The study will take place in Kaligong sub-district in Bangladesh. All villages in Kaligonj sub-district consist of plain agricultural land. Subsistence farming is the major source of livelihood. Rice is the commonly eaten staple mixed with lentil and vegetable curry and occasionally with pieces of fish and meat. Similar to the rest of the plain areas of the country, malnutrition among women and children is widespread, but malaria is extremely uncommon and the prevalence of hookworm is fairly low (less than 2%%).