Is blood in urine always cancer? Here's what you need to know

Noticing blood in your urine—medically known as hematuria—can be an alarming experience. It often prompts people to fear the worst, such as cancer. While it is indeed a significant symptom that should never be ignored, it’s important to know that not all cases of blood in urine are caused by cancer.Studies have shown that only around 27% of patients who present with hematuria are ultimately diagnosed with cancer after further evaluation. The remaining cases are often due to a wide variety of benign or non-cancerous causes, many of which are treatable and less serious. 1.Medications: Some drugs can alter urine color, giving it a red or reddish-orange hue that may resemble blood. For instance, Pyridium, used to ease urinary pain, and Rifampicin, an anti-tubercular medication, can both change the color of urine without any bleeding actually occurring.2.Diet: Consuming foods high in betanin, a natural pigment found in beetroot and blackberries, can cause urine to appear red, a harmless condition known as beeturia.3.Exercise-Induced Hematuria: In some individuals, especially athletes, strenuous exercise may cause temporary blood in the urine due to minor bladder or kidney trauma. This usually resolves on its own.4.Urinary Tract Infections (UTIs): A simple UTI can lead to visible or microscopic blood in the urine. Other symptoms may include burning during urination and increased frequency.5.Kidney or Urinary Tract Stones: These can cause irritation or injury to the urinary tract lining, leading to bleeding.6.Glomerulonephritis: Seen particularly in children and young adults, this is a kidney condition involving inflammation of the glomeruli—the tiny filters in the kidneys. It can cause cola-colored urine, proteinuria, high blood pressure, and swelling of the face and feet.7.Benign Prostatic Enlargement (BPH): Common in older men, BPH can occasionally cause hematuria due to increased pressure or minor injury in the urinary tract.8.Trauma and Myoglobinuria: Crush injuries, prolonged surgeries in unusual positions, or extreme physical strain can lead to the release of myoglobin—a muscle pigment—into the bloodstream. When filtered by the kidneys, this pigment may cause the urine to appear red.Hematuria can be due to various causes—some harmless, others more serious. While cancer is a possibility, it is not the most common cause. Nonetheless, the presence of blood in the urine should always be evaluated by a urologist to rule out malignancy and ensure timely treatment of any underlying condition.Early attention can make all the difference, especially when it comes to curable conditions like early-stage cancers. If you or a loved one notices blood in urine, don’t panic—but don’t delay a visit to your doctor either.Dr. Hari Prasad N, Consultant – Urology and Renal Transplant Surgery, Manipal Hospitals, Vijayawada