so, that's my reading of this - what seems to cause osteoporosis is neither a specific reduction in androgens, nor a specific reduction in estrogens, but a reduction in total sex hormones, overall. both men and women should be able to use both sex hormones to build bone density. while it is reasonable to treat ciswomen with estrogen and cismen with testosterone on the event that natural hormone production ceases, it doesn't seem to be necessary - the opposite treatment should be protective of osteoporosis, one way or another.

and i shouldn't worry about it.