Skip to content

Structure/Function Claims on Food Labels, With Examples

Structure/function claims for food makers: what they are, why food claims come from nutritive value, disease claims to avoid, supplements, a checker.

By Koa Sterling. Product specialist at TaroStack and small business owner. Yes, I am a real human, and I actually sit in front of a computer and write these articles. Reviewed October 19, 2026 · 5 min read

A structure/function claim describes how a nutrient affects the body's normal structure or function: FDA's own example is "calcium builds strong bones", and "fiber maintains bowel regularity" is another. On a conventional food, the claim has to come from the food's nutritive value, the protein, fiber, vitamins or minerals actually in it, and it must be truthful and not misleading. FDA doesn't pre-approve these claims, and a food maker doesn't notify FDA or print a disclaimer; those are rules for dietary supplements, which notify within 30 days and print that FDA hasn't evaluated the claim. The line not to cross is a disease claim: anything saying the food treats, cures, prevents or eases a disease or its symptoms makes it a drug. Claims tying a nutrient to reducing the risk of a disease are health claims, a separate category FDA authorizes one by one. In the example below, a Utah granola maker sorts its new bag copy.

The short version

  • Structure/function: a nutrient's role in the body's normal structure or function.
  • On food, the claim must come from nutritive value.
  • No FDA notice or disclaimer for conventional foods.
  • Supplements notify FDA within 30 days and print a disclaimer.
  • Disease claims make a food a drug: don't make them.
  • Risk-reduction claims are health claims, authorized by FDA.
  • TaroStack keeps each recipe by weight, so what's in the bag is on record. More below.

Three kinds of claim

Kind Example On a food
Structure/function "Protein helps build muscle"; "fiber supports regularity" Allowed if it comes from nutritive value and is true; no notice or disclaimer
Health claim "Diets with enough calcium may reduce the risk of osteoporosis" Only as FDA has authorized, with its conditions
Disease claim "Lowers blood pressure"; "fights colds" Not allowed: it makes the food a drug

Authorized health claims are in health claims on food labels, and the "healthy" claim in healthy claim fda.

The rules

Rule Where
What it is A nutrient's role in the normal structure or function of the body; on conventional foods, from nutritive value; no notification or disclaimer for conventional foods (FDA, Structure/Function Claims)
Supplements Notify FDA within 30 days of marketing; the disclaimer that FDA hasn't evaluated the statement and the product isn't intended to diagnose, treat, cure or prevent any disease (21 CFR 101.93)
Disease claims A statement that the product affects a specific disease or its characteristic signs or symptoms (101.93(g))
Health claims A substance's relationship to a disease or health-related condition; only as FDA authorizes (21 CFR 101.14)

This is general information, not legal advice.

An example: new bag copy

Cache Valley Granola Co., the made-up granola maker in Logan, Utah, I use in these examples, drafted copy for a new protein granola with 12 grams of protein and 5 grams of fiber in a serving, and checked each line:

Draft line Kind Kept?
"Protein to help build and repair muscle" Structure/function, from the 12 g of protein Kept
"Fiber for digestive regularity" Structure/function, from the 5 g of fiber Kept
"Iron helps carry oxygen in the blood" Structure/function, but the iron is low Cut: too little iron to be truthful
"Lowers cholesterol" Disease claim Cut
"Boosts immunity through cold and flu season" Disease claim, by naming colds and flu Cut
"May reduce the risk of heart disease" Health claim Cut unless it meets an authorized claim's conditions

The iron line was true of iron in general but not of this granola, which has too little to claim anything about it, in good source of iron. The heart line would need one of FDA's authorized health claims, with its wording and conditions, so it came off the draft. No disclaimer went on the bag: it's a food, not a supplement.

Get the checker

Download the structure/function claim checker. One sheet: each draft claim, whether it names a disease or its symptoms, whether the effect comes from a nutrient in the food, whether it's about reducing disease risk, and whether the product is a supplement; what kind of claim it is and what to do fill in. It's an ordinary Excel file with no macros, and it works in Google Sheets, LibreOffice and Numbers.

Where this stops working

The checker sorts the words. Whether the bag really has 12 grams of protein depends on the recipe the batch followed, and a recipe change can make a true claim false.

How TaroStack does it

TaroStack keeps each recipe by weight, so the ingredients behind a protein claim are on record for every batch.

Recipes by weight. The protein granola is a recipe by weight: oats, protein crisps, almonds, honey.

Batches from the recipe. Each batch records the recipe it followed and the ingredient lots it used.

Recalls. If a batch went out with the wrong label, one report shows every customer who got it.

The job Notebook In TaroStack
Which recipe a batch followed Remembered Each batch from its recipe
The protein crisps in a batch Not recorded Batches by lot
Who got a mislabeled batch Invoices One recall report

Recipes, batches and recalls are on every plan, from $49 a month. The first 30 days are free, with no credit card. If you'd like a hand setting up, ask, and we'll do it with you.

Questions people also ask

What is a structure/function claim?

A statement about how a nutrient affects the body's normal structure or function, such as "calcium builds strong bones."

What is the difference between a structure/function claim and a health claim?

A structure/function claim is about normal body function; a health claim ties a substance to a disease or its risk, and FDA must authorize it.

Do structure/function claims on food need a disclaimer?

No: the disclaimer and FDA notice are for dietary supplements; conventional foods need neither.

Can a food label say it prevents disease?

No: a claim to treat, cure or prevent a disease makes it a drug; risk-reduction wording is allowed only as an authorized health claim.

Sources

  1. FDA, Structure/Function Claims: such claims describe a nutrient's role in the normal structure or function of the body, such as calcium builds strong bones; for conventional foods they focus on effects derived from nutritive value; FDA doesn't require notification or a disclaimer for conventional foods; dietary supplements notify FDA within 30 days and carry a disclaimer · read October 19, 2026
  2. 21 CFR 101.93(c) and (g): the dietary supplement disclaimer text, and what makes a statement a disease claim, including an effect on a specific disease or its characteristic signs or symptoms · read October 19, 2026
  3. 21 CFR 101.14: a health claim characterizes the relationship of a substance to a disease or health-related condition and is allowed only as FDA authorizes · read October 19, 2026

We use AI to help with the research for these articles. Every one is read, checked against its sources and edited by Koa before it's published. Spot a mistake? Tell us and we'll fix it and say so. How we write these.

Let’s get your stack in order.

Get TaroStack

Sign up now for your free 30 day trial. No credit card required.