"Imagine, for a moment, this scenario: a 200-meter footrace in which the starting blocks of some competitors are placed 75 meters behind the others. Barring an Olympic-caliber runner, those who started way in front will naturally win. Now, think of that as an analogy for the predicament that American kids born in poverty face through no fault of their own. They may be smart and diligent, their parents may do their best to care for them, but they begin life with a huge handicap. As a start, the nutrition of poor children will generally be inferior to that of other kids. No surprise there, but here’s what’s not common knowledge: A childhood nutritional deficit matters for years afterwards, possibly for life."