compared to 64% of residents in cities. This disparity between rural and city nutrition can be attributed to various factors; increased nutritional needs due to manual labour, more limited access to food as a result of poor infrastructure, high-susceptibility to the damaging effects of nature and the "Agricultural Productivity Gap". The Agricultural Productivity Gap postulates that "value added per worker" is often much lower within the agricultural sector than that found within non-agricultural sectors. Furthermore, allocation of labour within the agricultural sector is largely allocated ineffectively. Programmes targeting hunger USAID programmes focusing on nutrition operate within the Morogoro, Dodoma, Iringa, Mbeya, Manyara, Songwe and Zanzibar regions of Tanzania. These "Feed the Future" programmes heavily invest in nutrition, infrastructure, policy, capacity of institutions and agriculture which is identified by the organisation as a key area of economic growth in the country. A Tanzanian government led initiative "Kilimo Kwanza" or "Agriculture First" aims to encourage investment into agriculture within the private sector and hopes to improve agricultural processes and development within the country by seeking the knowledge of young people and the innovation that they can potentially provide. During the 1990s, around 25% of Tanzania's population were provided access to iodised oil aimed to target iodine deficiency within expecting mothers, as result of studies showing the negative effects of in-utero iodine deficiency on cognitive development in children. Research showed that children of mothers with access to the supplement achieved on average greater than a third of a year more education than those who did not. Programmes led by the World Food Programme operate within Tanzania. The Supplementary Feeding Programme (SFP) aims to target acute malnutrition by supplying blended food fortified with vitamins to pregnant women and mothers to children under 5 on a monthly basis. Pregnant women and mothers to children under 2 have access to the Mother and Child Health and Nutrition Programme's "Super Cereal" which is supplied with the intent of reducing stunting in children. World Food Programme supplementation remains the main food source for Tanzania's refugees. Super Cereal, Vegetable Oil, Pulses and Salt are supplied as part of the Protracted Relief and Recovery Operation to meet the average person's minimum daily caloric requirement of 2,100 kcal. UNICEF state that continued investment in nutrition within Tanzania is of the utmost importance: Estimates predict that Tanzania stands to lose $20 billion by 2025 if nutrition within the country remains at its