I looked at the actual study. Explained this way I don't have a problem with it, but I'm a retired cardiac nurse. Food to the right is good and range of how good. Food to the left is bad and how bad. The stuff in the middle is OK. The colors are based on the main nutrients- Vitamins, minerals, fiber and protein, nutrient ratios, amount of fake and processed ingredients. Well, duh, deserts, salty snacks, cured meats, bread and animal fats are bad but who lives on potato chips and bacon sandwiches.? Occasional BLTs aren't going to kill us. To see it go here and click access article.
https://sites.tufts.edu/foodcompass/View attachment 23022