Breast Milk Iodine and Iodine Status of Breast-Fed Infants.
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Date
2015-07
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Abstract
Background: Breast milk is the only source of iodine for exclusively breast-fed infants.
Iodine status of breast-fed infants depends on iodine in breast milk and also number of
feeding in 24 hours. Iodine deficiency and iodine excess both have bad impact on
infant’s health. Objective: To measure the iodine in breast milk and to evaluate iodine
status of their breast-fed infants. Materials and method: This observational analytical
study was carried out in the department of Biochemistry, Bangabandhu Sheikh Mujib
Medical University, Dhaka with active cooperation of Kumudini Women’s Medical
College Hospital, Mirzapur, Tangail involving fifty lactating mothers and their
exclusively breast-fed infants. Early morning urine and breast milk samples were
collected in dry and clean plastic container free from any chemical contamination.
Urinary iodine was used as indicator for assessing iodine status. All statistical analyses
were done by using SPSS (statistical programme for social science) 12 version software
package for Windows. Results: The median (range) urinary iodine concentration of
lactating mothers and their breast-fed infants were 225.25 μg/L (61.50-530.00) and
225.75 μg/L (100.50-526.00) respectively. The median (range) breast-milk iodine
concentration was 157 μg/L (54.50-431.50) which was more than three times of
recommended minimum concentration (50 μg/L). Only 2 (4%) lactating mothers had
mild biochemical iodine deficiency (UIE, 50-99 μg/L). There was no biochemical iodine
deficiency of breast-fed infants. Iodine in breast milk of lactating mothers was positively
correlated with their urinary iodine excretion (p<0.01). Infant’s urinary iodine was
positively correlated with iodine concentration in breast milk (p<0.01) and with urinary
iodine of lactating mothers (p<0.01). Conclusion: Lactating mothers and their
breast-fed infants in this study were iodine sufficient. If iodine content of breast-milk is
within normal range, 10-12 numbers of feeding in 24 hours for infants is enough to get
sufficient iodine from their mother’s milk.
Description
Keywords
Urinary iodine excretion (UIE), breast milk iodine concentration, iodine status of lactating mothers, breast-fed infants
Citation
Molla Golam Morshed, Arslan M Iqbal, Milky Mafruha Tazkin. Breast Milk Iodine and Iodine Status of Breast-Fed Infants. Delta Medical College Journal. 2015 July; 3(2): 74-77.