A5064377979- Selenium in Biological Systems
- Plant Micronutrient Interactions and Effects
- Trace Elements in Health
- Child Nutrition and Water Access
- Iron Metabolism and Disorders
- Heavy Metal Exposure and Toxicity
- Soil and Land Suitability Analysis
- Phytase and its Applications
- Birth, Development, and Health
- Agricultural Science and Fertilization
- Heavy metals in environment
- Nutritional Studies and Diet
- Thyroid Disorders and Treatments
- Economic and Environmental Valuation
- Food Security and Health in Diverse Populations
- Banana Cultivation and Research
- Cassava research and cyanide
- Geochemistry and Geologic Mapping
- Soil Carbon and Nitrogen Dynamics
- Folate and B Vitamins Research
- Animal Diversity and Health Studies
- Hemoglobinopathies and Related Disorders
- Mercury impact and mitigation studies
- Pregnancy and preeclampsia studies
- Agriculture Sustainability and Environmental Impact
Addis Ababa University
2016-2025
ORCID
2021
Abstract Micronutrient deficiencies (MNDs) remain widespread among people in sub-Saharan Africa 1–5 , where access to sufficient food from plant and animal sources that is rich micronutrients (vitamins minerals) limited due socioeconomic geographical reasons 4–6 . Here we report the micronutrient composition (calcium, iron, selenium zinc) of staple cereal grains for most production areas Ethiopia Malawi. We show there geospatial variation nutritionally important at subnational scales. Soil...
Anthropometric characteristics and iron status affect cognitive performance in children. In addition, selenium can influence outcomes; protection of the brain from oxidative stress its role thyroid hormone metabolism are putative mechanisms.To investigate their association with performance, anthropometric indicators, biomarkers, serum children (n = 541) 54-60mo age rural Ethiopia were assessed. Cognitive assessment was conducted administration two reasoning subtests Wechsler Preschool...
Selenium (Se) is an essential element for human health. However, our knowledge of the prevalence Se deficiency less than other micronutrients public health concern such as iodine, iron and zinc, especially in sub-Saharan Africa (SSA). Studies food systems SSA, particular Malawi, have revealed that risks are widespread influenced strongly by geography. Direct evidence includes nationally representative data concentrations blood plasma urine population biomarkers status. Long-range geospatial...
Abstract Zinc (Zn) is an essential nutrient for human health. In Ethiopia, a high prevalence of Zn deficiency has been reported. To explore demographic variation and spatial dependencies in the status Ethiopian population, we analyzed archived serum samples (n = 3373) from 2015 National Micronutrient Survey (ENMS), cross-sectional survey young children, school-age women reproductive age (WRA) men conducted all 9 regions two city administration Ethiopia. Serum concentrations, measured using...
Food crop micronutrient concentrations can be enhanced through agronomic biofortification, with the potential to reduce deficiencies among rural population if they have access fertilizers. Here we reported impact of biofortification on finger millet grain zinc (Zn) and iron (Fe) concentration.A field experiment was conducted in farmers' fields Ethiopia two locations; over seasons one district (2019 2020), a single season (2019) second district. The experimental design had 15 treatment...
Abstract Improved crop genotypes are constantly introduced . However, information on their nutritional quality is generally limited. The present study reports the proximate composition and concentration relative bioavailability of minerals improved finger millets different genotypes. Grains millet (n = 15) grown in research station during 2019 2020 Ethiopia, replicated three times a randomized complete block design, were analysed for composition, mineral (iron, zinc, calcium, selenium),...
Grain and soil were sampled across a large part of Amhara, Ethiopia in study motivated by prior evidence selenium (Se) deficiency the Region's population. The grain samples (teff, Eragrostis tef, wheat, Triticum aestivum) analysed for concentration Se soils various properties, including measured different extractants. Predictive models respective grains developed, predicted values, along with observed concentrations two represented multivariate linear mixed model which selected covariates,...
Selenium (Se) is an essential element for human health and livestock productivity. Globally, Se status highly variable, mainly due to the influence of soil types on content crops, suggesting need identify areas deficiency design targeted interventions. In sub-Saharan Africa, including Ethiopia, data population are largely unavailable, although previous studies indicated potential widespread deficiency. Serum concentration a nationally representative sample Ethiopian was determined, these...
