This study aimed to assess the effect of a 3-month distribution of RUTF in the context of a preventative supplementary feeding program. The primary hypotheses were that short-term RUTF supplementation at the village-level would prevent declines in weight-for-height and reduce the incidence of wasting in children 6 to 60 mo of age over a period of 8 mo. Because RUTF may have additional health effects, the intervention effect on height-for-age, stunting, mortality and morbidity from malaria, diarrhea, and respiratory infection were also examined.