Interpreting Health Claims on Packaged Food
"Low fat," "natural," "multigrain"—these terms are regulated differently, or sometimes not at all. Know what each claim does and doesn't guarantee.
Photo: ReadersChronicle.com | Your Comprehensive Learning Destination editorial
—— In This Article
How the FDA Regulates Label Language
Not every health-sounding phrase on a food package carries the same legal weight. The U.S. Food and Drug Administration (FDA) distinguishes between several categories of label claims, each with different levels of scientific backing and regulatory oversight.
Nutrient content claims — such as "low sodium," "fat-free," or "high in fiber" — are strictly defined. The FDA sets precise thresholds a food must meet before manufacturers can use these terms. For example, "low fat" legally means 3 grams or less of total fat per serving. "Calorie-free" means fewer than 5 calories per serving.
Health claims link a nutrient or food to a reduced risk of a disease or condition. These require FDA authorization and must be supported by significant scientific agreement. An example: "Diets low in sodium may reduce the risk of high blood pressure."
Structure/function claims are a different matter entirely. Statements like "supports immune health" or "promotes digestive wellness" do not require FDA approval before appearing on a label. Manufacturers are responsible for their accuracy, but the agency does not pre-screen them. This is a critical distinction many shoppers overlook.
For a deeper look at navigating label information, see our guide to reading the Nutrition Facts label.
| Regulator of food label claims | U.S. Food and Drug Administration (FDA) |
| "Low fat" threshold | 3g or less total fat per serving (FDA nutrient content claim definitions) |
| "Calorie-free" threshold | Fewer than 5 calories per serving (FDA nutrient content claim definitions) |
| "Reduced" nutrient requirement | At least 25% less than the reference food (FDA nutrient content claim definitions) |
| Structure/function claim pre-approval | Not required by FDA |
| "Natural" — formal FDA definition | None for most food categories (FDA guidance documents) |
Common Claims Decoded
The following terms appear frequently on packaging but are often misunderstood.
Nutrient Content Claim
A label statement regulated by the FDA that describes the level of a nutrient in a food, such as 'low fat' or 'high in fiber.' Each term must meet specific legal thresholds.
Health Claim
An FDA-authorized statement linking a food or nutrient to a reduced risk of a disease or health condition, supported by significant scientific agreement.
Structure/Function Claim
A statement describing how a nutrient or ingredient affects normal body structure or function, such as 'supports bone health.' These do not require FDA pre-approval.
Multigrain
A term indicating a product contains more than one grain variety. It does not mean those grains are whole grains or that the product is nutritionally superior to single-grain options.
Reduced
Indicates at least 25% less of a specific nutrient — such as fat, sodium, or sugar — compared to the standard version of that product. It does not mean the absolute level is low.
Natural
A largely unregulated term on most food labels. The FDA has not issued a formal definition for it in the majority of food categories, so its use does not guarantee minimal processing or absence of additives.
"Natural" is one of the most misleading terms on grocery shelves. The FDA has not formally defined it for most food categories, meaning its use is largely unregulated. A product labeled "natural" may still contain high-fructose corn syrup, artificial preservatives, or heavily processed ingredients.
"Multigrain" simply means a product contains more than one type of grain — none of which need to be whole grains. A multigrain bread could be made primarily from refined white flour with small amounts of other refined grains added. This is meaningfully different from "whole grain" or "100% whole wheat." Learn more in our explainer on whole grain qualifications.
"Reduced" means at least 25% less of a given nutrient compared to the standard version — not that the level is low in an absolute sense. A "reduced sodium" soup may still contain a substantial amount of sodium per serving.
"Light" or "lite" can refer to calories, fat, or even color or texture in some contexts — the packaging must specify which attribute is lighter. Always check the Nutrition Facts panel to confirm what, exactly, is reduced.
Being aware of these distinctions can help you avoid common grocery shopping habits that quietly undermine your nutrition goals.
Making Practical, Budget-Wise Decisions
Health claims frequently appear on premium-priced products, yet a higher price does not guarantee greater nutritional value. Store-brand items without flashy label claims often contain comparable or identical nutritional profiles to their branded counterparts. Our article on why cheap food isn't always the least nutritious explores this in detail.
~73%
Americans who use front-of-pack claims to guide purchases
According to FDA consumer research on food label usage, a substantial majority of shoppers rely on front-of-package health claims when making purchasing decisions.
3g
Maximum fat per serving for an FDA "low fat" claim
This is one of several precisely defined nutrient content thresholds set by the FDA — illustrating that some claims carry real regulatory meaning.
The most reliable strategy is to look past the front of the package entirely. The Nutrition Facts panel and the ingredients list — both standardized and regulated — give you the actual data you need. Ingredients are listed in descending order by weight, so the first few items make up the bulk of the product.
When evaluating any health claim, ask three questions: Is this term FDA-defined? What does the Nutrition Facts panel show? Does the ingredient list support the claim? These three checks take seconds and can prevent you from paying a premium for marketing language rather than genuine nutritional benefit.
For those looking to maximize nutrition on a limited budget, stretching nutritious ingredients across multiple meals offers practical, affordable strategies.
This article is for general informational and educational purposes only and does not constitute medical or nutritional advice. Consult a qualified healthcare professional or registered dietitian for guidance tailored to your individual health needs.
Health Editorial Team
Health Editorial Team is the collective byline for our editorial team and contributor network. Articles published under this byline or an editorial pen name are researched, written, and reviewed according to our editorial standards for clarity, consistency, and independence before publication.
View author profile