Worldwide, one in four children under the age of five is stunted, meaning that chronic under-nutrition has caused serious and often irreversible physical and cognitive damage. There were 165 million stunted children in 2001, equivalent to half the population of the United States.
全世界，每四名五岁以下儿童就有一人发育不良，这表明长期营养不良造成了常常是不可逆转的生理和认知伤害。2001年有1.65亿儿童发育不良，等于美国人口总数的一半。