Income ties directly to malnourishment
http://www.adbi.org/discussion-paper/2005/01/14/869.malnutrition.poverty.indonesia/malnutrition.and.poverty/
"Increasing GNP per capita from $300 to $600 isassociated with a decline in the prevalence of underweight children from about 34% to 17%or a reduction of about 50%"