Posted by raybakes on September 26, 2004, at 12:50:40
In reply to Re: TSH levels and thyroid illness? » raybakes, posted by karaS on September 25, 2004, at 19:07:17
Hi Kara, looked at Simus' thyroid test results on one of the threads, and they don't seem too bad do they?
I was wondering if, of the T3 result mentioned, what proportion of T3 was reverse T3? (when the deiodinase enzyme fails to take off the right iodine from T4, due to selenium or zinc deficiency or inflammation). Some research states that reverse T3 blocks the action of T3, so even though T3 is 'normal' a person will still get some or a lot of symptoms.
Simus' free T4 seemed to be on the low side of normal, and as it's free T4 levels that switch off TSH, maybe that's why TSH is on the high side of normal. I wonder if there is too much thyroid binding globulin lowering free T4 (maybe estrogen?). and as free T4 is slightly low it might mean the thyroid is stuggling too, because even if TBG is high, a healthy thyroid should be able to raise T4 production to raise free T4.
I'm only speculating...let me know what you think!!
Ray
poster:raybakes
thread:359642
URL: http://www.dr-bob.org/babble/alter/20040901/msgs/395298.html