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Is high TSH linked to Irregular Menstrual cycle?

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I have been having irregular menstrual cycle(once in 2 months) for the past 1 yr and upon consulting the doctor she had prescribed a Thyroid test. The results showed that my Triiodothyronine(T3) level was 1.04 ng/ml, Thyroxine(T4) level was 5.12 ug/dl and TSH was 5.60 mlU/ml. The doctor said that my thyoid level was a bit high and prescribed THYRONORM 25mg, to be taken everyday. I have been taking this for past 70 days. Do I still need to continue taking them? I have another 30 tablets left to be taken.

Also, is high TSH anyway linked to my irregular menstrual cycle. I'm planning to get pregnant, will high TSH effect this? Pls note that my doctor has adviced me not to try getting preganant till I complete the Thyronorm course.


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replied August 4th, 2006
Infertility Answer A1322
Thyronorm 25mg is used for treating HYPO-thyroidism. According to my data, your T4 and T3 levels are normal and only the TSH levels are a little above normal. A small increase in TSH doesn’t cause menstrual irregularity. I recommend you consult an endocrinologist because there is probably nothing wrong with your thyroid gland. You can examine all the hormones involved in the ovarian function (FSH, LH, estrogen, progesterone, prolactin, thyroxin, testosterone and DHEA) and request a vaginal ultrasound as diagnostic tools.
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