Factors that can cause
urinary blood, known medically as hematuria, range from strenuous exercise,
urinary tract infections and an enlarged prostate to kidney or bladder stones, kidney disease, and, occasionally, kidney cancer or bladder cancer.
* Foods. Beets, blackberries and mom's rhubarb pie can turn urine red or pink.
* Medications. Certain laxatives — Ex-lax is an example — can cause red urine.