Is intermittent (about once a week) slightly reddish-orange urine a sign of prostate problem, if I have no pain and no difficulty to urinate? Can it be the spices in Ketchup, or tomato sauce in beans, or vegetable juice? I gave samples of urine and blood this morning, but my urine was plain yellow and did not seem to contain traces of blood, after fasting over 12 hours. I am 68 and had this for the last two seasons. In the Winter I do a lot of shovelling of snow. I have a good mind to reduce my tomato intake, and exercise more. What do you think?