The recommendation was "general lifestyle advice indicated", and while my diet is fine, I think I am going to have problem with weight bearing exercise, eg walking, as I use crutches and really can't go far.
WRT to "weight bearing exercise" - the current recommendation for OP risk reduction is not so much weight bearing as was thought until about 10 years ago - rather it is "resistance exercise".
Just a flying visit through KA of late, so don't have free time to go hunt studies for you...
In essence - it has been found that it is the action of the muscles contracting hard on the entheses (insertion sites) during resistance exercise that leads to trabecular reinforcement within the bony structure.
Go talk to your local PT about getting some Therabands and get the PT to design a programme of exercises modified for your specific needs / capabilities. Lots of bridging and modified 'planking' are good for both core strength and lower limb OP risk reduction. Don't neglect the upper limb bones - you have a whole set of hand weights in your pantry.....and all this FREE OF CHARGE and appropriate in any weather!
Gotta fly - despite my better judgement, I have taken in a stray - well, not really - I have a French exchange student staying with us for 2 months - a temporary sister for my own DD.