Basically it's all about Calories and Americans have added 25% to their caloric intake since 1961 when it started increasing.
Its also not really magical, they didn't just add sugar, they added meat, sugar, grains and oil (replacing butter mostly) - all together it adds up to 720 kcal extra per day per capita.
Koreans eat about 1500 kcal less per day (they are also quite a bit smaller on average so it's not 1 ot 1 of course.) Japanese eat even less (like 200 kcal less) but are also even a bit smaller on average. Both countries happily eat terrible food just as much as Americans do these days, they just eat a lot less food in total.
There's an idea that American eat out more and that the calories at dining establishments about increased about 35%.
Its also not really magical, they didn't just add sugar, they added meat, sugar, grains and oil (replacing butter mostly) - all together it adds up to 720 kcal extra per day per capita.
Koreans eat about 1500 kcal less per day (they are also quite a bit smaller on average so it's not 1 ot 1 of course.) Japanese eat even less (like 200 kcal less) but are also even a bit smaller on average. Both countries happily eat terrible food just as much as Americans do these days, they just eat a lot less food in total.
There's an idea that American eat out more and that the calories at dining establishments about increased about 35%.