Alive Bone Support has 9mg strontium. The therapeutic dose is 680mg. So that is a token amount that may not affect either bone density or DEXA's.

HRT will be a factor in perserving or improving bone density.

I agree that the starting point matters. @callalloo you may have more success "naturally" because you do not yet have osteoporosis. Even with the most aggressive treatments with all medicines available, great diet, exercise and proper supplements, I will never again get to where you are.

I would remind people with significant bone loss that it is symptomless, you can feel strong, and then fracture, even fracture multiple vertebrae. Meds are the only way to address this kind of bone loss quickly enough to make a difference. After meds, THEN try natural approaches, in my view.