Thyroid hormones play an important role in regulating energy homeostasis, carbohydrate, lipids and protein metabolism. These hormones accelerate metabolic processes and may be associated with metabolic syndrome. Hyperthyroidism is usually associated with low cholesterol and glucose intolerance; whereas hypothyroidism is associated with high cholesterol tendency, and patients are prone to weight gain and cardiac signs like bradycardia. Thyroid functions affect the components of MetS including HDLcholesterol (HDL-C), triglycerides (TG), blood pressure and plasma glucose.