Urinary iodine excretion in a geographically stratified Danish population sample not affected by iodination programmes. A change towards higher values.
The excretion of urinary iodine was studied in a representative population sample from the county of Funen, Denmark, comprising 505 persons between 25-44 years of age, stratified according to geography, age, and sex. Urine samples were collected for 5 h during late afternoon and early evening. The 24-h iodine excretion was estimated on the basis of iodine and creatinine determinations using correlation equations determined in a pilot study of 50 men and women. The iodine excretion was significantly higher in men: 89 micrograms/24 h (median) than in women: 76 micrograms/24 h; the whole population: 85 micrograms/24 h. No significant differences were observed among the age groups studied. The iodine excretion was significantly higher in people living on small islands: 98 micrograms/24 h (median) compared with 84 micrograms/24 h in urban regions and 78 micrograms/24 h in rural districts. Median iodine excretion per gram of creatinine was 58.8 micrograms for the whole sample. The iodine excretion for men was 77% higher than reported in an earlier investigation performed in Funen, 1969, but still lower than internationally recommended (WHO).
Department of Medicine, Odense University Hospital, Denmark.
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V
Haas
M
M
Marley
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A
Green
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Date
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M
Blichert-Toft
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EF
Mogensen
D000328:Adult; D002940:Circadian Rhythm; D003718:Denmark; D005260:Female; D006801:Humans; D007455:Iodine / Q000008:administration & dosage / Q000652:urine*; D008297:Male; D010865:Pilot Projects; D012016:Reference Values; D012424:Rural Population; D014505:Urban Population
D007455:Iodine