Low calcium levels can lead to osteoporosis or brittle bones. Children with low calcium levels may not grow as well as they should. Age and gender determine the recommended daily level of calcium.
Calcium is needed for healthy bones. It is found in a variety of foods, including dairy products, fish with soft and edible bones, such as mackerel, and green leafy vegetables. Many products are fortified with calcium, including cereal, soy products and milk substitutes. The body needs vitamin D to absorb calcium. This is created by the skin when it's exposed to the sun. It is also found in eggs, fatty fish and fortified foods.