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Weaning and stunting affect nitrogen and carbon stable isotope natural abundances in the hair of young children.


ABSTRACT: Natural abundances of stable nitrogen and carbon isotopes (?15N and ?13C) can vary with both dietary intake and metabolic (specifically catabolic) state. In low-income countries, weaning is a period of dietary transition from milk to plant-based foods and a high-risk period for malnutrition. We explored how diet and malnutrition impact hair ?15N and ?13C in young children by an observational, cross-sectional study in Cox's Bazar District, Bangladesh [255 children, 6-59 months with 19.6% wasted (7.1% severely) and 36% stunted (9.8% severely)]. Hair ?15N and ?13C exhibited exponential decreases with age, with the loss of one trophic level (3.3‰ and 0.8‰, respectively) from 6 to 48 months, which we associate with the shift from exclusive breastfeeding to complete weaning. After adjustment for age and breastfeeding status, hair isotopic values were unaffected by wasting but lower in severe stunting (-0.45‰ to -0.6‰, P?

SUBMITTER: Dailey-Chwalibog T 

PROVIDER: S-EPMC7018826 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Natural abundances of stable nitrogen and carbon isotopes (δ<sup>15</sup>N and δ<sup>13</sup>C) can vary with both dietary intake and metabolic (specifically catabolic) state. In low-income countries, weaning is a period of dietary transition from milk to plant-based foods and a high-risk period for malnutrition. We explored how diet and malnutrition impact hair δ<sup>15</sup>N and δ<sup>13</sup>C in young children by an observational, cross-sectional study in Cox's Bazar District, Bangladesh [2  ...[more]

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