Can thyroid problems cause infertility?

Yes, both hypothyroidism and hyperthyroidism can lead to infertility or difficulties with conception. In hypothyroidism, low thyroid hormone levels can disrupt the menstrual cycle, causing irregular periods or ovulation problems, which can make it harder to conceive. Hyperthyroidism may also cause menstrual irregularities and increase the risk of miscarriage. Thyroid disorders can affect fertility hormones, including prolactin and luteinizing hormone (LH). A thyroid function test (TFT) can help diagnose and treat thyroid imbalances, improving the chances of a successful pregnancy with appropriate medical care.