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Why Does My Urine Smell Like Tuna? Causes, Diagnosis, and Treatment Guidelines for 2026

"Note: It is clinically crucial to distinguish between a fishy odor originating directly from the urinary tract and an odor originating from the vaginal canal or vulva, as these represent distinct anatomical systems and underlying medical pathologies. Noticing an unusual, pungent odor in your urine can be a jarring experience. If your urine smells distinctly of tuna or raw fish, it is a clear biochemical signal that your body is excreting specific chemical compounds, metabolic waste products, or bacterial byproducts. While occasionally linked to transient lifestyle factors like diet or dehydration, a persistent fishy urinary odor is often a cl..."

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