I'm 'at risk' of osteoporosis and have a DEXA scan every few years, so far so good but I've not been on steroids. The advice I've been given is to make sure you get plenty of calcium, preferably from green leafy veg - they dont know about the Crohn's yet!, and do lots of weight bearing exercise - the more the better. Taking calcium of itself is not particularly helpful.
I'd have thought the doc's that ordered the scan should have given you the appropriate advice considering your medical history. If not, talk to your GP?
