Doctors used to tell their patients with kidney stones to reduce their intake of calcium.
Kidney stones are among the most painful conditions that affect people.
The most common type of stone is made of calcium oxalate, which is formed when calcium combines with oxalates. People who are likely to suffer from oxalate kidney stones are those who have huge amounts of oxalates in their urine. Dietary oxalates are found in most vegetables, grains and beans, but it would be highly unhealthful for a person to eat a diet that is low in vegetables, whole grains and beans, so doctors often recommend that patients with kidney stones restrict their intake of calcium found in diary products, bones of fish and nuts. Recent research shows that restricting calcium increases a person's chances of getting kidney stones. When you take in adequate amounts of calcium, the calcium binds to oxalates in food to form calcium oxalate stones in your intestines which pass from your body.