There is increasing medical evidence that suggests that high incidence of malnutrition is the direct result of poor sanitation and hygiene.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/malnutrition-traced-poor-sanitation
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-line-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/malnutrition
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sanitation
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rural-development
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/toilets
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rural-sanitation
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/open-defecation
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/orissa