All the articles on this site were researched individually and therefore only cover a limited scope. Since I’m not a doctor, I don’t have the information you’re looking for. But you might try asking Dr. Weil. He has a form on his site to ask specific health questions. It’s located at http://www.drweil.com/ under the “Forums” tab. You can also ask at the “Ask Dr. Weil” tab.

Also, he’s already answered a few questions about natural treatment of thyroid problems in his Q&A at the “Ask Dr. Weil” tab. They weren’t the same questions you’re asking, but you might find his answers helpful anyway.

I hope that helps and I hope you feel better soon!