The first 1,000 days: their impact on a child's future, narrated by Jay Rayner – video

Good nutrition, healthcare and sanitation are crucial to a child’s early development. Without these, a child’s brain won’t develop properly. They will have a lower IQ and they will grow up shorter than they should, a condition known as stunting. The Observer’s food critic, Jay Rayner, explains how a child’s future is determined by the first years of life