High iodine intake by preschool children in Miyagi prefecture, Japan

Abstract

A correction method was developed for estimation of daily dietary iodine intake. The iodine intake level for preschoolers was comparable to levels for adult population.

Iodine intake by adult residents of a farming area in Iwate Prefecture, Japan, and the accuracy of estimated iodine intake calculated using the Standard Tables of Food Composition in Japan

“…The regression line in this study differed from that in the previous study on children [9]. Namely, the slope and the intercept both differed significantly (p \ 0.05) between this study and the child study (Y = 1.02 ?…”

“…In the previous study with children aged 3-6 years [9], the calculated values (101.8 in GM, 90.9 for MED) were, in fact, lower than the measured values (117.6 in GM, 96.3 for MED). Therefore, the ratio for children was 1.155 [9], i.e., more than 1.00. This higher ratio may be attributable to the unknown iodine content in certain foods.…”

“…Since the process for instrumental analysis has already been described in detail in a previous study on children [9], a short description will be given here. A portion (2.5 g) of the homogenate was wet-digested under the alkaline conditions.…”

“…In a previous study [9], daily iodine intake for children was assessed by these two methods and the results were compared. It was found that the values attained by the two methods correlated closely, and the calibrated values derived from calculated values were sufficiently accurate to apply in daily situations.…”

“…It was found that the values attained by the two methods correlated closely, and the calibrated values derived from calculated values were sufficiently accurate to apply in daily situations. A regression model for calibrating the calculated daily iodine intake of children was published [9].…”