If you believe that the treatment comes at too high a cost, you are always free to refuse it. This is not being forced upon you by "conventional medicine." Rather, "conventional medicine" has provided you with options, and this is the one that you have chosen.

Hey Bright Star anonymous idiot: that IS the treatment for an over-active thyroid. Do you think your physician just made this up in order to harm you?

Think how many little kittens you can own, and how much sex (even with the help of Conventional Medicine, into your 90's), if you are still alive later!