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Iron study combats anaemia with cutting-edge computer simulation
4 August 2020
A new iron intervention study has determined which of the world’s low-and-middle income countries would benefit from using iron-containing micronutrient powders to tackle childhood anaemia.
study assessing which countries would benefits from using
iron-containing micronutrient powders to tackle childhood anaemia.
Using advanced computer simulation techniques, the study’s findings include individual reports for 78 countries – predominantly in Africa, Asia and Latin America – showing where the use of micronutrient powders would offer a net benefit, and where the intervention could cause more harm than good.
This is vital information for governments aiming to efficiently and cost-effectively reduce the burden of anaemia in their countries.
Published in Lancet Global Health, the research was led by Walter and Eliza Hall Institute researcher Associate Professor Sant-Rayn Pasricha, who is also a haematologist at The Royal Melbourne Hospital. It involved an international consortium of experts from Queensland University of Technology, Imperial College London, and Emory University, the Centre for Disease Control and University of Pennsylvania in the US.
At a glance
- It has long been global health policy to deliver iron-containing micronutrient powders to control anaemia in children, however, there is also data that the intervention exacerbates the risk of diarrhoea and malaria.
- A new study has used sophisticated computer modelling to reveal that 54 out of 78 countries benefit from using micronutrient powders to combat anaemia. And that in 24 countries, the use of micronutrient powders causes more harm than good.
- The study’s findings include 78 individual reports that are readily available to inform country-specific policies that reduce the burden of anaemia in low-and-middle income countries.
Combatting iron deficiency
which is contained in red blood cells and carries
oxygen around the body. Image from Haemoglobin and
Sickle Cell Anaemia WEHI.TV animation.
Dietary iron deficiency is considered the major cause of anaemia in children worldwide and iron-containing micronutrient powders, that can be mixed into food, are currently the main intervention recommended by the World Health Organization for combatting the widespread problem.
However, because iron is essential for certain pathogenic micro-organisms to thrive, there is data that the use of micronutrient powders may exacerbate the risk of diarrhoea and malaria in children, potentially causing more net harm than good.
Dr Pasricha said the international research team set out to answer the question of whether micronutrient powders offered a net overall benefit on health outcomes in children when the associated risks from infection were taken into account.
“In 54 of the 78 countries analysed, we saw a net benefit in the use of micronutrient powders to combat childhood anaemia in. In the remaining 24 countries, however, we found the use of micronutrient powders may actually cause a net harm.”
Advanced computing
The findings point to the importance of not taking a blanket approach. The reports produced for each of the 78 different countries provide policymakers with accurate, actionable information that balances the expected benefits on anaemia reduction against possible risks of infection.
Associate Professor Pasricha said the study would not have been possible without advanced computing and the expertise of a multidisciplinary team including mathematicians, health economists, paediatricians and nutrition experts.
“It was an amazing team that came together to make this research possible. It was also really exciting to harness the power of cutting-edge computer simulation to make sense of data sets so large they would have taken more than 15,000 years to manually assess.
Through a comprehensive microsimulation analysis, the researchers were able to integrate huge amounts of data from each country on anaemia, malaria and diarrhoea, as well as health care and public health information. This enabled them to simulate potential outcomes for five million children per country and determine the net health benefit (or harm) and cost-effectiveness of using micronutrient powders in different settings from Mongolia to Madagascar.
We’re incredibly proud of the resulting reports from this world-first study, said Associate Professor Pasricha.
“Our hope is that the reports are readily accessed and put to good use by leaders, policymakers and donors the world over to help countries save time, money and most importantly, lives in the fight against anaemia,” he said.
The research was funded by the International Union of Nutrition Sciences.
Media inquiries
M: +61 475 751 811
E: communityrelations@wehi.edu.au
Super Content:
Institute researchers have launched one of the largest international efforts to prevent and treat maternal anaemia in developing countries.
The study will also investigate the impacts of iron deficiency on the developing infant brain.
Animation explaining how DNA changes lead to the blood disease sickle cell anaemia
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