Can salt intake explain racial differences in bone and blood pressure health?

This study investigates whether people of different racial and ethnic backgrounds process calcium and sodium differently when eating high versus low amounts of salt. Healthy adults who are Black, White, Hispanic, or Asian will follow controlled diets with either typical Western salt levels or lower recommended levels, and researchers will measure how much calcium their bodies absorb and how much calcium and sodium they excrete. The goal is to understand if current dietary advice, which often promotes milk, may need to be personalized to better protect against conditions like osteoporosis and high blood pressure.