What to watch with TSH Schilddrüse and menopause?

During menopause, estrogen declines significantly, which can alter the hypothalamic-pituitary-thyroid axis. TSH (thyroid-stimulating hormone) is the primary screening marker, but it should not be interpreted in isolation. In perimenopause, TSH often rises slightly, while free T3 and T4 remain within normal ranges. A TSH above 2.5 mU/L may indicate subclinical hypothyroidism, especially if symptoms like fatigue, weight gain, or cold intolerance are present. Estrogen fluctuations also affect thyroid hormone binding proteins, making free hormone measurements (fT3, fT4) more reliable than total levels. Thyroid antibodies (TPO-Ab, Tg-Ab) should be checked because autoimmune thyroiditis (Hashimoto) frequently emerges during this life stage. Crucially, symptoms such as hot flashes, sleep disturbances, and mood changes can overlap between menopause and thyroid dysfunction. Therefore, a comprehensive panel (TSH, fT3, fT4, antibodies) is recommended, along with clinical correlation. If in doubt, referral to an endocrinologist is prudent. This advice is based on established clinical practice, not on the provided context documents.