It is also worth saying that undernutrition may not have spiked , the world still faces a big problem of poor nutrition ( lack of micro-nutrients , as opposed to lack of calories ) .
But the majority of the world 's poor majority are farmers , paarlberg argues , so it is " a dangerous error " to separate food production from undernutrition .
Undernutrition can result from inadequate intake ; malabsorption ; abnormal systemic loss of nutrients due to diarrhea , hemorrhage , renal failure , or excessive sweating ; infection ; or addiction to drugs .
营养低下可由摄入不足、吸收不良、腹泻、出血、肾衰或过度出汗而至营养素丢失、感染和吸毒等引起。
After age two , the negative effects of undernutrition are largely irreversible .
两岁以后,营养不良造成的副作用将是不可逆转的了。
Evaluation of preoperative undernutrition , nutritional risks , and nutritional support in general surgical wards .
普外科患者术前营养不足、营养风险及营养支持状况分析。
Undernutrition increases the risk of upper respiratory tract infections and subsequent acute bronchitis , especially in children and older people .
营养不良增加上呼吸道感染的风险从而发生急性支气管炎,特别是儿童和老人。
The risk of undernutrition is also greater at certain times in a person 's life , ie , infancy , early childhood , adolescence , pregnancy and lactation , and old age .