Researchers studied almost 300 patients from two U.S. hospitals and found that 40% of them had proteinuria, an early sign of kidney disease. The majority of patients with proteinuria were not being treated for the condition. Researchers also found that 41% of patients with high levels of protein in their urine reported taking nonsteroidal anti-inflammatory drugs that can harm kidney function. The findings were presented at a meeting of the National Kidney Foundation.
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