Does hypothyroidism affect fertility?

Yes. Abnormal thyroid function, whether hyper- or hypo-thyroidism is associated with reproductive problems in women. Generally when thyroid levels are normalized with treatment, reproductive outcomes can be excellent.
In females, it can. High TSH in females have been associated with increased miscarriage and diffuclty in conceiving. Profound hypothyroidism can also make the women amenorrheic (stops mesntruation).The affect of hypothyroidism on male fertility is not as clear, however, it also can diminish lipido if it causes high prolactin.

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