Understand how to interpret the Nutrition Facts label and ingredients list. Identify what to look for based on personal health goals or conditions. Learn how to spot and question misleading front-of-package claims.

When it comes to reading food labels, it’s important to understand that not all labeled foods are created equal. According to the United States Department of Agriculture (USDA), a processed food is any raw agricultural product that has undergone changes such as washing, cutting, milling, cooking, freezing, or packaging—basically, anything that alters it from its natural state. This means that both a bag of potato chips and a container of plain yogurt fall under the “processed” umbrella, even though their nutritional value is vastly different. Rather than assuming all labeled or processed foods are unhealthy, it’s more helpful to think of processing as a spectrum. The key question is: how processed is too processed? When does nutrient density start to decline to the point where the food no longer supports your health goals?

Foods Not Requiring a Label

While most packaged foods come with a Nutrition Facts panel, not all food items are required to carry one. In the U.S., there are several common exemptions. For example, single-ingredient, unprocessed foods like fresh fruits and vegetables (e.g., an orange or a head of lettuce), plain bottled water, or basic pantry staples like salt are not required to have nutrition labels. Very small packages, such as bite-sized candies, may also be exempt, especially if they don’t make any nutritional claims. Additionally, restaurants and small food businesses with fewer than 25 locations typically aren’t required to provide nutrition information. Foods sold at school or community fundraisers are another category often exempt from labeling requirements. Other exceptions include products like alcoholic beverages, fresh herbs, and spices. It’s also worth noting that even some foods without labels may contain added ingredients such as salt, sugar, fats, or preservatives, so knowing how to spot those or ask questions when needed is still important.

Learn more about understanding the Nutrition Facts Label in our video below:

Anatomy of a Label

The Nutrition Facts label, found on most packaged foods and beverages, was updated in 2016 by the U.S. Food and Drug Administration (FDA) to reflect the latest scientific findings and help consumers make more informed dietary choices. This was the first major update in over 20 years and aimed to address public health concerns such as heart disease. Larger manufacturers were required to comply by January 1, 2020, while smaller manufacturers could wait an extra year [1].

The revised label design removed outdated or less relevant information and introduced new required nutrients. For example, “Calories from fat” was eliminated, as research shows the type of fat matters more than the amount. Vitamin A and Vitamin C are no longer mandatory, since deficiencies are now rare, though manufacturers can still list them voluntarily. New additions include “Added Sugars,” which help consumers distinguish naturally occurring sugars from those added during processing. To me, I found this to be a welcome and critical update, as excess added sugars can crowd out more nutrient-dense foods, and the previous label made it difficult to determine which sugars were added and which occurred naturally in a food item [2]. Vitamin D and potassium were also added as required nutrients because many Americans fall short of the recommended amounts, and both play key roles in reducing the risk of chronic diseases like osteoporosis and high blood pressure [3]. Calcium and iron remain on the label for similar reasons. Overall, these changes were designed to make labels more useful and aligned with current health priorities [4].

The Big Three

When it comes to reading a nutrition label, the first three things to zero in on are serving size, calories, and nutrients. Serving size is often more of a guideline than a rule since the portion listed on the label may not reflect how much you actually eat or need. Use it as a reference point, and adjust up or down based on your own hunger, goals, and lifestyle. Calories tell you how much energy you’re getting from that portion, but context matters here too. One of my favorite rules of thumb that I share with my patients is that about 100 calories provides roughly an hour’s worth of energy, especially if those calories come from a balanced mix of carbs, protein, and fat. And don’t forget: if you eat more or less than the serving size, you’ll need to multiply or divide to know your true calorie intake. Finally, check the nutrients, not just the macros (carbs, protein, fat), but also how they fit into your overall pattern. For example, if a food is carb-heavy and you’re trying to keep carbs in check, you have options: you can skip it, swap it for something more balanced, portion it out, or pair it with protein or healthy fat to round it out (think: adding nuts to oatmeal).

Daily Value

Another key piece of the Nutrition Facts label is the % Daily Value (%DV) which is your quick guide to whether a food is low or high in certain nutrients. Like most numbers on a food product, I recognize that doing math can be tricky for most people, but the %DV shows how much one serving contributes toward the recommended daily intake for an average healthy adult eating about 2,000 calories per day. As a rule of thumb, 5% DV or less is considered low, while 20% DV or more is considered high. This makes it easy to spot foods that might help you limit certain nutrients (like saturated fat, sodium, or added sugars) or boost ones you want more of (like fiber, calcium, vitamin D, or potassium).

