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Moon
Iodine content of human milk and dietary iodine intake of Korean lactating mothers.Moon S, Kim J. Int J Food Sci Nutr. 1999 May;50(3):165-71. [abstract only]
"Korea's food culture
includes the consumption of seaweed, which is abundant and has a
high iodine content. Because it is customary to serve seaweed
soup to new mothers, the consumption of seaweed increases
dramatically when a woman is lactating. The present study was
undertaken for the purpose of determining the iodine content in
human milk of Korean lactating mothers according to dietary
iodine intake. The iodine content of human milk and dietary
iodine intake from 50 lactating mothers were analyzed at 2 to 5
days and at 4 weeks postpartum. The dietary iodine intake was
assessed by the 24-hour recall method. The iodine content in
human milk was analyzed by neutron activation analysis (NAA). The
average daily iodine intake of lactating mothers was 2744
micrograms at 2 to 5 days postpartum, decreasing significantly to
1295 micrograms at 4 weeks postpartum. The major sources of
iodine were seaweed (87%) and cows' milk (7%). The average iodine
content in colostrum and mature milk was 2170 micrograms/l and
892 micrograms/l, respectively. There was a significant reduction
in the levels of iodine in human milk depending on the lactation
period. A significant correlation between maternal iodine intake
and iodine content of human milk was observed (P < 0.0001). The
frequency of seaweed soup intake in lactating mothers seems to be
a modifying factor in the iodine intake level and the iodine
content in human milk. The level of dietary iodine intake and the
iodine content of breast milk of Korean lactating mothers is
found to be much higher than in other countries." |
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