What does calcium do? Calcium is needed to build and maintain strong bones.es. The heart, muscles and nerves also need calcium to function properly. Some studies suggest that calcium, along with vitamin D, protects against cancer, diabetes and high blood pressure.
How much do I need? Adults need at least 1000 milligrams a day of calcium. For women over 50 and all adults over 70, 1200 milligrams are recommended.
Are supplements recommended? Food is the best source of any nutrient, and some plant foods are rich in calcium. Include a variety of calcium-rich foods in your daily meals. Talk to your health care provider if you have doubts about whether you need a supplement in addition to the food sources.