My mother has osteoporosis, Vitamin D deficiency, and fibrous dysplasia and is in her 60's. She has fractured multiple bones in the past. She only recently went Paleo with raw dairy, Vitamin D supplementation, and Carlson Cod Liver Oil, etc.
Wolf has a testimonial for osteopenia (less severe than osteoporosis) from a 43 year old improving with Paleo but no numbers for specifics. http://robbwolf.com/2012/05/14/reversing-irreversible/
I was curious what hope there was for her.