Have you been in a US supermarket? It's absolutely nuts and I don't think many Americans realise it.
To be bombarded with monumentally huge portions of everything is just a recipe for...well....the situation the US is in. Theres not many other countries that have whole food groups focused on cramming in as much peanut butter, jelly, marshmallow, chocolate, or whatever other high fructose corn syrup crap is being used.
Massive slices of cake prepackaged and ready to eat? Yeah why not. 50 different coffee syrup flavors? Yeah go for it. How about a lovely massive bottle of sugary drink to wash it down? Just one? No no have a crate of 20 of the things.
Just for a comparison, look up candy on the Walmart site. Now do it on Tesco UK. Next, try the bakery, or hell even the meat isle, somehow the exact same product ends up being significantly worse for you in the US.