Spinal t-score of =5.2 just diagnosed. with proper exercise, diet, & medication is it possible to return to ostopenia level or better?

Yes: You can rebuild bone with a proper regimine. The body not only needs calcium but vitamin d3, magnesium, and vitamin k2m7 for strong bones.

Significant: A T-score of -5.2 is fairly severe osteoporosis. It can be improved, but, if possible, please work with a physician who specializes and/or has plenty of experience with this process. Depending on your state of health otherwise, you'll probably want to do a combination of proper nutrition, exercise and medication.