Abstract

Background: Overnutrition, undernutrition, and micronutrient deficiency present a major global public health challenge due to food insecurity. Micronutrient deficiencies are prevalent among children and result in impaired intellectual growth. Policy guidelines at the national level are essential for the success of micronutrient supplementation programs for children during school feeding. Aim: This study aims to analyze how various national policies guiding the school meal programs—such as those related to school feeding, nutrition, health, food safety, agriculture, and the private sector—associate with the implementation of in-school micronutrient supplementation among countries with school meals programs. Methods: The Bayesian Mindsponge Framework, combining the reasoning strengths of Mindsponge Theory and inference advantages of Bayesian analysis, was employed on a dataset of 126 government representatives who manage large-scale school meal programs in 126 different countries. Results: Findings showed that school feeding policies were positively associated with in-school micronutrient supplementation, while nutrition policy had a negative association with these practices. Both associations were only moderately reliable. Policies on health, food safety, agriculture, and the private sector had ambiguous relationships with micronutrient supplementation among countries implementing school meal programs. Conclusions: Findings highlight the evidence of school feeding policy’s positive association with micronutrient supplementation in school meal programs, indicating effective policy guidance on these practices. There is a need to re-assess the implemented nutrition policy due to its negative association with these practices. Enhancing and strengthening the national policies on health, food safety, agriculture, and the private sector may increase their potencies in supporting in-school micronutrient supplementation among countries implementing school meal programs.