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Background: The relationship between overweight and under-nutrition, particularly in resource-poor settings, poses practical challenges for targeting nutrition interventions. Current anthropometric indicators including weight for length (WLZ) recommended by the WHO may be challenging in community settings. Objectives: The aim of this study was to assess whether MUAC can accurately identify children aged younger than two years with overweight and obesity. Method: A descriptive, cross-sectional study was used to collect data from a non-probability sample of 397 young South African children from October 2015 to February 2016. MUAC cut-off values were tested using a receiver operating characteristic and area under the curve (AUC). Results: The prevalence of overweight (WLZ > +2) and obesity (WLZ > +3) was 11% (n = 44) and 5% (21) respectively. A MUAC cut-off value for identifying male children 6 to 24 months old with overweight was determined at 16.5 cm (85% sensitivity, 71.4% specificity, AUC = 0.821) and female children at 16.5 cm (100% sensitivity, 76.6% specificity, AUC = 0.938). Conclusions: MUAC may be an appropriate tool for identifying children younger than two years old with overweight and obesity. The predicted MUAC cut-off values were able to identify infants and young children with overweight accurately. [ABSTRACT FROM AUTHOR]

Objective: To describe catch-up growth in children with moderate acute malnutrition (MAM) on targeted supplementation using Ready-to-Use Supplementary Food (RUSF). Methods: An impact study was done to determine anthropometric changes in children aged 12-60 months who received RUSF (175 kcal/kg/day) for six weeks, managed as outpatients and followed up for 12 weeks until a final assessment. Results: Default rates were high, with 30% of children returning to the primary healthcare facility for follow-up only once or twice. Despite significant improvement in height-for-age Z-score (HAZ), weight-for-age Z-score (WAZ), weight-for-height Z-score (WHZ) and mid-upper arm circumference (MUAC), 70.5% of the sample remained in the same malnutrition classification and only 26% recovered. The growth velocity of children with a lower initial WHZ was significantly higher (r = -0.15, p < 0.05) than those with less wasting, but only 20% grew at a rate to achieve catch-up growth. The mean growth velocity decreased as the intervention period continued. Conclusion: All median anthropometric indicators improved with RUSF supplementation. However, catch-up growth or recovery occurred in only 20-25% of children included in the study. These findings create questions about the value of supplementation in the absence of blanket food distribution or other interventions to address food security. [ABSTRACT FROM AUTHOR]