Background: Postpartum thyroiditis (PPT) is an autoimmune disease that usually occurs in the first year after parturition and presents with periods of transient thyrotoxicosis and/or hypothyroidism, and in some cases results in permanent hypothyridism.Objective: To determine the prevalence of PPT in healthy postpartum women in Shiraz, southern Iran.Methods: Of 460 postpartum women from Shiraz ...