title: Similar serum concentrations of thyroid hormones in two geographically separate populations on disparate iodine intake.
abstract: Serum thyroid hormones were measured in Montreal, Canada (urinary iodine 446 +/- 164 micrograms/day) and Zagreb, Yugoslavia (urinary iodine 108 +/- 32 microgram/day). The serum concentrations of thyroxine and triiodothyronine in the two populations were almost identical. We conclude that dietary iodine, within accepted normal limits, is not a factor in determining serum thyroid hormone levels. The wide differences in reported serum triiodothyronine concentrations are related to methodological problems.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005843:Geography; D006801:Humans; D007455:Iodine / Q000652:urine*; D008297:Male; D008875:Middle Aged; D011792:Quebec; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood*; D015022:Yugoslavia
chemical_list: D014284:Triiodothyronine; D007455:Iodine; D013974:Thyroxine