For perspective, nutrition guidelines suggest keeping saturated fat below 10% of your total calories, sodium between 1,500–2,300 mg per day, and aiming for 25–35 grams of fiber. On the flip side, nutrients like vitamin D (600 IU), calcium (1,000–1,200 mg), iron (11–18 mg), and potassium (2,600–3,400 mg) are often under-consumed, so %DV can help you see at a glance whether a food is a good source.

In short, the %DV is a handy tool for comparing products side by side and making choices that better align with your health goals.

Ingredients List

Finally, don’t skip over the ingredients list as it can give you valuable context beyond the numbers on the Nutrition Facts panel (for example, this is where you can cross check added sugars listed in the ingredients section).

You may have heard advice like, “If your grandma can’t pronounce it, don’t eat it.” While catchy, that rule isn’t exactly science-based. Plenty of nutrients have names that sound intimidating but are perfectly healthy: tocopherol is just vitamin E, and riboflavin is vitamin B2. (No offense to your grandma, but that’s more of a language and learning concern than a fear of “chemicals” in food.)

Ingredients are listed in descending order by weight, so the first few items make up the bulk of the product. (I liken this to a recipe where you can think of it as you would measurements like 1 cup, 1/2 cup, 1 Tbsp, 1 tsp, and so on.) This is where you can spot things like added sugars, refined grains, or sources of fat, and decide if that aligns with your nutrition goals. In other words, the ingredient list is a tool for awareness, not something to fear.

Sugar & Sweeteners

Sugar is one of the most watched—and sometimes confusing—parts of the Nutrition Facts label. When you see sucrose listed, that’s simply table sugar, which provides about 4 calories per gram. Many other sugars end in “-ose,” such as glucose, fructose, and lactose, so learning to recognize those names can help you spot added sugars in products.

Things get trickier when it comes to sugar substitutes and sugar alcohols. Common sugar alcohols you’ll see on labels include sorbitol, erythritol, xylitol, maltitol, mannitol, lactitol (anything ending in -ol), isomalt, and hydrogenated starch hydrolysates (HSH). These are often used in “sugar-free” candies, gums, or baked goods. While they can cut down on calories and help manage blood sugar compared to regular sugar, they may also cause bloating, gas, or diarrhea if eaten in large amounts, though tolerance varies from person to person.

Then there are non-nutritive (artificial or alternative) sweeteners, which provide little to no calories but give a strong sweet taste, often hundreds to thousands of times sweeter than sugar. The FDA has approved seven of these, including aspartame, sucralose, and stevia, and considers them safe when consumed within acceptable daily intake limits. Still, research continues on how they may affect long-term health, particularly in relation to gut health, cravings, and appetite regulation [5].

It’s also worth noting that the terminology around sweeteners can be murky. Some products marketed as “natural,” like certain forms of stevia, are actually processed or refined, while some artificial sweeteners are derived from natural sources (for example, sucralose comes from sugar). The bottom line: sugar substitutes can be a helpful tool for reducing added sugar intake, but they aren’t a free pass to unlimited sweets. Pay attention to how your body responds, and remember that balance matters more than any single ingredient.

Top Allergens

Food allergies affect millions of people, and that’s why allergen information on food labels is so important [6]. In the U.S., the Food Allergen Labeling and Consumer Protection Act (FALCPA) requires that the “Big 9” allergens are clearly identified: milk, eggs, fish (like bass, flounder, cod), crustacean shellfish (such as crab, lobster, shrimp), tree nuts (like almonds, walnuts, pecans), peanuts, wheat, soybeans, and sesame (added in 2023). These allergens must be listed in plain language, either within the ingredient list (e.g., “whey [milk]”) or in a separate “Contains” statement.

You may also see advisory phrases such as “may contain” or “produced in a facility that also processes…”. These are voluntary but important: they warn of possible cross-contact during manufacturing, which can still pose a risk for people with allergies or sensitivities. For those with severe allergies, these warnings mean the product isn’t guaranteed safe.

A unique challenge has emerged with sesame labeling since the FASTER Act took effect in 2023 [7]. Some manufacturers, rather than upgrading their facilities to prevent cross-contact, have chosen to add sesame (often as sesame flour) directly into recipes so that they can legally label it without changing production processes. While technically compliant, this practice has reduced safe options for people with sesame allergies and has been widely criticized by allergy advocacy groups as undermining the spirit of the law.

In short, allergen labeling exists to protect consumers, but it requires careful reading. If you or someone you care for has food allergies, always check both the ingredients and any advisory statements, and be aware of changes in how sesame is being handled in packaged foods.

Health Claims on Packaging

I always say that the front of a package is fiction, and the back is fact and this is because marketing matters and food manufacturers know how to use language that entices consumers. That said, they can’t make bold promises like “this cereal will lower your cholesterol by 30% in two weeks,” but they can make broader statements that lean on established science.

