Iodine nutrition during pregnancy in Toronto, Canada
Pamela M Katz, Angela M Leung, Lewis E Braverman, Elizabeth N Pearce, George Tomlinson, Xuemei He, Jaclyn Vertes, Nan Okun, Paul G Walfish, Denice S Feig, Pamela M Katz, Angela M Leung, Lewis E Braverman, Elizabeth N Pearce, George Tomlinson, Xuemei He, Jaclyn Vertes, Nan Okun, Paul G Walfish, Denice S Feig
Abstract
Objective: To evaluate the status of iodine nutrition among pregnant women presenting for routine antenatal care in Toronto, Canada, as determined by the median urine iodine concentration (UIC) of this population.
Methods: A cross-sectional, observational study was conducted involving 142 pregnant women recruited from four low-risk antenatal outpatient clinics in Toronto, Canada. Subjects completed a questionnaire and provided a spot urine sample for the measurement of iodine concentration.
Results: Mean maternal age was 33.8 ± 4.3 years. Mean gestational age was 29.3 ± 7.8 weeks. The median UIC was 221 μg/L (interquartile range, 142 to 397 μg/L). Six women (4.2%) had urine iodine levels <50 μg/L, and 36 women (25.4%) had levels between 50 and 150 μg/L.
Conclusion: This cohort of primarily Caucasian, well-educated, and relatively affluent pregnant women in Toronto, Canada, are iodine sufficient, perhaps due to universal salt iodization and/or other dietary and lifestyle factors.
Conflict of interest statement
DISCLOSURE
The authors have no multiplicity of interest to disclose.
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Source: PubMed