I had to chase up the results of my BD scan. Looks like I have the same density as a 60 year old woman. Damn steroids 
'Below average at the femoral neck' and 'More below average at the lumbar spine'. Still acceptable though.
Should I start taking [wiki2="Calcium"]calcium[/wiki2]? Will that just cause problems elsewhere?
edit: I should probably have put this in the 'Treatment' forum. Any mod out there fancy moving it for me?
