A growing body of evidence shows strong connections between poor sanitation and stunting, and provides a basis for this paper’s focus on achieving better nutrition outcomes from both the Water, Sanitation, and Hygiene (WASH) perspective and the nutrition perspective. The authors explain that while there has been a lot of interest in this topic, there are still not very many policies in place and there are several challenges of implementation that must be overcome to ensure that WASH investments and policies are nutrition-sensitive.
World Bank, February 2016