I saw it mentioned by Sara Meeks. She is an incredible expert on osteoporosis. She used it..along with her exercises when she found out she had osteoporosis! You can see her really interesting interviews ( I think there are 3) and videos of her exercises on the BOB AND BRAD (physical therapists) YouTube channel. Plus she gives out her contact information and she sends you lots of info for free. She had seminars etc. wonderful resource.
Wishing you much luck!