Does treatment for HYPERthyroidism turn it into HYPOthroidism?
Last week I was diagnosed with Hyperthyroisim. I’m on meds to lower my hormone levels and relieve the symptoms (tremors, heat flashes… etc). In a few months the doctor wants to treat me with the radioactive pill. I’ve read/heard that this pill removes the thyroid and that most cases (of people who get this treatment) goes into hypothyroidism. I know people with hypothyroidism and they are overweight and with diet/exercise its still impossible for them to lose. I’ve been slim my whole life, (I’m 23 tall and slim). I’m worried that after treatment I’ll develop hypothyrodism and become overweight and not be able to lose it. Does anyone know if this will happen? Anyone have experience or know of someone with this? I dont mind working out at all, but those I know with it can’t lose weight no matter what they do. (They’ve had hypo almost their entire life though)
Thanks
10 pts BEST ANSWER! 
No lynn, hypo slows down your metabolism and hyper (by definition) speeds it up. I’ve been slim all my life but I can’t gain weight, with this hyperthyroism, and I’ve even lost some time. I know someone who had hypo and gained 60 lbs in less than two months.
thanks for the answers everyone!
With hypo they should be losing weight I think you have it the other way around.
Hi. Not everybody with Hypothyroidism is over weight. I weigh 90 lbs., and i was diagnosed with Hypo a year ago. I weighed 105 lbs. when i was diagnosed, so i’ve actually lost weight since then, Nobody can tell you for sure if you will gain weight or not. I know a couple of people that have it, and they are not over weight either. You really have to be careful what you eat because it will be easier to gain weight when Hypo. I feel sick all the time, so i don’t have much of an appetite. That’s probably why i stay slim. I think if you’ve been slim all your life ( like i have ), you have a better chance of keeping your weight down. Good luck with your treatment <<<Hugs>>>
I have experience! I was treated with the radioactive iodine when i was sixteen. It did kill most of my thyroid, however i did not become hypo for about half a year. I started to gain a little weight and feel sluggish, so I got tested and put on medicine to get me back to normal. I have no trouble maintaining my weight, as long as you exercise and eat healthy, like normal, you should be fine.