Fertility and Pregnancy: The Impact of Thyroid Disorders in Women By Dr.Pratyusha Gunreddy, MBBS,MS(OBG),FRM , Co nsultant Fertility Specialist Ankura Hospital for Women and Children Thyroid disorders are among the most common endocrine conditions affecting women, significantly influencing fertility and pregnancy. The thyroid gland plays a crucial role in regulating metabolism, hormone production, and reproductive health. An imbalance in thyroid hormones—either hypothyroidism (underactive thyroid) or hyperthyroidism (overactive thyroid)—can disrupt ovulation, menstrual cycles, and overall reproductive function. The classic definition of SCH is a thyrotropin (thyroid-stimulating hormone [TSH]) level greater than the upper limit of the normal range (4.5–5.0 mIU/ L) with normal free thyroxine (FT4) levels. With this definition, the incidence of SCH in the reproductive-age population is approximately 4%–8% Recommendations for SCH vary between the Ameri...