Most nutrition discipline suggests that meals alongside the identical essential nutritional overview volition have the identical effect on a person’s lifeblood sugar.
But is there item concerning food handling itself that influences how our bodies respond?
Researchers exploring that inquiry were amazed to discover that minimally and extremely processed meals nutritionally matched on calories, carbohydrates, fats, proteins, water, salt, and importance produced distinct metabolic responses.
The ultraprocessed meals prompted the build to publish additional insulin and expend additional energy during burning small carbohydrate for fuel. They additionally evoked distinct responses in the part of the brain engaged in motivation and reward.
The results propose that food handling may power how the build and brain react to food in ways that go beyond carbohydrates, fat, and macromolecule — possibly assisting researchers comprehend why ultraprocessed foods have been connected alongside overconsumption and long-term health effects and pointing to new areas for research.
Virginia Tech researchers alongside the Fralin Biomedical Research Institute at VTC published their findings this duration in Nature Metabolism.
Ultraprocessed foods portray additional than fractional of the average American’s regular calories. Diets worldwide are additionally shifting to contain additional of such foods, which are formulated to be convenient, accessible, affordable, and extremely palatable, making them uncomplicated to overeat.
“If you appearance at that population-level data, group who consume ample amounts of ultraprocessed foods have higher rates of mediocre health outcomes — obesity, cardiac events, Type 2 diabetes, and equal several metrics of mental health,” stated Alex DiFeliceantonio, a Fralin Biomedical Research Institute affiliate prof whose lab led the study.
While extremely processed foods have been connected to disease, the mechanisms connecting handling alongside their health outcomes and overconsumption are small understood.
What they did
“We cognize that the bulk of ultraprocessed foods are elevated in fat, they're elevated in sugar, they're low in fiber, and they're low in protein,” DiFeliceantonio said. “But if we artificially clasp all of those things constant, is there item concerning the handling that leads to a distinct outcome?”
The squad recruited fit adults between 18 and 45 years old. The complete study consisted of 57 adults. Of those, 32 completed the two the brain functional magnetic resonance imaging (fMRI) and the metabolic sessions.
Each attendee ate the two types of meals in distinct sessions, alongside three or additional days between sessions. This allowed researchers to difference how the identical individual responded to all meal.
To analyze metabolic effects, participants arrived at the evaluation location following fasting overnight. They climbed onto a twin-size bed in a metabolic area — a sealed, airtight area used to measure individual energy expenditure and metabolism. Researchers afterward took baseline measurements.
An hr later, participants were stated 10 minutes to eat either a minimally or extremely processed meal of 300 nutritionally matched calories. In selecting the meals, the study used the Nova scale, which categorizes food in four groups according to the flat of manufacturing processing.
The extremely processed meal included a nip of peanut margarine and jelly sandwich, deli turkey, veggie chips, a cookie, cereal, instant mashed potatoes, and a small bit of water. The minimally processed meal included a sliced banana, dried cranberries, cheese, and egg.
“The two meals are matched inside 1 percent of carbs, fat, proteins, calories, water, and salt,” stated Zach Hutelin, a investigator at the institute and the study’s archetypal author. The study was part of his doctoral investigation through Virginia Tech’s Translational Biology, Medicine, and Health Graduate Program. “If these meals had a nutritional label, they would be practically identical.”
Blood draws were again taken immediately following the meal, afterward six additional times complete the next three hours. Researchers measured post-meal metabolism, including insulin response, energy expenditure, and carbohydrate oxidation.
“We were shocked whenever all sole metabolic metric differed,” Hutelin said. “What we noticed alongside the ultraprocessed food is that insulin reply was much higher and lifeblood sugar stays a small bit higher for a small bit longer.”
Chronically elevated lifeblood sugar increases the hazard of conditions akin diabetes.
The brain’s reward system
DiFeliceantonio is a neuroscientist who plant to comprehend the essential mechanisms of food choice — why we eat what we eat. She wanted to see if the metabolic reply to the meals connected to the brain's reply to food cues.
On a distinct day, participants viewed pictures of nutritionally matched extremely and minimally processed foods during undergoing functional MRI. The scan measures brain action by tracking changes in lifeblood stream throughout distinct regions of the brain. The foods served during the metabolic tests were among those shown in the pictures.
While viewing all food, participants reported how much they would be consenting to pay for it. This let researchers difference how participants’ subjective value of the foods corresponded alongside their brain activity.
One notable outcome engaged the ventral striatum and nucleus accumbens, part of the brain engaged in learning, motivation, and reward. Differences in how participants burned carbohydrates for energy following all category of meal were connected to differences in how their brains responded to pictures of food.
Participants did not say they were consenting to pay additional for the ultraprocessed or minimally processed foods, but the results suggested that metabolic differences produced by food handling are connected to differences in how the brain responds to food cues.
“A key conversation in the writings is whether [ultraprocessed food] associations alongside mediocre health outcomes are driven by food construction fairly than processing,” Carlos A. Monteiro of the University of São Paulo told Nature Metabolism. Monteiro is a Brazilian epidemiologist whose investigation into obesity led to the betterment of the global NOVA classification of food handling used in nutrition and community health studies. He noted that beyond metabolic response, the Roanoke squad looked at brain activity. “This is a novel and crucial contribution, as the brain ultimately regulates dining behavior.”
What comes next
This study looked at one set of matched 300-calorie meals, and study subjects were young and healthy. DiFeliceantonio, who additionally holds an project in the Department of Human Nutrition, Foods, and Exercise in Virginia Tech’s College of Agriculture and Life Sciences, would akin to analyze distinct populations, longer period periods, bigger meals, and additional pairings of minimally and extremely processed foods. While the meals served were matched on protein, for example, macromolecule sources were distinct and could have influenced the outcome.
The ultraprocessed meal additionally contained additional additives, and during the study did measure total fiber, it not explicitly measure bodily and chemic structures of the food studied.
“We desire to analyze particular factors, specified as business additives or particular handling steps, that power guide to distinct metabolic responses,” DiFeliceantonio said.
The investigation was funded by a National Institutes of Health investigation aid through the National Institute of Diabetes and Digestive and Kidney Diseases and a National Science Foundation alumnus investigation fellowship.
Original study DOI: 10.1038/s42255-026-01619-4
