Leonard W R
School of Human Biology, University of Guelph, Ontario, Canada.
Soc Sci Med. 1991;33(10):1127-33. doi: 10.1016/0277-9536(91)90228-5.
Although it has been widely argued that children are most severely affected during periods of food scarcity, there is little quantitative data to support this claim. The present study uses dietary intake and anthropometric data from the Andean community of Nuñoa, Peru to evaluate age-related differences in the impact of and responses to seasonal variation in food availability. Children ages 12 years and under experience smaller seasonal fluctuations in energy intake and have a more adequate pre-harvest diet than adults. Anthropometric measures (weight-for-age and skinfold thicknesses) also indicate better nutritional status in children. Protection of children against severe pre-harvest stress is important because (1) they are more vulnerable to nutritional deprivation and (2) they make substantial contributions to household production. Gender differences, however, are not apparent as nutritional adequacy is comparable in males and females. Protection of children against nutritional stress represents just one of a suite of adaptive responses to limited pre-harvest food availability exhibited within this population.
尽管人们普遍认为儿童在食物短缺时期受到的影响最为严重,但几乎没有定量数据支持这一说法。本研究利用来自秘鲁努尼奥亚安第斯社区的饮食摄入量和人体测量数据,评估食物供应季节性变化的影响以及对其反应方面与年龄相关的差异。12岁及以下的儿童能量摄入量的季节性波动较小,且收获前的饮食比成年人更充足。人体测量指标(年龄别体重和皮褶厚度)也表明儿童的营养状况更好。保护儿童免受收获前的严重压力很重要,原因如下:(1)他们更容易受到营养剥夺的影响;(2)他们对家庭生产做出了重大贡献。然而,由于男性和女性的营养充足程度相当,性别差异并不明显。保护儿童免受营养压力只是该人群对收获前食物供应有限所表现出的一系列适应性反应之一。