Chick
I dont' think most of us are getting hip protectors, this thread has evolved into a help thread for people with Osteoporosis/Osteopenia diagnoses.

I have started lifting weights 3x a week and doing stairs 15+ minutes 5 days a week AND walking a mile a day 5 days a week.
All of this on top of bike riding, you're right, cycling is not weight bearing, but it improves stamina, and makes it easier to do all that other stuff.
oh yeah, and taking vitamins.