Lots of links to follow when I get time!!
The next link needs the sound turned on, it's a 1 1/2 hour "Talkshoe" interview between Janie and Val which covers the topic of RT3.
Broda Barnes, a pioneer of the use of temperature as a marker for hypothyroid
This link is a classical article by Mary Shannon on body temperature and the female cycle plus the thyroid implications of temperature. I came across this in 1999 and it was one of the things that started me along a route to health