营养失调

例句：

1. 1. The child was suffering from malnutrition due to poor diet.
   这个孩子由于饮食不良而患有营养不良。
2. 2. Malnutrition can lead to serious health problems if left untreated.
   如果不治疗，营养不良可能会导致严重的健康问题。
3. 3. To prevent malnutrition, it's important to ensure a balanced and nutritious diet.
   为了预防营养不良，重要的是确保饮食均衡且营养丰富。