Calcium oxalate crystals in the urine are the most common cause of kidney stones. Learn where they come from, how to prevent them, and how to remove them.

Calcium oxalate crystals are shaped like dumbbells or envelopes. They’re colorless and can be found in healthy urine. ... Sediment, or particles, in your urine, can make it look cloudy.

Urine crystals form when too many minerals are present in the urine. ... According to the National Kidney Foundation, calcium oxalate stones are the most common type of kidney stone.

While they are not inherently harmful, oxalates can combine with calcium in the urine, leading to the formation of calcium oxalate stones — the most common type of kidney stone.

Excessive consumption of iced tea has been linked to renal failure caused by oxalate nephropathy in a case study appearing in the New England Journal of Medicine. In the article, a 56-year-old man ...

The urine sediment was remarkable for the presence of abundant calcium oxalate crystals. He did not have a personal history of kidney stones or any family history of kidney disease. He reported ...

When that happens, the calcium and oxalate form crystals. At the same time, the urine may lack substances that prevent the crystals from sticking together, creating an ideal environment for kidney ...