For example, because oats have been shown to help lower cholesterol, a cereal made with oats is allowed to say it “may help lower cholesterol as part of a heart-healthy diet.” The FDA permits these kinds of health claims only when there’s strong evidence to back them up. You’ll see similar claims tied to certain nutrients and foods: calcium and vitamin D in relation to osteoporosis; low saturated fat and cholesterol for heart health; low sodium for blood pressure; sugar alcohols for dental health; fiber-rich fruits, vegetables, and grains for digestive and heart health; folic acid for reducing the risk of neural tube defects in pregnancy; and soy protein, plant sterols, and stanols for lowering cholesterol. These claims are based on real science, but remember, they’re also marketing tools. They highlight one positive aspect while conveniently leaving out less flattering details. That’s why it pays to look past the flashy promises on the front and flip to the back of the label where the facts live.

Marketing Red Flags

Here’s where that front-of-package fiction vs. back-of-package fact idea really comes into play. Food companies are masters at making their products look healthier than they really are. One big red flag is when added sugars show up in disguise; words like “cane juice,” “maltodextrin,” or “evaporated syrup” are all just sugar by another name. The same goes for flashy claims around artificial sweeteners, additives, or so-called “superfoods” in highly processed foods [8].

Take, for example, General Mills’ line of “superfood” cereals. The boxes boasted claims like “more zinc than chia seeds” or “just as healthy as a sweet potato.” Sounds impressive until you notice that each bowl also came with around 20 grams of added sugar. That’s not exactly what I would consider a heart-healthy breakfast and think it’s leading consumers into a false sense of health security. Similarly, flip-top yogurts that let you stir in chocolate chips, candy-coated granola, or sugar-sweetened dried fruit might look like a balanced snack on the surface, but at the end of the day, they’re more dessert than nutrition.

This doesn’t mean you can’t enjoy these foods, If you know me, you know that I believe in food freedom, and there’s room for fun foods in a balanced diet. But it’s important to separate the marketing spin from the nutritional reality. If someone is trying to boost their zinc intake or support hormone health, I wouldn’t suggest a “cereal superfood” with a sugar load. Whole foods like seafood, beans, nuts, and seeds are far more reliable nutrient sources. I share this story often in my classes: I once had a patient who bought a chocolate chip muffin labeled with pea protein and the claim “contains one serving of vegetables.” She thought she was making a smart choice, but in reality, it was still just a muffin with some extra protein powder mixed in. Truthfully, I would categorize this more as a treat than a vegetable.

Pro Tip: If a product sounds too good to be true, it probably is. Always flip the package and check the Nutrition Facts and ingredient list which tell the real story, not the flashy claims on the front.

The Future of Front-of-Package Labels

At the time of writing, the FDA is proposing Front-of-Package (FOP) Nutrition Labeling that would require most packaged foods to display a simplified “Nutrition Info” box on the front [9]. The goal is to give consumers at-a-glance nutrition information so they can quickly understand how a product fits into a healthy diet. This box would complement, not replace, the traditional Nutrition Facts panel on the back.

The FOP label is designed to interpret key nutrients—saturated fat, sodium, and added sugars—using clear descriptors like “Low,” “Medium,” or “High”, making it easier for shoppers to make informed choices without doing the math themselves. While this may eventually challenge my long-standing mantra that the front of the package is “fiction,” I see it as a positive step. With accurate, standardized FOP labeling, the front of the package will finally start to tell some of the truth, though the back will always remain the ultimate source of facts. In other words, the mantra might evolve from “front is fiction” to “front is a helpful hint, back is the full story.”

For more details, you can explore the FDA’s proposal here.

Chronic Disease Management and Personalized Strategies

When I work with my patients, I emphasize that reading food labels isn’t just about what’s in your food, but also how it might impact your health. For those managing chronic conditions like gastrointestinal issues or kidney disease, certain nutrients—like sodium, protein, or potassium—may need to be monitored closely. The approach I take with my patients is to use the label as a practical tool to make safer, more informed choices that fit their individual health needs.

I usually implement this rule of thumb when it comes to sodium: the number next to sodium should be no more than 2x the number next to calories. Yes, the units are different: one is milligrams and the other is calories, but you’re only comparing numbers. In the fictitious food item represented in the label below, there are 230 calories, so 230 x 2 = 460 and sodium is at 160mg, which is less than 460. That’s not too high an amount of sodium, so it may not cause any problems. (Notice how you can also cross-check this in the %DV.) If you found an item that was higher and you’d prefer to have something lower in sodium, then shop for a comparable product that is marked as “low salt” or “low sodium” [10]. But be sure to also compare other items and ingredients listed because, as is often the case, when one ingredient is removed, something else is usually added to make up for flavor.

