"How Processed Food Makes Us Fat"
"The very first randomized controlled trial of ultra-processed food is here. Kevin Hall, a researcher at the National Institutes of Health, brought subjects into the lab for four weeks and fed them one of two diets: ultra-processed or minimally processed, designed to have the same combination of carbs, fat and protein. The ultra-processed menus included store-bought mac and cheese, chicken nuggets, canned ravioli and frozen pancakes, while on the minimally processed side there was pasta with shrimp, salad with grilled chicken and grains, and oatmeal with nuts and bananas. Subjects were told to eat as much as they wanted. (Each subject spent two weeks on each diet.)
The result was that, when they ate ultra-processed food, they consumed 500 more calories per day. Five hundred! They also gained a couple of pounds. Notably, though, subjects rated the meals as equally good-tasting."