarettes than with minimally processed fruits or vegetables and therefore warrant regulation commensurate with the significant public-health risks they pose,” said the paper.
The researchers indicated that their analysis demonstrates “how UPFs meet established addiction-science benchmarks, particularly when viewed through parallels with tobacco.”
The apparent aim of such scholarship is to provide the “basis for policies that constrain manufacturers, restrict marketing, and prioritize structural interventions.”
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Health, Ultraprocessed foods, Upfs, Food, Poison, Diet, Eating, Lifestyle, Cigarettes, Big tobacco, Obesity, Politics
