Micronutrient deficiencies continue to be widespread among children under-five in low-and
middle-income countries (LMICs), despite the fact that several effective strategies now exist …

Vitamin A (VA) is an essential nutrient often lacking in the diets of people in developing
countries. Accurate biomarkers of VA status are vital to inform public health policy and …

Background Lactating women are at increased risk for vitamin A (VA) deficiency due to
demands for breast milk content and limited hepatic stores for women in some countries …

ABSTRACT Background Measuring vitamin A (VA) status during lactation is required to
inform dietary recommendations. Limited data exist on VA stores in women. Objectives Our …

The ability of nutrition scientists to measure the status, bioavailability, and bioefficacy of
micronutrients is affected by lack of access to the parts of the body through which a nutrient …

Background Serum retinol and retinol-binding protein (RBP) concentrations are commonly
used biomarkers of vitamin A deficiency (VAD); however, evidence indicates that they are …

Background Biofortification of staple crops with β-carotene is a strategy to reduce vitamin A
deficiency, and several varieties are available in some African countries. β-Cryptoxanthin …

Vitamin A status assessment is not straightforward. Retinol isotope dilution (RID) testing
requires time for the tracer dose to mix with the total body stores of vitamin A (TBS) …

ABSTRACT Background In Tanzania, some districts have single vitamin A (VA) interventions
and others have multiple interventions. There is limited information on total liver VA reserves …

Vitamin A deficiency is a major health risk for infants and children in low-and middle-income
countries. This scoping review identified, quantified, and mapped research for use in …