The iodine requirements for pregnant and lactating women, how population iodine status can be assessed, the effects of maternal iodine deficiency and excess, and current data regarding efficacy of iodine supplementation for women who are pregnant or lactating
Iodine
Menstrual and women's health is the main area connected here, and any felt benefit should be read together with the human evidence base.
Representative tier calculated from paper evidence that passed the collection audit.
Main benefit evidence
The representative ingredient tier is calculated from these target-level evidence groups.
Women's health7 studiesTier-BMenstrual and women's healthFairly consistent positive signal in studiesFelt benefit focusSupplement contextPotential benefit studied in Women's health.Open metrics>
Nutrient status6 studiesTier-BNutrient status markersFairly consistent positive signal in studiesResearch marker focusSupplement contextThis card is closer to a measured biomarker or lab outcome than a directly felt user benefit.Closer to a research marker than a directly felt benefit.Open metrics>
Cognition and focus3 studiesTier-CCognition, memory, and focusSome positive signal observedFelt benefit focusPatient-group studyPotential benefit studied in Cognition and focus.Open metrics>
Recent research
10 new papers were added in this period. No new risk signal was identified.
What's new
Most notable recent finding
Key cautions to review
Standalone side-effect signals and combination cautions are listed separately.
Standalone side effects
Evidence summaries
Paper IDs and full lists are private. Only study types and summaries are shown.
Daily iodine supplementation in mildly iodine-deficient pregnant women had no effect on child neurodevelopment at age 5-6 years and was randomised using mixed-effects models.
There is insufficient good-quality evidence to support current recommendations for iodine supplementation in pregnancy in areas of mild-to-moderate deficiency, and well-designed RCTs, with child cognitive outcomes, are needed in pregnant women who are moderate
3 more summariesLimited representative sample by study type.>
Subclinical iodine deficiency persists even in Western Europe, especially among girls and women, being an issue in certain physiological conditions, such as pregnancy and lactation, and in people consuming unbalanced vegetable-based or salt-restricted diets.
Pregnant women in this region of Australia were unlikely to reach recommended iodine levels without an iodine supplement, even after the mandatory iodine supplementation of bread was instituted in October 2009.
Iodine supplementation in pregnancy did not result in better childhood neurodevelopment in this small trial and adequately powered randomised controlled trials are needed to provide conclusive evidence regarding the effect of iodine supplementation inregnancy.