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Reducing Mineral and Vitamin Deficiencies through Biofortification: Progress Under HarvestPlus.

Fundamentally, the prevalence of mineral and vitamin deficiencies is high in developing countries due to the fact that agricultural systems do not produce sufficient foods rich in minerals and vitamins. Biofortification involves breeding staple food crops to increase their micronutrient content, targeting staple foods widely consumed by low-income families globally. In so doing, biofortification contributes to solving the underlying problem of mineral and vitamin deficiencies by increasing the amount of iron, zinc, and provitamin A produced by food systems. When HarvestPlus first started in 2003, there was much doubt among a range of stakeholders, that biofortification would work. First, we had to prove to the plant science community that higher target levels iron, zinc, and provitamin A could be bred into high-yielding, profitable varieties. Presently, over 150 varieties of 12 biofortified crops have passed the agronomic tests of varietal release committees in 30 developing countries. In 3-5 years, biofortified varieties will be available to farmers and consumers in an additional 25 countries. The nutrition community initially questioned the efficacy of biofortified crops - would the levels of retained nutrients and absorption be high enough? HarvestPlus has commissioned 15 efficacy trials, all undertaken in developing countries. While 5 of these studies are still in process, there is already sufficient positive published evidence for iron and provitamin A. Can adoption of biofortified crops by farmers be scaled up, and a public health impact demonstrated? HarvestPlus estimates that 20 million farmers and consumers presently grow and consume biofortified crops in 8 target countries. The final and major challenge is to mainstream biofortification into the fabric of "business-as-usual" of a range of organizations - public and private agricultural research, institutions that focus on bringing improved agricultural technologies to farmers including multi-lateral lending institutions, private companies, non-governmental organizations, and the policies and programs of national governments, regional organizations, and UN agencies.