HarvestPlus leads a global effort to develop and deploy micronutrient-rich staple food crops. The process used is known as biofortification, and it targets foods widely consumed by low-income families in Africa, Asia, and Latin America, which are often starchy staple food crops with little nutritional value. The focus is on providing sufficient levels of vitamin A, iron and /or zinc (three of four micronutrients identified by WHO as most essential) through these crops, based on normal diet patterns, to reduce malnutrition-related health problems. Over the last 15 years, HarvestPlus and its partners have demonstrated that: Breeding can increase nutrient levels enough to improve human nutrition without reducing yield. Extra nutrients in the crops can improve micronutrient status. Farmers are willing to grow biofortified crops and consumers to eat them. Biofortification is cost-effective.