This review study evaluated the effectiveness of fortified blended foods (FBFs) on improving the nutrition and health status of children and infants with moderate malnutrition, or who are at risk of undernutrition in developing countries. FBFs have been previously used in humanitarian relief programs but their effectiveness needs to be evaluated more rigorously.  Eleven studies were reviewed that took place in 8 different countries.  The studies included in this review compared a FBFs group to a corn soy blend (CSB) control group. This review found an average 76% recovery from moderate acute malnutrition (weight-for-height Z-score (WHZ) <-2) in subjects on CSB. Positive outcomes were seen in subjects using FBFs as food aid supplements but moderate acute malnutrition subjects on RUTF had higher rates of recovery.  The limited research that has been completed has found inconclusive findings so currently no causal relationship can be established.  Several constraints and regulations such as national budget, producers' profits, and food production are major factors that affect FBFs.  Overall, the review did not find definite conclusions and more research is desired on FBFs to come to a position where economic, social, and political factors are all taken into consideration.