Thyroid disorders are commonly overwhelming health conditions reported worldwide.The prevalence of thyroid disorders such as hypothyroidism and hyperthyroidism is increasing in developed and developing countries,including India.This is due to change in traditional foods to Besides low/insufficient iodine intake,smoking,ageing,genetic susceptibility,lifestyle,usage of new medicine,endocrine disrupting chemicals and immune status of an individual are the key determinants for thyroid disorders.This review emphasizes the various disorders of the thyroid gland and,its epidemiology and treatment methods.