Well, I in no way know all there is to know about
thyroid function, but I've never heard of that. When looking it up, I did find that the thyroid is a major regulator of metabolism
www.ncbi.nlm.nih.gov/pmc/articles/PMC3169868/, but that's all. Sorry, I've had too many doctors say things that weren't quite right, so I have a tendency to check on most everything.
When our bodies are so ill that most anything we do makes us react, you must be careful!! I'm encouraging you to only research this and come to your own conclusions. We can offer opinions, and show you articles, but it's ultimately up to you to protect yourself. Something you have to do in order to heal.
When starting anything, we have discovered that if you start on a very low dose (no matter what dose you will end up with), and only start one thing at a time it really helps. Many find that they need to wait several days to be sure that they won't react before changing anything else.
Working with a good LLND should be a great experience, as this is something they should understand well.
Keep on learning, asking questions and please remember to let us know how your appt goes!!