Female Reproductive System and Thyroid Dysfunction: Findings from a 12-Year Follow-Up in the Tehran Thyroid Study

The impact of thyroid dysfunction (TD) on the female reproductive system has been extensively documented. While there is evidence suggesting that alteration in female reproductive status may affect thyroid function, conflicting results have prevented definitive conclusions. This study aimed to investigate the associations of parity, spontaneous abortion (mentioned as abortion throughout this study), and menopause status with the prevalence and incidence of TD.