The dataset comprises primary data for the concentration of 29 mineral micronutrients in cereal grains and up to 84 soil chemistry properties from GeoNutrition project surveys Ethiopia Malawi. work provided insights on geospatial variation micronutrient staple crops, potential influencing factors. In Ethiopia, sampling was conducted Amhara, Oromia, Tigray regions, during late-2017 late-2018 harvest seasons. Malawi, national-scale April-June 2018 season. concentrations grain were measured...
Children from low-income countries consuming predominantly plant-based diets but little animal products are considered to be at risk of Fe deficiency. The present study determined the status children resource-limited rural households.A cross-sectional study.Twenty six kebeles (the smallest administrative unit) zones Amhara region, Ethiopia.Children aged 54-60 months (n 628).Grain, roots or tubers were main dietary components consumed by 100 % participants, followed pulses, legumes nuts (66·6...
Background: Selenium deficiency is widespread in the Malawi population. The selenium concentration maize, staple food crop of Malawi, can be increased by applying selenium-enriched fertilizers. It unknown whether this strategy, called agronomic biofortification, effective at alleviating deficiency. Objectives: aim Addressing Hidden Hunger with Agronomy (AHHA) trial was to determine consumption maize flour, agronomically-biofortified selenium, affected serum concentrations women, and children...
Spatial information, inferred from samples, is needed for decision-making, but uncertain. One way to convey uncertain information with probabilities (e.g. that a value falls below critical threshold). We examined how different professional groups (agricultural scientists or health and nutrition experts) interpret presented this way, when making decision about interventions address human selenium (Se) deficiency. The provided was map, either of the probability Se concentration in local staple...
The present study aimed to investigate the influence of genotypic differences on responses zinc and iron agronomic biofortification among yields finger millet. A field experiment was conducted over two seasons in farmers’ fields Ethiopia (2019, 2020). experimental design had 15 treatment combinations comprising three millet genotypes applications different mineral fertilizers. Five soil-applied fertilizer treatments (20 kg h−1 FeSO4 + 25 ZnSO4 NPKS, ha−1 20 30% NPKS) at locations (Gojjam...
Reduction in the proportion of undernourished people worldwide has been achieved despite global population increase.However, achievement reducing undernourishment globally was uneven; sub-Saharan Africa (SSA) particular least progress.In SSA, agriculture is only slowly changing with actual well below potential yields.Failures agricultural policies, weak institutions, and poor governance are root growth stagnation.Agriculture contributes a significant share to SSA economy majority derives...
Dietary zinc (Zn) deficiency is widespread globally, and in particular among people sub-Saharan Africa (SSA). In Malawi, dietary sources of Zn are dominated by maize spatially dependent variation grain concentration, which will affect intake, has been reported at distances up to ~ 100 km. The aim this study was identify potential soil properties environmental covariates might explain longer-range spatial concentration. Data for concentrations, properties, were obtained from a representative...
Micronutrient deficiencies (MNDs), also known as hidden hunger, affect more than a quarter of the global population. Agronomic biofortification helps to increase concentration target mineral in food crops and improve human dietary intake. It is means providing nutrient-dense foods larger population, especially among rural resource-poor settings, that they have access fertilizers. However, feasibility agronomic combating hunger depends on several factors addition fertilizer access, including...
<title>Abstract</title> This study quantifies the impact of iodized salt on child survival and academic achievement based sudden nationwide changes in access to salt, given naturally occurring geographic variation iodine. We combine data birth timing test scores national school-leaving exams from 2003 2019 with health surveys newly collected measures soil grain iodine concentrations, finding that children longer exposure utero infancy during 1990s went have lower mortality higher scores,...
Background: With near universal consumption of salt and technological advances that have made its fortification with multiple micronutrients feasible, has great potential for public health impact as a delivery vehicle not only iodine but micronutrients. Decisions around modifying existing standards to include one or more additional should consider impacts also stakeholder-specific cost implications. Objective: We aimed estimate the total incremental expanding Ethiopia's iodization program...
Abstract Background Micronutrient deficiencies including selenium (Se) are widespread in Malawi and potentially underlie a substantial disease burden, particularly among poorer marginalised populations. Concentrations of Se staple cereal crops can be increased through application fertilisers – process known as agronomic biofortification (agro-biofortification) this may contribute to alleviating deficiencies. The Addressing Hidden Hunger with Agronomy (AHHA) trial aims establish the efficacy...