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@bluebonnet242
It is normal for the tsh to lower when upping t3 or t4; the pituitary gland senses the higher T3 levels, etc. and reduces its TSH production; this is part of the normal feedback loop. A normal TSH doesn't automatically mean low T3/T4 levels are fine.
Priorities are usually the t3 and t4 levels not the tsh, but there is a balancing act which your doctor will be trying to reach. Remember that the tsh reflects the action of the pituitary in response to the ups and downs of your t3 and t4.
T3s can especially be a problem because a low t3 is tied to depression.
In my case, I prefer a higher t3 and though we ck the tsh it is not as important to me. But I am prone to t3 depression levels so my case may be entirely different from yours.
I have taken thyroid meds for years, and I have gone from osteoporosis to normal bone readings, DEXA, with normal bone microarchitecture, TBS.

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Replies to "@bluebonnet242 It is normal for the tsh to lower when upping t3 or t4; the pituitary..."

@kathleen1314 thanks for the comment. I’ve been taking NDT since 2008. I was also told TSH would be suppressed because of the t3. My tsh has been suppressed below 1 since starting it while trying to get my free T3 and free T4 in the right range. What would a good level of suppression be? If you have any articles handy, I would love to see any recent articles or trials you may have regarding overly suppressed TSH and the effect it may or may not have on bones.

Unfortunately, my osteoporosis continued to get worse and I had a hip fracture 2 years ago. I am now on Tymlos. Of course, we all have different health issues that may contribute to osteoporosis.

May I ask how suppressed your tsh is? I’m happy that your thyroid meds are working for you and that you have been able to improve from osteoporosis to normal! Not an easy feat.