This review found that the majority of studies on nutrition interventions in these settings and populations were of moderate quality, and that these were largely confined to African settings. Further high quality studies are required in humanitarian crises given their unique contexts, particularly in other regions of the world than Africa, in order to be able to demonstrate a significant improvement in health outcomes as a result of nutritional interventions in settings and populations. There is substantial evidence on the effectiveness of nutrition interventions in stable and development contexts. Reviews of such studies are available on malnutrition, vitamin deficiencies – primarily anaemia – as well as general effects on standard anthropometric indicators.
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