Yes. Adequate calcium and vitamin d intake are important. Numerous studies have shown that estrogen replacement therapy will significantly decrease bone mineral loss. For women who can not or will not take estrogen there are a number of effective medications specifically intended to decrease bone mineral loss.
Osteoporosis. I agree with what my colleagues have already mentioned. In addition to it, weight-bearing exercises like brisk walking may also help. Aside from adequate vitamin d levels, supplements like strontim and vitamin k2 may assist in rebuilding bone mass. Avoid sodas and drinks with phosphoric acid. They rob your bones of the much needed calcium.