Correlation between diabetes mellitus and thyroid dysfunction

Author(s): S. Srinivas 1
1Department of Medicine, Geethanjali Medical college, Udaipur, Rajasthan, India.
Copyright © S. Srinivas. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aim: To assess relation between diabetes mellitus and thyroid dysfunction.
Methodology: 105 type II diabetes mellitus patients of both genders were included. Serum TSH (Thyroid Stimulating Hormone), free \(T_3\) (Triiodothyronine) and free \(T_4\)(Thyroxine) were determined in all enrolled patients.
Results: There were 50 males and 55 females in the present study. Age group 21-30 years had 15 patients, 31-40 years had 26, and 41-50 years had 64 patients. Duration of diabetes was 8.4 years, and the level of glycosylated hemoglobin (HbA1C) was 9.2 years. A significant difference was observed (P< 0.05). Serum T3 was increased by 15% and decreased by 4%. Free T3 was increased in 5% and decreased in 13%, and free T4 was increased in 7% and decreased in 5%. There were 20 hypothyroidism and 29 hyperthyroidism patients. Maximum hypothyroidism patients (12) and hyperthyroidism patients (14) were seen with >7 HbA1C levels.
Conclusion: Most of the type II DM patients had hypothyroidism than hyperthyroidism.

Keywords: Diabetes; Thyroid dysfunction; Thyroxine.