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Processed foods usually refers to packaged snacks, food with lots of added ingredients, corn oils, artificial ingredients, etc or fast food/junk food ordered at restaurants/fast-casual places.


There is a classification system for how processed foods are:

https://en.wikipedia.org/wiki/Nova_classification

Under that classification, boiling potatoes counts as processing them.

Something as minor as rinsing fruit in tap water can count as processing - it could affect the lifespan of the fruit or its nutritional content.

Of course, that isn't the only definition out there.


I think most people are referring to the “Ultra-processed” category when they talk about processed foods in a health context.




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