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Interrelationship between iodine nutritional status of lactating mothers and their absolutely breast-fed infants

N Pal1, S K Samanta2, A Chakraborty1

  • 1Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University of Calcutta, University College of Science and Technology, 92, APC Road, Kolkata, West Bengal, 700 009, India.

European Journal of Pediatrics
|October 25, 2017
PubMed

Iodine nutritional status of 128 lactating mothers and their breast-fed infants (1-3 months) from iodine-replete villages during post-salt iodization period was evaluated. Mothers' urine, blood, and breast milk (BM) and infants' urine and blood were collected and analyzed for iodine and serum FT4 and TSH estimation. Mothers' and infants' age, parity, occupation, education, and household income were recorded. Median urinary iodine concentration (UIC) of infants was 250 μg/L, indicating their iodine intake was more than adequate. Mothers' median UIC was 185 μg/L, indicating adequate iodine nutrition; however, 13.28% had mild to severe deficiency. Median breast milk iodine concentration (BMIC) was 230 μg/L, which was more than their median UIC 185 μg/L. In iodine-deficient mothers, positive correlation was found between mothers' and infants' serum FT4 and TSH levels, and negative correlation was found between mothers' and infants' serum FT4 and TSH levels in excessive iodine nutrition group.

Keywords:
Breast milk iodineInfantsIodine nutritionLactating womenUrinary iodineWest Bengal

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