[quwert95]

Just expanding on your idea here - Japan also has a million times more vending machines as the US and they're full of Pepsi/Coke products, fruit juices, energy drinks, and even ice cream or beer. At 2am you can get your carb fix across the street from your apartment for a measly 100yen.

[adrianratnapala]

I have often wondered whether nations full of the descendants of rice-farming peasants are genetically better at dealing with carbs than those descended from northern Europeans.

[princeb]

Are there no carbs in Europe? Wheat, barley, corn, rye?

[adrianratnapala]

These reasons are why it is only speculation. And also why I concentrated on Northern Europe, where agriculture is more recent and meat was always a larger part of the diet even in the agricultural age.