N-UNCOUNT
If someone is suffering from undernourishment, they have poor health because they are not eating enough food or are eating the wrong kind of food. 营养不良
The underlying factors that cause food losses and waste are significantly different when comparing industrialised countries (where food waste and overeating is the bigger problem) and developing countries (where food losses and undernourishment are more extensive).
On the eve of the conference, the FAO and the Organization for Economic Cooperation and Development issued a joint report that warned that the urban poor in food-importing countries will require increased humanitarian aid to stave off hunger and undernourishment that can also lead to civil strife.