I'm with purplekate28...still hypo more than 6 months post op but down 20 lbs....I had a few months in there where my levels were good and I felt awesome....Hang in there, this is the worst part. I was so very depressed during the RAI isolation time...couldn't hug my kids for 2 weeks and then couldn't hold them for any real length of time for a week after that. The hardest part, I think, of any disease is the loss of control. I didn't lose my job but I wasn't working much for 3-4 months and my finances were affected, my marriage was strained because we were so stressed and then they took the one thing I had some control over away, my kids. I was really, really angry at the time. A good antidepressant might do you some good and depression is also part of being hypo. Hang in there, it WILL get better. Unfortunately it just takes time.
I had TT in October 2007 and RAI in November. I'm actually DOWN ~10 lbs. My appetite hasn't been the same since the surgery and RAI. We are still working to get my synthroid dose right, but as of the last check (4 wks ago) I was still very hypo -- (and yes, still losing weight!)
RAI is a strong but very effective treatment. It takes a long time for your body to balance itself with hormone replacement therapy, I had thyroid cancer and was successfully treated with a large dose of RAI. The weight gain is mostly water retention. I know quite a few people with the same thyca treatment and ALL gained weight. Exercise and a good healthy diet and a thryoid hormone replacement therapy will bring your weight back to a more normal level. If you starve yourself your body won't heal properly.
It is a long journey to recovery but a balance is not far off!!
Good luck
200 300 calories is not healthy. it is better to eat 6 small meals a day like lots of frruit and veggies and lean protiens. and exercise will help you keep off the wweight and feel better. I take levvothyroixine and I am doing great. Iam loosing weight and life is good.
Love Venora