I can't find any research that proves that TSH has a direct effect on bones. In fact there is a piece of research that shows that TSH does not have ANY effect on Bone Mass Density.
Thyroid Stimulating Hormone and Bone Mineral Density:
Evidence From a Two-Sample Mendelian Randomization
Study and a Candidate Gene Association Study
Nicolien A van Vliet,1 Raymond Noordam,1 Jan B van Klinken,2 Rudi GJ Westendorp,1,3
JH Duncan Bassett,4 Graham R Williams,4 and Diana van Heemst1
There is a very recent pieced of research that shows that EXCESS TSH has a negative direct effect on the heart.
Thyroid stimulating hormone directly modulates cardiac
H. Alonso a,1, J. Fernández-Ruocco b,1, M. Gallego a, L.L. Malagueta-Vieira c, A. Rodríguez-de-Yurre a, E. Medei b, O. Casis a,⁎
It seems to me that the evidence so far is that it is mostly the excess or lack of T3 that causes Atrial Fibrillation or Osteoporosis. Now we need to factor in the excess of TSH and together with the lack of sufficient that contributes to AF. Not the lack of TSH.
It seems to me that the doctors are so indoctrinated that TSH tells us everything that they cant see the wood for the trees. They very rarely consider T3 for anything, including well being and that the real cause of AF or OP in these circumstances is an excess of or lack of the correct amount for the individual patient of T3 - mostly.