Very interesting, especially the much more detailed studies available on the same website, for example the one from the Philippines mentioned in the document above:
document.linknca.com//30/30/supports/233...sbate_final_2015.pdf

This year, World Toilet Day is focusing on the link between sanitation and nutrition – drawing the
world’s attention to the importance of toilets in supporting better nutrition and improved health. Lack of
access to clean drinking water and sanitation, along with the absence of good hygiene practices, are
among the underlying causes of poor nutrition.
The Link NCA Technical Unit has selected findings from two recent nutrition causal analysis studies
where WaSH factors were identified as critical for poor nutrition.

The Link NCA technical Unit in ACF Paris show some concrete examples between WASH factors and undernutrition from two NCA studies conducted in Ethiopia and the Philippines:

document.linknca.com/30/30/documents/cat.../link_nca_-_wash.pdf

Enjoy your reading!