I assume when people talk about “ultra-processed” they’re talking about foods which 90% would agree are bad for you: foods with a lot of added sugar or oil, or almost everything else taken out. e.g. candy, fried foods, chips, pizza on white bread, fruit juice.
Is pasta ultra-processed? What about salami? Mashed potatoes? Cheese? Honestly, no. Actually, high-calorie foods like cheese or wheat pasta are very nutritious. Of course a diet consisting of pasta, salami, and cheese with a side of mashed potatoes is probably bad. But it’s better than the above.
I wonder whether kids are really getting fat off of even hot dogs, mac and cheese, steak and cheese subs, and corn. Or if it’s the added sugar and refined carbs - candy, soda, white bread, “snacks”. People say that kids’ diet in the 60s was the former, and they were fine.
Honestly “ultra-processed” can be misleading because it isn’t the processing which is bad, it’s the amount of fat and carbs vs. protein, fiber, water, and other nutrients. Maybe we could call it “junk” food but that’s even more ambiguous.