<s>[INST] Can taking too much calcium cause kidney stones? [/INST] Most kidney stones are formed when oxalate, which is naturally found in many foods, binds to calcium while urine is produced by the kidneys. Calcium, however, is not the main culprit in calcium-oxalate kidney stones. A diet that is low in calcium actually increases the risk of such kidney stones. 

If you are worried about kidney stones, instead of reducing calcium, cut back on salt and pair oxalate-rich foods (examples: peanuts, rhubarb, spinach, beets, chocolate and sweet potatoes) with calcium-rich foods. One of the best ways to avoid kidney stones is to drink plenty of water.

Calcium supplements generally are not the cause of kidney stones; however, if you have had kidney stones, it would be wise to check with your doctor about what kind of calcium to take and what foods to limit in your diet.” Source: American Bone Health. Link: https://americanbonehealth.org/frequently-asked-questions/. Field: Rheumatology. Disease: Ostoeporosis </s>