Years ago, a friend on posted this on Google+. Is it true? That I don’t know. I'm not a doctor, I’m an aerospace engineer and computer scientist. ;)
One thing I can tell you is that when my thyroid was failing with Hashimoto’s, I did some crazy things, even ending up in Haines, Alaska on a whim. And I can also tell you that taking L-tyrosine really helped later during the thyroid failure process.