Ultra-processed foods NOVA
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Ultra-processed foods
Understanding Ultra-processed foods
- Please see the NOVA groups methodology: https://world.openfoodfacts.org/nova
- A very good lecture by Chris Van Tullekem (english)
- A very good lecture in French
Nova analysis is behaving weirdly in my country/my language !
- Our analysis is following the Scientific paper of Pr. Monteiro, and we use a list of Ultra-processing markers defined in the paper to trigger NOVA 4, we also use categories in some cases as a supplement (like for Sodas where the whole category is NOVA 4)
- As a result, issues might arise if the language is not well supported in Open Food Facts.
- we should start by easy wins, eg ensuring that the parser behaves to existing rules for Japanese (ie all the things listed at https://jp.openfoodfacts.org/nova) , then we can look for holes in our transcription of the paper.
- we should translate the additives at: https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/additives.txt (very impactful since additives determine the additives classes which are then used for NOVA classification)
- we should translate the additives classes mentionned in the methodology at: https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/additives_classes.txt (very impactful)
- we should translate the categories mentionned in the methodology at: https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/categories.txt
- we should translate the ingredients mentionned in the methodology at: https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/ingredients.txt (but very long, so do that for ingredients you stumble upon, or most popular ingredients)
- Ensure that https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/nova_groups.txt is translated to your language.
How can I help with having NOVA on more products ?
- Beyond the steps above, you can add more ingredient lists to products when they are missing
- Crop and extract ingredients on many products: https://hunger.openfoodfacts.org/ingredient-detection
- You can also spellcheck existing lists to correct them: https://hunger.openfoodfacts.org/ingredient-spellcheck
Feedback about the NOVA experience in the app
Feedback about the NOVA experience in the app: https://www.reddit.com/r/ultraprocessedfood/comments/1dt16a7/open_food_facts_app_not_particularly_helping_me/ We could probably improve the NOVA /Ultra processing onboarding, and also reply to the comments
Technical aspects - GitHub
- Open Food Facts wide tracking project for Ultra-processed foods and NOVA: https://github.com/orgs/openfoodfacts/projects/120
- The code is located at https://github.com/openfoodfacts/openfoodfacts-server/blob/main/lib/ProductOpener/Food.pm#L2718
Naming
NOVA is a bit geeky. Ultra-processed foods is better understood. Also, it's NOVA groups, not NOVA score. I also renamed âNOVAâ into âNOVA - Ultra-processed foodsâ. - Pierre
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