I am no expert in this area, but was glad to see what magnamater posted. I have had hard to control thyroid problems for over 15 years. (also undiagnosed for the first few). This is my first time trying lc and within days I felt like a new women. Most of my thyroid symptoms are better if not gone, praise the Lord! As for my hair, this is the first time it has stopped falling out and both my hair and nails seem to be growing very quickly. Never had that in my life. Magna......I wish I heard that years ago!