I had a bone density scan a few years ago which showed I had osteopenia (a pre-osteoporosis condition). My doctor warned me not to go on any of the medications for osteoporosis because of the risk of more damage to my jaw and teeth. He recommended calcium, vitamin D, diet and exercise. From what I understand there are different types of calcium � he said to use calcium citrate +D such as Citracal.
A number of my female older relatives have had osteoporosis and I guess I can blame osteopenia on heredity and ORN on the radiation.

By the way, I also have issues with my jaw because of the radiation (loose teeth that were removed recently and jaw pain). I�ve had HBO twice because of this.
Good luck! Please let me know what your doctor recommends.