Can TSH help with fertility?

TSH (thyroid-stimulating hormone) is a key lab marker for thyroid function. Thyroid dysfunction—both hypo- and hyperthyroidism—can impair fertility by disrupting ovulation, sperm quality, and hormonal balance. Measuring TSH is therefore part of standard fertility workup. However, TSH itself is not a treatment; it is a diagnostic indicator. If an underlying thyroid disorder is identified, appropriate medication (e.g., levothyroxine) can improve fertility outcomes. The evidence linking TSH to fertility is strong (human-strong), supported by numerous clinical studies and guidelines. Caution: an isolated slightly elevated TSH without other abnormalities does not always require treatment—individual assessment by an endocrinologist or reproductive specialist is essential. MyBody-X offers hormone tests that include TSH, but these do not replace medical evaluation. Interpretation must be done in a clinical context.