Can hypothyroidism cause you to become less fertile?

Affects ovulation: Yes, hypothyroidism can affect both fertility as well as affect pregnancy outcomes. Hypothyroidism can affect ovulation which in turn affects capacity to get pregnant. Also once pregnant there is an increased risk of miscarriage. Therefore it is best to correct thyroid disorders ahead of attempting pregnancy.

Yes: The thyroid is like the idle speed on your car, and if it is set too low or too high the car does not run well. This is also true for the thyroid and the body. An underactive thyroid can certainly be associated with abnormal cycles and impaired ovulation.

Yes: Untreated hypothyroidism in a female can absolutely reduce or even eliminate your natural fertility potential. The specifics vary with how severe the disorder. The good news is that in most cases, treating the condition fixes the fertility problem as well.

Yes: In some women, even mild hypothyroidism, with levels in the 'normal' range, can cause infertility. If you have symptoms of hypothyroidism a small dose of thyroxine can sometimes relieve the symptoms, improve fertility and not be dangerous to you or the baby if the blood level is monitored properly. Before, blood tests were available, most women with infertility were given thyroid and it worked.