n.营养不良

Malnutrition includes undernutrition, in which nutrients are undersupplied, and overnutrition, in which nutrients are oversupplied. 营养不良包括营养低下，即营养素供给不足，和营养过剩，即营养素供给过度。

The key to early detection is awareness that persons in certain circumstances have a high risk of undernutrition or overnutrition. 早期发现的关键是要认识到，有些人是营养低下或营养过剩的高危人群。

Malnutrition (undernutrition and overnutrition) develops in stages which usually require considerable time. 营养不良(营养低下和营养过剩)的发展是有阶段的，通常需要相称长的时间。

Results In 9 provinces of China, 6.9% of all households were found to have undernutrition and overweight members within the same household. 结果中国九省家庭中有6.

Animal studies show that both maternal undernutrition and overnutrition reduce placentalfetal blood flows and stunt fetal growth. 动物学的研究表明：母体营养不足或过剩均能使胎盘血流减小并妨碍胎儿生长。