[stinkbeetle]

I don't think a large proportion of thin people are thin because of societal pressure. And conversely I don't think societal pressure makes many people thin, because I hear so much complaints about body shaming and unrealistic beauty expectations and discrimination against obesity etc, so it clearly isn't working any miracles.

I think most people who are thin just have a food intake regulation that is pretty well balanced so they don't over eat because they don't feel that hungry when they have had enough calories.

The reason why some groups of people have been increasingly prone to obesity is external factors interfering with that regulation. It's probably lots of things, food availability, ingredients, cost, culture, other mental health issues, medications, entertainment, work, availability of cars. One thing it is not is simple.

The calories in vs calories out mechanic is simple, the reasons why that's going out of kilter is not.

[throwawaymb]

Asians dont consume the same amounts of sugars. its that simple. they also tend to exercise more.

[jjcob]

Rice syrup + corn syrup are used in pretty much every savory dish, subway stations often have a bakery that sells sweet pastries (filled with bean paste), Starbucks style coffee drinks are also popular, people snack dried octopus (loaded with salt + sugar)...

I loved the food, but it was not at all what anyone would consider healthy.

(Instant Ramen are also extremely popular, industrially produced fried noodles with way too much saturated fats + sodium)

[stinkbeetle]

It's total calories, not just calories from sugar. And I already said that part of it was simple, remember? It's in the post you're replying to!

The question is why they have better balanced calorie intake. It's certainly not lack of sugar availability.