As part of the work on implementing the project “Promoting healthy growth and preventing childhood stunting”, the World Health Organization has worked with various experts to prepare nine papers for a supplement of the Maternal and Child Nutrition Journal. The papers will contribute to ongoing reflections on multiple aspects of the challenges presented by a World Health Assembly 2012 target for stunting reduction and ways to address them.

This supplement is a contribution by WHO to countries’ efforts to meet the challenge of stunting and to reach the target of its reduction by 40% for 2025.