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USDA food database explained

The USDA food database — officially USDA FoodData Central — is the U.S. government’s reference dataset for nutrients in foods. Marco matches the meals you text to FoodData Central and published brand or restaurant facts so logged calories and macros are grounded in real sources, not invented chatbot numbers.

What FoodData Central is

FoodData Central combines several USDA datasets: foundation foods, SR legacy entries, and branded foods with label nutrients. Researchers, clinicians, and consumer apps use it as a shared baseline for calories, protein, carbs, fat, and more.

Why trackers care

Without a reference database, every “AI calorie” answer is a guess. Matching to FoodData Central (and published restaurant or brand panels) keeps logs comparable day to day and honest when a food cannot be found.

  • Shared nutrient definitions across foods
  • Branded label data for many packaged items
  • A basis for clarifying questions instead of silent invention

How Marco uses it

You never browse FoodData Central yourself. You text a meal; Marco searches and matches, then logs the result and replies with calories and macros. Restaurant chains and brands are layered in when published facts exist.

Limits worth knowing

No database covers every homemade recipe perfectly. Portion honesty still matters. When your description is vague, Marco asks — because a wrong confident match is worse than a 10-second clarification.

Frequently asked questions

What is the USDA food database called?

The modern public product is USDA FoodData Central. It replaces older standalone SR releases as the primary consumer-facing nutrient reference.

Does Marco use USDA data?

Yes. Marco matches meals to FoodData Central and published brand or restaurant nutrition facts rather than inventing calorie counts.

Is USDA data free to use?

FoodData Central is a public USDA resource. Apps and researchers use it as a reference; Marco’s product is the text logging experience on top of that matching.

Ready to track by text?

Join the waitlist for early access. No app to download — once you’re in, you text Marco from the messaging app you already use.