Why are rich people so slender while poor people are overweight?

you would think that rich people be fatter because they can afford to eat better and more food. But its the quite the opposite. whats the explanation?

its the same way how poor people have more kids than rich people. you would think that broke people wouldn't have as many kids because they can't afford them. right?

Why are rich people so slender while poor people are overweight?
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