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Evidence-Based Supplement Research

Evidence-Based Supplement Research

Iodine and Improved Cognitive Function

Doses used in studies

µg/day: 150–300 (median 225, IQR 150–300) — 1 study

Safety in these studies

adverse neurodevelopmental outcomesIncreased riskOR = 1.19, 95% CI: 1.03 to 1.39
Binary outcome analysis confirmed increased odds of adverse neurodevelopmental outcomes (OR = 1.19, 95% CI: 1.03 to 1.39, p = 0.026).
from: Maternal Iodine Status During Pregnancy and Child Neurodevelopment: A Systematic Review an

1 of 1 paper

Maternal Iodine Status During Pregnancy and Child Neurodevelopment: A Systematic Review and Dose-Response Meta-Analysis of Prospective Cohort Studies.
- 2026-05-05
- Meta-Analysis
- Nutrients 18(9)
- - Qingshan Luo
  - Zhou Wang
  - Jie Jiang
  - Xianru Luo
  - Tingxuan Feng
  - Chao Wang
  - Shasha Ruan
  - Xiaoheng Li
- PubMed: 42124075
- DOI: 10.3390/nu18091474
5 Insights on
- Improved Cognitive Function
- High evidence
- Rigorous Journal
- Pregnant Women
cognitive outcomes as most consistently affected (g = -0.22, 95% CI: -0.30 to -0.14; I² = 37.5%)
Effect
Beneficial
Effect size
Small
Significant
Yes
Dose
dietary iodine intake (approximately 150–300 µg/d)