Neonatal thyroid function born to mothers living with long-term excessive iodine intake from drinking water.

Objective: The effects of long-term excessive maternal iodine intake on neonatal thyroid function are less known. This study aimed to assess the effects of maternal excessive iodine intake from drinking water on thyroid functions of both mothers and their neonates.

Design And Methods: This observational study was performed in high iodine (HI) areas and adequate iodine (AI) intake areas, including 384 healthy pregnant women in late gestation (mean week 39·3 ± 1·6 weeks) and their newborns.

Exploration of the safe upper level of iodine intake in euthyroid Chinese adults: a randomized double-blind trial.

Background: The beneficial health effects associated with Universal Salt Iodization are well known. Yet, little is known about the possible adverse health effects in people with high iodine intake and the safe daily intake upper limit in the Chinese population.

Objective: The objective of this study was to explore the safe upper level of total daily iodine intake among adults in China.