[jeffbee]

Not all sliced bread is "ultra-processed" in this paper. They say "Industrial breads made only from wheat flour, water, salt and yeast are processed foods, while those whose lists of ingredients also include emulsifiers or colours are ultraprocessed."

[Dylan16807]

...but colors seem like some of the ingredients least likely to turn a product unhealthy. With emulsifiers probably not far behind.

[maxk42]

Pure speculation here, but we may be overlooking some mechanical mechanism in the obesity epidemic: Could it be that simply consuming a larger percentage of foods containing ingredients made of powders and pastes which are easy to mass-produce is robbing our digestion process of some fundamental function that results in over-eating?

Perhaps the human stomach needs to take its time digesting whole foods and fibers in their natural form to produce feelings of satiety for longer periods of time?