There are two things you need to do to prepare your body for RAI treatment.
The first thing is to go on a low-iodine diet. Why? Because your thyroid lives on iodine and because they want to starve any of those bits of thyroid left over from surgery so they will suck up the iodine that will be given to you. Since the iodine is radioactive, it will kill the rest of the thyroid remaining and any cancer that is still there. The low-iodine diet is challenging. They gave me a list of what foods to eat and what foods to avoid on the diet. Hmm...on the foods to eat was lean meats, vegetables and fruits, coffee, tea and alcohol. I find it interesting that alcohol was okay but who is complaining. In the foods to avoid was iodized salt, dairy (yikes, no cheese), seafood, eggs and chocolate (not a complete list but you get one at https://www.thyrogen.com/patients/Low-Iodine-Diet.aspx). I decided to be vigilant in finding some comfort foods I could eat. So off to the grocery store I went in search of foods with no salt. Man, was I surprised by what I found. Everything has salt in it and I mean everything you would normally buy each week. Thankfully, there was Trader Joes to the rescue. They even mark some of their foods with little salt shakers meaning, low to no salt added. I also found a great site that listed one man's diet plan for two weeks at http://mylowiodinediet.blogspot.com/. I am not going to say it was easy being on a low-sodium diet but I will say it is doable considering it was aiding in getting rid of the cancer.
The second thing you do to get ready for RAI treatment is to get 2 shots of Thyrogen on 2 consecutive days. More on that in the next couple of blogs.