Danish investigation of iodine intake

Unpublished results from the Danish Investigation of Iodine Intake and Thyroid Diseases before iodine fortification was introduced. Results are median values with 25th and 75th percentiles in parentheses. 

Data from the Danish Investigation of Iodine Intake and Thyroid Diseases based on a FFQ before iodine fortification was introduced in Denmark. Food with a low iodine content was not included, iodine intake from other sources is a little underestimated and iodine from milk, fish and eggs consequently a little overestimated. Rasmussen efa/., (2002). 

Notes. Iodine exoretion in casual urine samples expressed in two ways in 60-65-year-old subjects living in an area with a relatively high intake of iodine (eastern part of Denmark, Copenhagen), before and after iodization. After fortification, the estimated median iodine exoretion seems to be sufficient, while the iodine oonoentration among elderly women appears to be borderline. Unpublished data from the Danish Investigation of Iodine Intake and Thyroid Disease. N, numbers. 

DanThyr The Danish investigation of iodine intake and thyroid diseases... 

A Danish study of iodine intake in elderly men and women was made in 1988 after a number of studies had suggested that the iodine intake in Denmark has been stable and relatively low for the last 30 years (Pedersen et ai, 1995). AH subjects were born in 1920 and were thus 68-years old at the time of the study. Iodine was measured in a spot urine sample collected in the morning. Careful investigation of the intake of supplementary iodine was taken into account, which none of the previous studies had done. The median urine excretion was 42p,g/l, which indicates moderate iodine deficiency (see Table 116.1). Analyses among users and nonusers of daily iodine supplements indicated that the basic level of iodine intake was overestimated if individual iodine supplementation was not taken into account. About half of the population took no supplements. 

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