Study finds that more nutritious pearl millet can meet full iron needs of children

Washington, D.C., August 12, 2013. A study just published in the, Journal of Nutrition shows that pearl millet bred to contain more iron can provide young children with their full daily iron needs.

Flickr (HarvestPlus)

Pearl millet is an important staple food in semi-arid regions of India and Africa, where iron deficiency is widespread. Lack of iron impairs mental development and increases fatigue. Severe anemia, often caused by iron deficiency, increases the risk of women dying in childbirth. These new varieties of pearl millet are being conventionally bred to provide more dietary iron to rural farming communities in arid drought-prone regions where few other crops thrive.

In the study, iron-deficient Indian children under the age of three who ate traditionally-prepared porridges (sheera, uppama) and flat bread (roti) made from iron-rich pearl millet flour absorbed substantially more iron than from ordinary pearl millet flour, enough to meet their physiological requirements. As an added bonus, this iron-rich pearl millet also contained more zinc, which was similarly absorbed in sufficient amounts meet the children’s full daily zinc needs. Lack of zinc in children can lead to stunting and impaired immune response against common infections.

 

According to Dr. Michael Hambidge, Pediatrics Professor Emeritus at the University of Colorado in Denver, who led the research team, the findings represent a promising development for public health. “In the areas where pearl millet is the main food staple, this study offers a serious, potentially important, strategy to battle malnutrition,” he says.

The principal investigator on the India research team, Dr. Bhalchandra Kodkany of Jawaharlal Nehru Medical College, an expert on maternal and child health and a practicing obstetrician and gynecologist, says that most of the pregnant women who go to his clinic have very low levels of iron in their blood. “We often see cases of severe anemia in women and school children in India because they mostly eat wheat and rice based foods which are very deficient in iron,” he notes. “So, these results are very welcome news for India.”

In another study, also just published in the Journal of Nutrition, marginally iron-deficient Beninese women who ate a traditionally prepared iron-rich pearl millet paste were found to absorb twice the amount of iron than paste made from ordinary pearl millet with lower iron content. The results indicate that less than 160 grams of iron-rich pearl millet flour daily is enough to provide Beninese women aged 18-45 with more than 70 percent of their daily iron needs. The equivalent amount of the ordinary pearl millet used in the study provided only 20 percent of their iron needs. Women, generally, have higher iron needs than children.

The research team in Benin was led by Dr. Richard Hurrell, who is a member of the Task Force on Food Fortification as well as the International Micronutrient Advisory Group at the World Health Organization. Dr. Hurrell is optimistic about the significance of the studies: “I do think that the evidence that has been generated for high-iron pearl millet is exciting, and is enough to support biofortification in general as a major strategy to combat micronutrient malnutrition. We now need to make further progress with the other major cereal grains and beans.”

Nutritionists have welcomed these new findings. “Globally, women and children are the two groups who suffer the most from mineral deficiencies,” explains Dr. Erick Boy, Head of Nutrition at HarvestPlus, a global program to improve nutrition. “Until now, we believed that cereal grains could not supply enough iron or zinc to meet the nutritional needs of these vulnerable groups. These findings, from two different parts of the world, have established that iron-rich pearl millet can be an excellent source of iron and even zinc, much more so than wheat and rice”

Iron-rich pearl millet is being developed using conventional breeding by theInternational Crops Research Institute for the Semi-Arid Tropics (ICRISAT) as part of the HarvestPlus program. The first iron-rich pearl millet variety (ICTP-8203Fe) was commercialized in 2012 in Maharashtra, India. It also provides more zinc, is high yielding and is disease and drought tolerant. Results from this study indicate that children could get their full daily iron needs from just 100 grams of this pearl millet flour. Children aged under two, who might eat less, would still benefit substantially from eating iron-rich pearl millet.

More than 30,000 Indian farmers have purchased and planted this new variety marketed as Dhanshakti (meaning prosperity and strength). Scientists are now developing more iron-rich pearl millet varieties that will have even higher levels of iron to be released in India.

Media Contacts

Vidushi Sinha, HarvestPlus (Washington, D.C.)
V.S.Vidushi@cgiar.org, +1 (202) 862-4686
Yassir Islam, HarvestPlus (Washington, D.C.)
y.islam@cgiar.org +1 (202)862-5602

Resources:

Journal Article References
Both articles are being made available as free open access by HarvestPlus.

Biofortification of Pearl Millet with Iron and Zinc in a Randomized Controlled Trial Increases Absorption of These Minerals above Physiologic Requirements in Young Children
The Journal of Nutrition, doi: 10.3945/jn.113.176677

Total Iron Absorption by Young Women from Iron-Biofortified Pearl Millet Composite Meals Is Double That from Regular Millet Meals but Less Than That from Post-Harvest Iron-Fortified Millet Meals
The Journal of Nutrition, doi: 10.3945/jn.113.176826

View or download pearl millet photos

Video on how iron pearl millet can help to fight against hidden hunger

More About Pearl Millet
Pearl millet is a hardy warm-season, dry land cereal grain crop. It is largely grown in the drought-prone regions of Africa and Asia where it performs better than other cereals. It originated in the Sahelian zone of Western Africa about 5000 years ago, and was introduced in India about 3,000 years ago, and in Southern and Eastern Africa about 2,000 years ago. It is an important staple food in drier regions of sub-Saharan Africa, especially in Nigeria, Niger, Mali and Burkina Faso. In India, about 45-50 million people in the states of Rajasthan, Maharashtra, Gujarat, Haryana and Uttar Pradesh among others rely upon pearl millet as a major source of their dietary energy. Its tolerance to drought, heat and soil salinity and its high water use efficiency makes it a climate-smart crop. In addition, given its high protein and mineral content (especially iron and zinc), high dietary fiber, gluten-free protein, the area under pearl millet cultivation is expected to increase in the future, including its adoption in non-traditional growing environments.

More About HarvestPlus
HarvestPlus leads a global effort to improve nutrition and public health by developing and disseminating staple food crops that are rich in vitamins and minerals. These are cassava, maize, and orange sweet potato that provide more vitamin A; beans and pearl millet that provide more iron; and rice and wheat that provide more zinc. We work with public and private sector partners in more than 40 countries. HarvestPlus is part of the CGIAR Research Program on Agriculture for Nutrition and Health. CGIAR is a global agriculture research partnership for a food secure future. Its science is carried out by its 15 research centers in collaboration with hundreds of partner organizations. The HarvestPlus program is coordinated by two of these centers – the International Center for Tropical Agriculture (CIAT) and the International Food Policy Research Institute (IFPRI).