I'm going to have my thyroid removed in 5 weeks due to cancer. I understand that after the surgery, weight gain is inevitable. I exercise and try to watch what I eat now. Is there anything I should be doing now, as far as the right foods to eat or not and so on, to hopefully not to gain too much weight? I'm nervous about the whole thing and the word cancer is totally freaking me out. I am 54 years old, been almost through menopause, and I take hormone replacement drugs. Will this affect anything with the drugs I will be taking after thyroid surgery?