What are your waking and mid afternoon body temperatures.
Restaurants typically do not use iodized salt, same for “prepared meals”.
If your thyroid enlarged, asymmetrical or lumpy?
Iodine deficiency can lead to functional hypothyroidism and the accompanying high TSH can cause a progression to hyperthyroidism in some cases after a long time.
fT3 and fT4 are much more useful. T3 and T4 include varying non-functional amounts tied up with thyroid binding globulin.
I do not know how to use these or where in the ranges would be optimal.
T3 Uptake 31 [24-39 %]
Free Thyroxine Index 2.9 [1.2-4.9]
Ah, gotcha. Nope, no thickness in my neck there. I remember my doc feeling my neck there during last physical. He made no comments about it. My neck hasn’t changed in appearance at all since I’ve been an adult.