If you’re among the many Americans who check the Nutrition Facts label before making a purchase, you might assume you’re making informed choices. However, research indicates that approximately 1 in 5 individuals struggle to interpret this information accurately. Even those who feel confident could be falling into common traps, according to experts. Xaq Frohlich, PhD, author of From Label to Table: Regulating Food in America in the Information Age, notes that the label’s straightforward appearance “leads consumers to imagine it’s a coherent, simple, objective panel.” He adds, “But where the numbers come from are all very different.” To help you navigate this tool more effectively, here are three essential insights to consider during your next grocery trip.
1. The Daily Value Percentage Isn’t Tailored to You
The % Daily Value column on nutrition labels offers a quick way to assess whether a food might be a healthy option, but it comes with a significant caveat. This percentage reflects how much of the recommended daily intake is provided in a single serving, based on a standard diet of 2,000 calories per day. In reality, your personal nutritional requirements vary widely depending on factors like age, height, weight, and activity level.
For example, using the USDA’s intake calculator, an active 50-year-old woman who is 5’7″ and weighs 120 pounds needs about 2,100 calories daily, while at 190 pounds, this increases to 2,500 calories. A very active 50-year-old man who is 6 feet tall and 180 pounds requires approximately 3,350 calories, and a 35-year-old breastfeeding woman at 5’5″ and 170 pounds needs around 2,600 calories. Given this diversity, the daily values listed may not align with your specific needs.
Instead of fixating on exact percentages, use a broader approach. If a food provides 5% or less of a nutrient, consider it low in that component. Once it reaches 20% or more, it’s high. Most people should aim for foods higher in fiber, vitamin D, calcium, iron, and potassium, while limiting those high in saturated fat, sodium, and added sugars. Hope Barkoukis, PhD, chair of the nutrition department at Case Western Reserve University School of Medicine, illustrates this: “Let’s say I’m looking at a can of artichokes, and it’s around 20% for sodium. You can still have it, of course, but realize that choice is a high source. Conversely, it’s got 4% of total carbs. That’s saying it’s a low source.”
2. The Numbers Aren’t as Precise as They Seem
At first glance, the Nutrition Facts label appears to offer exact figures, but legal allowances introduce a degree of flexibility. For nutrients that health guidelines recommend limiting—such as calories, sugars, saturated fat, and sodium—the actual content can be up to 20% higher than what’s listed. Conversely, for naturally occurring nutrients in foods, the amount might be as much as 20% lower. Only added nutrients, like those in fortified products, must be reported accurately.
This leeway exists because manufacturers cannot control every variable; for instance, a package of frozen vegetables won’t have identical nutrient levels each time. Even the 2,000-calorie baseline and its associated Daily Values are approximations. Frohlich explains, “The people who decided this thought 2,000 was a round number, and people would understand that it was not a precise figure — that it was easy to do math with. It looks like this precise tool, but it’s designed in a way that recognizes that people aren’t precise about how they’re using it.”
The Daily Value itself is derived from two data sets: the Recommended Dietary Allowance (RDA), which represents the average daily amount needed by nearly all healthy individuals, and the Adequate Intake (AI), an estimate used when research is insufficient to establish exact requirements. On labels, the DV often aligns with the RDA or AI, but not always. Given this complexity, it’s best not to treat these numbers as guarantees. Instead, view them in general terms—like high or low—and use them to compare similar products for a more practical approach.
3. Pay Attention to Both Sugar Categories
Sugar information is listed under Total Carbohydrates, but it typically includes two entries: Total Sugars and Added Sugars. Unless a healthcare professional advises otherwise, the added sugars figure is the one to focus on. Joan Salge Blake, EdD, a dietitian and nutrition professor at Boston University and host of the nutrition & health podcast Spot On!, highlights a common misconception: “People look at the milk label and say, ‘I can’t drink milk.’ They don’t understand milk has a natural sugar called lactose. Yes, it has sugar, but no added sugar. This happens even with my nutrition students, who should already know.”
The Dietary Guidelines for Americans emphasize this distinction, recommending that no single meal contribute more than 10 grams of added sugar. By prioritizing added sugars over total sugars, you can make choices that better support your health goals without unnecessarily avoiding nutritious foods.
In summary, while the Nutrition Facts label is a valuable resource, understanding its nuances can help you use it more effectively. By recognizing that daily values are general guidelines, acknowledging the inherent imprecision in numbers, and distinguishing between types of sugars, you can shop with greater confidence and make choices that align with your wellness journey.
