Vegsource have an
article about what is real situation with calcium:
So far, all the hype about the importance of high calcium intake
to build strong bones seems to be just that -- hype.
Research points in other directions.
The average daily calcium intake for South African blacks is 196 mg whereas the daily calcium intake for African-Americans is more than 1,000 mg. Yet the hip fracture rate for African-Americans compared to South African blacks is NINE TIMES GREATER! [Calif Tissue Int 1992;50:14-18] And those countries with the highest calcium consumption turn out to be the same ones with the highest rates of osteoporosis.