@sue417 I had osteoporosis, pretty severe, and 3 spinal fractures when I went on letrozole. Most patients also go on Reclast but my doctor did not want to do that due to my afib (a risk that has since been debunked). I did letrozole for 5 years. Then Tymlos restored my bone density to a level better than before cancer treatment.

Some people with osteoporosis do tamoxifen, which doesn't affect bones and SERMS like that may help to maintain density at least.

I wonder why your friend's rib cage is collapsing on an aromatase inhibitor. Is she not on Reclast?

Tinnitus comes from the brain. I wonder why HRT helped. I am curious. I thought I would go crazy with new tinnitus a few years ago but my brain had adapted. Hope that helps you too.