Alycia,
I don't see the connection with the foods you mention. There are some good reasons to be moderate in consuming the higher fat foods, but bone damage isn't one of them.
If you are concerned about osteoporosis, you may find this article from a WFPB medicine site interesting:
https://www.pcrm.org/health-topics/healthy-bonesI think that if you are following the McDougall plan, along with getting some moderate exercise, you are doing the best thing you can to protect your bone health.