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Health Effects

can drinking alcohol cause blood in urine

Quick answer

We found no official page that links drinking alcohol to blood in the urine. NIDDK lists infection, stones, an enlarged prostate, kidney disease and cancers among causes, and does not mention alcohol. Any blood in your urine, visible or not, needs a doctor's visit.

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In this article
  1. What hematuria is
  2. Causes NIDDK lists
  3. Where alcohol fits
  4. What to do

What hematuria is

Hematuria means blood in the urine. NIDDK describes two types. Gross hematuria is blood you can see: urine looks pink, red or brown. Microscopic hematuria cannot be seen and is found by a urine test. Microscopic is the more common type and usually causes no symptoms.

Causes NIDDK lists

  • Infection or inflammation of the bladder, kidney, urethra or prostate
  • Urinary tract stones
  • Enlarged prostate (BPH)
  • Injury, vigorous exercise or sexual activity
  • Endometriosis
  • More serious causes: cancer of the bladder, kidney or prostate, blood-clotting disorders, sickle cell disease and kidney disease

Where alcohol fits

The NIDDK page never mentions alcohol, so we cannot say drinking caused it. We also cannot say alcohol is harmless. Do not assume a drink is the reason.

What to do

A health professional finds the cause with your history, an exam and a urine test. Blood clots can be painful to pass. Do not wait to see if it clears: call a doctor, and seek urgent care if you have severe pain, fever or cannot pass urine.

This is general information, not medical advice.

People also ask

Can heavy drinking cause blood in your urine?

We found no official page that says so. NIDDK's list of causes does not include alcohol. See a doctor to find the cause.

What causes blood in urine?

NIDDK lists infections, stones, an enlarged prostate, injury, vigorous exercise and, less often, cancers, blood-clotting disorders and kidney disease.

Should I see a doctor for blood in my urine?

Yes. Even blood you cannot see is found only by a test, and a health professional is needed to find the cause.

General information only, not medical or legal advice. If you have a health condition, take medicines or are pregnant, ask your doctor before drinking alcohol. Never drink and drive.

Sources

  1. NIDDK (NIH): Hematuria (Blood in the Urine), read 4 Nov 2026
Written by A to Z Alcohol Editorial Team · Published Oct 21, 2024 · Updated Nov 4, 2026
About · How we verify this · Editorial policy · Corrections

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