Publications by authors named "Becky Tsang"

Large-scale food fortification (LSFF) can increase dietary micronutrient intake and improve micronutrient status. Here we used food balance sheet data from the Food and Agriculture Organization of the United Nations to estimate current country-specific prevalences of inadequate zinc intake. We assessed the potential effects of improving existing LSFF programmes for cereal grains or implementing new programmes in 40 countries where zinc deficiency is a potential public health problem.

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Double fortified salt (DFS; with iron and iodine) was introduced in social safety net programmes (SSNPs) in Madhya Pradesh (MP) and Gujarat states in 2018. Nutrition International (NI) provided critical support for the intervention. An impact evaluation in MP found high DFS uptake, exceeding 90%.

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Article Synopsis
  • Fortifying maize and wheat flours with folic acid has reduced neural tube defects, but other food options are needed, especially in low-income countries where these grains aren’t widely consumed.
  • Researchers analyzed data from 81 low-income and lower-middle-income countries to find alternative foods for fortification, using surveys from 1997-2018 to identify dietary habits and population coverage.
  • The study highlighted oil, sugar, and salt as popular alternative food vehicles for fortification, with extensive coverage, while also noting that dairy products were among the most researched options for folic acid fortification.
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Context: Previous reviews have focused on evaluating the efficacy and effectiveness of rice fortification, despite the need to also understand the outcomes of micronutrient retention, organoleptic properties, and acceptability to inform nutrition programs.

Objective: This systematic review aims to consolidate existing evidence on micronutrient retention, organoleptic properties, and acceptability of fortified rice.

Data Sources: Eligible articles were identified from 22 electronic databases and personal referrals and reviews.

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Seventeen per cent of the world's population is estimated to be at risk of inadequate zinc intake, which could in part be addressed by zinc fortification of widely consumed foods. We conducted a review of efficacy and effectiveness studies to ascertain the effect of zinc fortification [postharvest fortification of an industrially produced food or beverage; alone or with multiple micronutrients (MMN)] on a range of health outcomes. Previous reviews have required that the effect of zinc be isolated; because zinc is always cofortified with MMN in existing fortification programs, we did not impose this condition.

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Article Synopsis
  • Food fortification effectively prevents micronutrient deficiencies, but barriers to successful implementation can be complex and multifaceted.
  • A systematic framework has been developed to identify and address gaps in food fortification programs, consisting of four phases: connect theory to practice, create a research agenda, conduct research, and analyze findings.
  • This framework aims to enhance the use of implementation science in food fortification efforts, thereby improving public health interventions and ensuring better access to essential nutrients.
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The addition of iodine to edible salt has been one of the most important public health successes of the past half century, enabling most countries to achieve optimal iodine intake and protect the brains of unborn children from the adverse consequences of iodine deficiency. Salt has been an ideal vehicle for this effort because of its near universal and narrow range of consumption, relative ease of technology for salt iodization, and capacity for virtually all salt producers to add iodine. As a result of the success of salt iodization, there has been growing interest in using salt as a vehicle for other important micronutrients, particularly the addition of iron to iodized salt to produce double-fortified salt (DFS), to combat the persistent problem of iron deficiency and iron deficiency anemia.

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Article Synopsis
  • Food fortification aims to enhance diet quality by adding essential nutrients to commonly consumed foods like maize flour, rice, salt, oil, and wheat flour across 153 countries.
  • The research evaluated two scenarios: a maximum scenario (assuming full industrial processing and fortification) and a realistic scenario (considering actual processing levels), noting different potentials for nutrient contributions.
  • In the maximum scenario, up to 75% of nutrient needs were met for various vitamins and minerals, while in the realistic scenario, iodine needs were exceeded while other nutrients remained below 35%, with no country exceeding safe intake limits for any nutrient.
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Background: We estimated the global proportion of folic acid-preventable spina bifida and anencephaly (FAP SBA) potentially prevented through mandatory double fortification of iodized salt with folic acid.

Methods: Using United Nations Children's Fund (UNICEF) and Global Fortification Data Exchange (GFDx) data sets, we modeled country-specific number of FAP SBA cases prevented annually using (a) current coverage of the salt in households worldwide and (b) expected daily amount of folic acid intake from folic acid-fortified iodized salt. Our evidence-based modeling strategy assumed mandatory folic acid fortification of salt at 20 ppm, and that at 200 μg/day intake of folic acid through fortified salt, should achieve 100% prevention of all FAP SBA in countries.

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Background: Solomon Islands (SI) mandated wheat flour fortification in 2010. Rice is a key staple food in SI, and its fortification may provide an opportunity to deliver additional micronutrients to the population.

Objective: To determine whether fortified rice (proposed) and fortified wheat flour potentially benefit women of reproductive age (WRA).

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Inadequate folate status in women of reproductive age (WRA) can lead to adverse health consequences of public health significance, such as megaloblastic anemia (folate deficiency) and an increased risk of neural tube defect (NTD)-affected pregnancies (folate insufficiency). Our review aims to evaluate current data on folate status of WRA. We queried eight databases and the World Health Organization Micronutrients Database, identifying 45 relevant surveys conducted between 2000 and 2014 in 39 countries.

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Background: Fortification of cereal grains with at least iron or folic acid is legislated in 85 countries worldwide. Relative to wheat and maize flour, rice fortification is relatively new and provides an opportunity to deliver essential micronutrients to populations that consume rice as a dietary staple.

Objective: To describe miller and public sector experiences and perspectives on rice fortification with micronutrients in Colombia and offer recommendations for policy makers.

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Background: Folate-sensitive neural tube defects (NTDs) are an important, preventable cause of morbidity and mortality worldwide. There is a need to describe the current global burden of NTDs and identify gaps in available NTD data.

Methods And Findings: We conducted a systematic review and searched multiple databases for NTD prevalence estimates and abstracted data from peer-reviewed literature, birth defects surveillance registries, and reports published between January 1990 and July 2014 that had greater than 5,000 births and were not solely based on mortality data.

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Folate is found naturally in foods or as synthetic folic acid in dietary supplements and fortified foods. Adequate periconceptional folic acid intake can prevent neural tube defects. Folate intake impacts blood folate concentration; however, the dose-response between natural food folate and blood folate concentrations has not been well described.

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Background: The methylenetetrahydrofolate reductase (MTHFR) 677C>T polymorphism is a risk factor for neural tube defects. The T allele produces an enzyme with reduced folate-processing capacity, which has been associated with lower blood folate concentrations.

Objective: We assessed the association between MTHFR C677T genotypes and blood folate concentrations among healthy women aged 12-49 y.

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To determine the association between a range of inherited blood disorders and indicators of poor nutrition, we analyzed data from a population-based, cross-sectional survey of 882 children 6-35 months of age in western Kenya. Of children with valid measurements, 71.7% were anemic (hemoglobin < 11 g/dL), 19.

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