My Cancer Doctor Suggests I Start Using Prolia Because My

My cancer doctor suggests I start using Prolia because my dexascan showed osteopenia but the previous scan showed the same thing. I have been taking calcium supplements daily since the previous scan on the advice of my primary care physician. I am 3 years cancer free (I had breast cancer in 2015 & had a lumpectomy not mastectomy). What are your views on Prolia?