That isn't most, and I mentioned synthetic chemicals & preservatives.
The reasons why Twinkies are so shelf stable are largely the same reasons why flour or rice or olive oil is shelf stable.
Better be careful of those chemicals like sodium chloride and dihydrogen monoxide.
I.e. nobody knows what “processed” means, they just know it’s bad somehow.
(Re-post of <https://news.ycombinator.com/item?id=27397900>)
Sure, if you are assuming Americans are mostly eating these things daily.
Sugar, Water, Enriched Flour, High Fructose Corn Syrup (sugar), Tallow (animal fat/oil), Dextrose (sugar, from the HFCS), Egg
Twinkies are >98% sugar, flower, oil, with a little bit of egg.
You could substitute the tallow with other similar kinds of oils if you wanted, like say coconut oil.