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Kidney Stones FAQs

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One in 10 people develop kidney stones, and studies show the condition is on the rise. Learn more about kidney stones and how to avoid them.

How do you get kidney stones?

Urine has high levels of minerals that can form stones in the kidneys. The stones start small but may grow large enough to fill spaces within the kidneys. Some stones don’t cause any issues. But kidney stones can get stuck in the ureter, blocking urine flow and causing severe pain.

What do kidney stones feel like?

Symptoms include sharp pain and cramping in the back and side, which may move to the abdomen or groin. The pain starts suddenly and comes and goes while the body tries to expel the stone.

Other signs include:

  • More intense urination urges
  • Increased frequency
  • A burning sensation during urination
  • Dark or red urine
  • Nausea and vomiting
  • For men, pain at the tip of the penis

How long does it take to pass a kidney stone?

It depends on the stone’s size and location. Smaller kidney stones take about a month to pass, while larger stones take up to a year and may require medical treatment. Stones at the end of the ureter near the bladder often pass faster than those near the kidneys.

How can you avoid kidney stones?

  • Stay hydrated – Water helps you urinate regularly and keeps minerals from settling in the kidneys.
  • Eat calcium-rich foods – Diets low in calcium increase oxalate in the urine, which helps stones form.
  • Cut the sodium – Too much salt in the urine prevents calcium absorption, causing stones to develop.
  • Limit oxalate-rich foods – Foods that bind with calcium in the urine, such as fruits, vegetables, nuts, seeds, legumes and grains, can cause kidney stones.
  • Eat less animal protein – Animal protein increases uric acid, which may cause kidney stones.
  • Avoid vitamin C supplements – Vitamin C converts to oxalate in the urine, increasing the risk of kidney stones.

Can kidney stones cause a UTI?

Yes, blockages in the urinary tract, such as a kidney stone, can cause UTIs.

Can you die from kidney stones?

Kidney stones that can’t be passed may cause severe blockages, infection and critical illness. Share any concerns with your Mercy doctor.

Find a Urologist

Mercy has experienced urologists across most of our communities. 

Find a urologist near you.