Lack of Significant Association between Intima-Media Thickness in the Carotid Artery and Serum TSH Level. The Tromsø Study

No significant relationship between carotid IMT and serum TSH levels was observed in normal, non thyroxine taking, subjects. Carotid IMT was increased in subjects taking thyroxine. Whether the increase in carotid IMT is due to thyroxine ingestion or underlying thyroid disease cannot be answered from the study.