Harvard Health Letter

Red, brown, green: Urine colors and what they might mean

Most of the time, urine is a pale yellow color. Occasionally, though, urine turns a very different color. Urine can change color for harmless reasons having to do with the foods you've eaten or medications you're taking. Although an abnormal urine color can be an early sign of a serious medical condition. To be on the safe side, it should be discussed with a doctor or another clinician.
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