The provided embodiments are based in some aspects on the demonstration herein of a role for gastrin in regulating the aging gut-ovary axis and effects of targeting gastrin activity in reversing gastrin-mediated bone loss. Provided are methods, compositions and agents, including gastrin antagonists, for treatment, amelioration, and prevention of bone diseases and conditions. Methods for treating a bone disease or condition associated with hypergastrinemia in a subject in need thereof may comprise administering to the subject at least one dose of a therapeutically effective amount of a gastrin receptor-targeting agent, thereby treating the bone disease or condition associated with hypergastrinemia.
