bipolar medication vs. hypothyroid

I have been diagnosed with bipolar disorder, and I have been placed on wellbutrin, lithium and xanax.  I have also been diagnosed with graves disease, now they have found that after getting radiation for hyperthyroid, I am now hypo after 8 months....could this be related to the medication that i just started for the bipolar?  thank-you...misti

[HFHS MD - RG]

Dear Misti,

There are a number of causes of hypothyroidism. The treatment of hyperthyroidism with radiation may cause hypothyroidism, a not uncommon occurrence.

The use of lithium may also cause hypothyroidism in 2-15% of patients, and goiter in 3-4% of patients. This disorder affects women more than men. This condition is monitored by checking the patient's thyroid status prior to beginning lithium and every six months.  If this complication occurs, it is easily treated with thyroid replacement.

In addition, hypothyroidism can cause increased cycling in bipolar disorder, so your physician will very carefully  monitor it. A consult with your treating physician may help you find the cause of your hypothyroidism.

The information provided in this Forum is presented for general educational purposes only. Specific questions you have pertaining to your health should always be directed to your personal physician or you may call Henry Ford Behavioral Health at(248) 689-7476 for an evaluation.

     I wish you the best,

     HFHS MD - RG

     *Keyword: hypothyroidism