Journal article
Assessment of breast milk iodine concentrations in lactating women in Western Australia
Nutrients, Vol.8(11)
2016
Abstract
Breast-fed infants may depend solely on an adequate supply of iodine in breast milk for the synthesis of thyroid hormones which are essential for optimal growth and cognitive development. This is the first study to measure breast milk iodine concentration (BMIC) among lactating women in Western Australian (n = 55). Breast milk samples were collected between 2014 and 2015 at a mean (±SD) of 38.5 (±5.5) days post-partum. The samples were analysed to determine median BMIC and the percentage of samples with a BMIC < 100 µg/L, a level considered adequate for breast-fed infants. The influence of (a) iodine-containing supplements and iodised salt use and (b) consumption of key iodine-containing foods on BMIC was also examined. The median (p25, p75) BMIC was 167 (99, 248) µg/L and 26% of samples had a BMIC < 100 µg/L. Overall, BMIC tended to be higher with iodine-containing supplement usage (ratio 1.33, 95% confidence interval (CI) (1.04, 1.70), p = 0.030), cow’s milk consumption (ratio 1.66, 95% CI (1.23, 2.23), p = 0.002) and lower for Caucasians (ratio 0.61, 95% CI (0.45, 0.83), p = 0.002), and those with secondary school only education (ratio 0.66, 95% CI (0.46, 0.96), p = 0.030). For most women, BMIC was adequate to meet the iodine requirements of their breast-fed infants. However, some women may require the use of iodine-containing supplements or iodised salt to increase BMIC to adequate levels for optimal infant nutrition.
Details
- Title
- Assessment of breast milk iodine concentrations in lactating women in Western Australia
- Authors/Creators
- A. Jorgensen (Author/Creator) - Curtin UniversityP. O’Leary (Author/Creator)I. James (Author/Creator) - Murdoch UniversityS. Skeaff (Author/Creator) - University of OtagoJ. Sherriff (Author/Creator) - Curtin University
- Publication Details
- Nutrients, Vol.8(11)
- Publisher
- MDPI
- Identifiers
- 991005544856907891
- Copyright
- © 2016 by the authors
- Murdoch Affiliation
- Institute for Immunology and Infectious Diseases
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 1 Clinical & Life Sciences
- 1.213 Thyroid Disorders
- 1.213.168 Thyroid Disorders
- Web Of Science research areas
- Nutrition & Dietetics
- ESI research areas
- Agricultural Sciences