Because excess calcium in the body passes through the kidneys, researchers used to believe eating less calcium would help reduce the risk for developing this type of stone. New information indicates just the opposite. Oxalate, which is found in tea, nuts and several fruits and vegetables, is believed to be more influential in kidney stones formation than calcium. Too little calcium in the diet may actually increase the amount of oxalate available for forming kidney stones. There are several d ifferent kinds of kidney stones and different factors that affect their formation.
Experts recommend checking with a physician before making any dietary changes.
Researchers are also exploring possible connections between calcium and the prevention of breast and colon cancer, and the lowering of blood cholesterol levels. But it doesn't mean avoiding all calcium-containing food entirely. Or they may choose other sources of calcium such as fortified grains, fruits and vegetable instead of dairy foods. In addition, enzyme products can be purchased and added to dairy foods to make them more digestible. And lactose-reduced milks are also available in most markets.