>>715342298
It's a difference in diet, yes it's that important.
In Asia overweight is almost non existent and children eat lots of veggies and actually freshly cooked food and not frozen garbage.
Let's take Japan for example were a law mandated that elementary school children cafeterias have to cook fresh meals, or how Asia in general has a big and cheap street food culture, you want a good cheap meal? Go down the street and get one for 5 bucks.
You can observe a similar phenomenon in Italy and Spain.