Kidney stones may increase the risk of heart disease, stroke

A kidney stone is an accumulation of waste chemicals in the kidney - calcium, oxalate, cystine, phosphate, xanthine and irate - that become a hard mass. Normally, these chemicals are passed out of the body through urine, but they can build up if there is not enough liquid to get rid of them.

Once these stones are formed, they either stay in the kidney or move down the urinary tract into the ureter. Smaller stones can be passed out the body in urine without causing major discomfort, but larger stones may become stuck. Urine can build up behind the stones, causing a lot of pain.

Study results found that patients with kidney stones are at 19% higher risk of coronary heart disease and 40% higher risk of stroke.