This article summarizes findings from 10 studies to assess the impact of preventative nutrition interventions on the health and nutrition of 10-19 year-olds in low- and middle-income countries. Although the authors aimed to assess the impact of calcium/vitamin D supplementation/fortification, iron supplementation with or without folic acid, zinc supplementation, and multiple-micronutrient fortification, they did not find enough evidence to draw conclusive implications for practice. The article instead suggests that further studies should be conducted surrounding nutrition education and counseling and macronutrient supplementation.