Your body needs calcium to build and maintain strong bones. Your heart, muscles, and nerves also need calcium to function properly. Some studies suggest that calcium, along with vitamin D, may have benefits beyond bone health: perhaps protecting against cancer, diabetes, and high blood pressure.

https://www.hsph.harvard.edu/nutritionsource/calcium/#:~:text=Calcium%20is%20a%20mineral%20most,heart%20rhythms%20and%20nerve%20functions.