I would guess (based just on observing people in the New York subway) that around 20% of people, at least in the USA, do not have education/income/some other co

I would guess (based just on observing people in the New York subway) that around 20% of people, at least in the USA, do not have education/income/some other contributing factor to provide a healthy diet for their kids. And they themselves were likely even worse off as kids. Quick googling result: http://frac.org/initiatives/hunger-and-obesity/are-low-income-people-at-greater-risk-for-overweight-or-obesity/ http://frac.org/initiatives/hunger-and-obesity/are-low-incom...