“[i]t is the various bugs that cause diarrhoea which are the biggest threat. Diarrhoea strikes children hard. It accounts for a sixth of infant deaths, and even in those it does not kill it prevents the absorption of food at a time when the brain is growing and developing rapidly.”
Diarrhoea (and other diseases), therefore, tend to lead to lower levels of cognitive development in young children. And diarrhoea is one preventable disease in Nepal.