Why the 'Healthy' Labels on Your Groceries Mislead You

The next time a box shouts 'Healthy' Labels like "low fat," "high fiber," or "all natural" at you from the grocery shelf, take a breath before you toss it in the cart. A sweeping new analysis of the American packaged-food market suggests those badges are designed to sell you something first and nourish you second.

Researchers led by Pei Zhou, working with food marketing professor Miguel Gomez at Cornell University, examined 145,609 newly launched food and beverage products sold in the United States between 2015 and 2024. Drawing on product data from the market research firm Mintel, the team scored every item with a nutrient profiling model developed in the United Kingdom, which weighs a product's full nutritional makeup at once — penalizing excess sugar, sodium, saturated fat, and calories while rewarding fiber, protein, and fruit and vegetable content. The findings, published in the journal Nature Food, were reported by Medical Xpress.

The team sorted the packages into four kinds of health-related claims: products boasting reduced nutrients, products advertising added beneficial nutrients, products touting natural attributes, and products promising functional health benefits. Then they asked a simple question: do packages carrying these claims actually score better?

The claims hold up — until they don't

According to the analysis, products with claims often had more favorable nutritional profiles overall. But the relationship was inconsistent across claims and product categories, and some claims pointed in the wrong direction entirely. Products highlighting reduced trans fat in foods and reduced sodium in beverages were associated with poorer overall nutritional quality than their claim-free counterparts. The claim was technically true; the whole food was not necessarily better.

The trouble, the researchers found, usually hides in the formulation fine print. Zhou described stumbling on the idea while shopping: she noticed an original cream cheese next to a lower-fat version. "They had reduced the fat, but they had more total sugars and more sodium," she said in an interview. "There are so many label claims on packages. Our main question was whether products with claims are healthier than those without health claims." A "reduced sodium" soda, the analysis found, is disproportionately likely to make up the difference with extra sugar. A "no trans fat" packaged meal often leans harder on saturated fat and salt instead.

Why the label sells even when the food doesn't

The headline numbers explain why this matters at the checkout. More than half of the newly launched products carried at least one of the studied claims, yet roughly two-thirds of all products analyzed qualified as less healthy under the nutrient profiling model. As the science writer Ted Kyle noted in a commentary on the research, a "Blue Zones Kitchen Heirloom Rice Bowl" marketed as crafted for longevity will probably sell briskly on the promise — whether or not it grants anyone extra years. Health claims on food, in other words, promote sales more reliably than they promote health.

To be fair, the researchers stress that the picture is not one of outright deception. A claim about one desirable attribute tells you little about the whole nutritional picture, but it is rarely false on its own terms — and products with claims did skew healthier in several categories. The study is also observational: it maps associations between labels and quality across a decade of new launches, and it applies a British scoring model to American products, which may not capture every nuance of the U.S. diet. Still, the pattern held across a dataset far larger than anything previously tested, which is what makes it hard to dismiss. Similar skepticism is already surfacing in policy debates — Brazil recently pushed global health authorities to restrict ultra-processed food marketing, arguing that packaging promises keep outpacing nutrition, as GenZ NewZ reported.

How to shop smarter than the label

For shoppers, the practical takeaway is refreshingly low-tech: flip the box. The front of the package is advertising; the nutrition facts panel and ingredient list are the product's resume. Compare sugar, sodium, and fiber per serving across similar items rather than trusting a single badge, and watch for the trade-off the researchers kept finding — when one nutrient gets a starring role on the front, another one is often doing extra work on the back.

The same healthy-skepticism muscle helps beyond the cereal aisle. Viral food trends get the same treatment on social feeds, where a single "healthy" claim can travel faster than any evidence — a recent chocolate trend got a reality check for exactly that reason, and the viral protein-bowl craze ran into similar scrutiny over what its label-style promises left out. 'Healthy' Labels are a starting point for a question, not the answer to one.