Everyone’s situation is different, so I encourage patients to interpret labels in the context of their personal health goals and medical guidance. For more detailed strategies, I often refer them to our past wellness webinars, which provide guidance on what to include, limit, or avoid for special diets. By taking this personalized approach, food labels become more than numbers and ingredients; they become a roadmap for supporting long-term health.

When There’s No Nutrition Facts Panel

Not all foods come with a Nutrition Facts panel—think fresh produce, meats and fish at the supermarket counter, salad bars, or meals from restaurants [11]. When you need nutrition information for these items, there are several practical options. You can use online databases like the USDA’s FoodData Central, check restaurant websites, or consult calorie-tracking apps such as MyFitnessPal [12]. In some cases, looking up nutrition information for a similar food or using established food lists can help you estimate portions, calories, and carbohydrate content.

While you won’t get a perfectly precise analysis without a label, these resources are often accurate enough to guide balanced choices. And, of course, working with a registered dietitian (like me!) can make this process much easier. A dietitian can provide personalized guidance on estimating nutritional intake for unlabeled foods, helping you make informed decisions while staying aligned with your health goals.

Putting It All Together: Fiction vs. Fact

Reading food labels can feel overwhelming at first, but breaking it down into serving sizes, calories, nutrients, %DV, ingredients, sugars, allergens, and health claims makes it much more manageable. Remember, the front of the package is often marketing with bold claims and flashy graphics are designed to catch your eye, while the back of the label tells the real story.

Use labels as a tool to make choices that fit your individual health goals, whether you’re managing chronic conditions, limiting certain nutrients, or simply trying to eat a balanced diet. Even for foods without labels, resources like the USDA FoodData Central, restaurant websites, or a registered dietitian can help you estimate nutrition and make informed decisions.

By keeping the mantra of “front is fiction, back is fact” in mind, you can shop with confidence, cut through marketing hype, and use food labels as a practical guide to support your health every day.

References:

1. ‌‌Nutrition, C. for F. S. and A. (2022). Small Business Nutrition Labeling Exemption Guide. FDA. https://www.fda.gov/food/labeling-nutrition-guidance-documents-regulatory-information/small-business-nutrition-labeling-exemption-guide
2. American Diabetes Association. (n.d.). Reading food labels | ADA. Diabetes.org. https://diabetes.org/food-nutrition/reading-food-labels/making-sense-food-labels
3. Cui, A., Xiao, P., Ma, Y., Fan, Z., Zhou, F., Zheng, J., & Zhang, L. (2022). Prevalence, trend, and predictor analyses of vitamin D deficiency in the US population, 2001–2018. Frontiers in Nutrition, 9. https://doi.org/10.3389/fnut.2022.965376
4. Human Foods Program. (2024). Industry Resources on the Changes to the Nutrition Facts Label. U.S. Food and Drug Administration. https://www.fda.gov/food/nutrition-food-labeling-and-critical-foods/industry-resources-changes-nutrition-facts-label
5. Conz, A., Salmona, M., & Diomede, L. (2023). Effect of Non-Nutritive Sweeteners on the Gut Microbiota. Nutrients, 15(8), 1869. https://doi.org/10.3390/nu15081869
6. FDA. (2021). Food Allergies: What You Need to Know. FDA. https://www.fda.gov/food/buy-store-serve-safe-food/food-allergies-what-you-need-know
7. FARE Responds to Companies Intentionally Adding Sesame Flour as FASTER Act Goes Into Effect. (2023). FoodAllergy.org. https://www.foodallergy.org/resources/fare-responds-companies-intentionally-adding-sesame-flour-faster-act-goes-effect
8. FDA. (2024). How to Understand and Use the Nutrition Facts Label. FDA. https://www.fda.gov/food/nutrition-facts-label/how-understand-and-use-nutrition-facts-label
9. FDA. (2024). Front-of-Package Nutrition Labeling. U.S. Food and Drug Administration. https://www.fda.gov/food/nutrition-food-labeling-and-critical-foods/front-package-nutrition-labeling
10. THE SIX SALTY SALTY. (n.d.). https://www.heart.org/-/media/aha/h4gm/pdf-files/salty-six-adults-english-infographic.pdf
11. Understanding Food Nutrition Labels. Www.heart.org. https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/nutrition-basics/understanding-food-nutrition-labels
12. U.S. Department of Agriculture. (2024). FoodData Central. FoodData Central. https://fdc.nal.usda.gov/