In the late 70's my husband noticed a minor swelling in my neck when he looked at a photo of me! I didn't notice a thing BUT I was experiencing a huge surge of energy which was atypical for me but very enjoyable! Turned out it signaled a hyperactive thyroid which needed to be taken care of. So, I swallowed a dose of radioactive iodine and have been on thyroid medication ever since. TSH levels taken every 6 months which sometimes leave me needing me to adjust the dosage of the thyroid medication I take. No biggie. My J-pouch was created in 2001 with takedown in 2002. No additional problems with my levels of thyroid hormone after J-pouch creation. I don't even miss having a thyroid gland. Guess I could say the same about my colon! Best wishes, CT!!!! I know you'll do just fine.