Harvard Men's Health Watch

Blood in the urine: What does it mean for your health?

There are numerous possible causes of hematuria — blood in the urine, including kidney disease, injury, certain cancers, urinary tract infection or prostate disease. Vigourous exercise can also cause hematuria known as "runner's hematuria" or "10,000-meter hematuria." Regardless of the cause, prompt testing is required.
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