I've had osteoporosis for about 8 years. I was put on Alendronate ( generic Fosamax) -- had no side effects from it, but my bone density was not improving. I eventually saw a bone specialist ( at the age of 56) - who ran some tests to rule things out. And that's when Celiac was ruled in. Unfortunately -- a perfect storm was happening all along. I had gone through menopause, had undiagnosed Celiac for who knows how long, was taking prednisone for all those "unexplained" rashes that I was getting. I am now three years gluten free. Last year, since the Alendronate was not making much of an impact, my doctor switched me to Prolia ( twice a year injection) I've had no side effect from it ( except to my pocketbook since it is quite expensive) but it is too early to have a bone density scan to see if it is working.
The one advantage to my osteoporosis diagnosis is that it kick started me into exercising. My past scans have been so bad -- osteoarthritis and degenerative discs in the back -- that they can't even get accurate results from the back. However -- all the exercising that I've been doing has totally relieved me from my back pain.