Corrections to Our Writing
Written by hand when a guide was wrong, or when an error affected many products.
- November 2, 2026. California, federal definition and MAHA policy pages corrected against the law text and federal sources.
Product Data Updates
See something wrong? Tell us, whether you are a shopper or the company behind a product. We check the fact, and a real error gets fixed and logged here.
Our Corrections Policy
Almost everything on this site is computed from data, processing scores and nutrition scores are calculated from the ingredient lists and nutrition facts in the USDA FoodData Central database, across 445K+ products. That keeps our analysis consistent, but it also means a wrong score usually traces back to a data problem: a mislabeled product, an incomplete ingredient list, or a parsing error on our end.
When we find an error, or you point one out, we verify it against the source data, fix the underlying cause where we can, and refresh the affected pages. We do not quietly change scores to make a brand look better or worse. Corrections are logged on this page with a date.
What Counts as a Correction
Product Data Updates lists every submission a person approved that changed or confirmed what we hold for a product. Those entries are added on their own. Our database is also reprocessed regularly, and scores can shift as ingredient and nutrition data improve; those refreshes touch many products at once and are not listed one by one. We write an entry by hand in Corrections to Our Writing when:
- A factual claim in a guide or analysis was wrong and has been changed.
- A scoring or parsing error affected a category of products, not just one listing.
- A methodology change altered how scores are calculated.
How to Report an Error
If a product's score, ingredients, or nutrition data looks wrong, or you spot a mistake in a guide, tell us. The fastest way is our contact form (choose “Wrong data on a product or brand”), which routes straight to the person who maintains the data. Include the page URL and what you think is off, and we will look into it.
A note on scope: our scores describe processing and nutrition based on ingredient analysis, not health outcomes. A score you disagree with is not necessarily an error, but if the underlying data is wrong, we want to know.
Using the Ketzal App
You can also report a problem from Ketzal, our iPhone app. On a product's page, tap Disagree With This Score? or send up to three photos of its label. A product the app cannot find leads to the same photo steps. You need to be signed in to send photos. A person reviews every submission before it changes anything, and the app shows where each one stands.