Re: L-Tyrosine question
Wow, Meep, you blew my mind. I never checked into the chemical structures before. But, while similar, T4/T3 etc. and Tyrosine actually differ by more than just Iodine. My chemistry is a bit rusty, so I don't know if I'm stating this properly but the thyroid molecules also have an additional hydroxy-phenyl group (linked with an ether bond in T4, but without the extra oxygen linkage in T3).
I wonder if the body can synthesize some of its T4 from Tyrosine if it can glean the needed components from other things in the body. Fascinating! I'm so glad you posted about this connection.