I wonder why she never mentioned phosphorus. Most calcium supplements are calcium carbonate, but you cannot build bones without enough phosphorus in the correct proportion to make calcium phosphate (another important issue for better managing health that is not being done correctly by the medical establishment). So the excess calcium in supplements will be excreted, or worse - deposited in arteries etc. When you eat meat, poultry, dairy, bones and bone broth, you are getting all the minerals needed to build bone.