Hi zaa, I found the prednisone stimulated my appetite - so I've gained some weight back. I've always been careful about what I eat and read about people who gained so much weight on prednisone that they got diabetes, etc. - so I'm still careful. My skin was sagging too. I started back doing strength training for osteoporosis with some of Carol Michael's workouts and I walk for an hour about five times a week. You can look up Carol Michaels on Youtube. My skin isn't as saggy anymore. I bought a vibration plate exercise machine as there are studies showing that whole-body vibration therapy can increase bone density. Just been doing that for a couple of weeks. Also added a probiotic supposedly good for bone density, L. Reuteri and Vitamin K1 in addition to the other supplements I take. Thanks for the references to the books, I'll check them out. By the way, symptoms of my PMR were incredible pain and stiffness, my whole body from the neck down. They went away after nine or ten months, but then the GCA set in. Just try not to get discouraged. I feel so much better now. I hope you do too.