Pregnancy iodine supplementation

The daily requirement for iodine in adults is 1-2 /ag/kg body weight. In the U.S., recommended daily allowances for iodine range from 40 to 120 /xg for children, 150 fxg for adults, 220 fxg for pregnancy, and 270 p,g for lactation. Dairy products and fish have relatively high iodine contents. Because of concerns of iodine insufficiency, iodine supplementation has been widely used for prophylaxis and therapy. The most practical form of this supplementation has been addition of iodide or iodate (now preferred) to table salt. In the U.S., such supplementation is optional and iodized salt provides 100 fxg of iodine/g. 

UI concentration will follow throughout their pregnancy. Trimester-specific data determined by lA and tandem mass spectrometry are now available and can facilitate comparisons across different laboratories and populations. The availability of the normal ranges of TH concentrations throughout pregnancy allows individualized thyroxine therapy, as well as iodine supplementation when necessary. 

The availabihty of normal ranges of TH concentrations throughout pregnancy allows individualized thyroxine therapy, as well as iodine supplementation when necessary. 

Iodine Deficiency in Pregnancy Iodine Deficiency and Supplementation in Pregnancy... 

It has been recommended that iodine be added to all prenatal vitamins (National Academy of Sciences, 2003) and that women receive 150pg iodine supplements daily during pregnancy and lactation (Becker et at, 2007 Zimmermann and Delange, 2004). 

Iodine deficiency at any degree of severity causes maternal and fetal hypothyroxinemia. As thyroid hormones of the mother and the fetus must be kept at optimal levels, iodine prophylaxis should be provided, especially in iodine deficient areas. To establish normal fetal brain development, iodine supplementation must be started before pregnancy and should be continued during the gestational period. 

What other kinds of supplements should be given Iodine supplements may be given in the form of potassium iodine or iodine-containing multivitamin pills especially designed for pregnancy purposes. The amount of iodine present should be expressed in micrograms. The only iodine compounds permitted are potassium iodide, potassium iodate, sodium iodide and sodium iodate. 

Another area of focus was pregnant women and their newborn (Pedersen et aL, 1990, 1993 Nohr et aL, 1993, 1994). Women not receiving iodine supplements had a gradual increase in serum TSH during pregnancy (Weeke et aL, 1982) that was prevented by iodine supplements (Pedersen ij /., 1993). 

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