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Why Does Your Pee Smell Like Tuna? 2026 Medical Causes and Treatment Guide

"Urine is a critical bio-indicator of internal health, and shifts in its olfactory profile often signal metabolic changes or underlying infections. When urine consistently smells like tuna or rotting fish, it is rarely a result of simple dehydration. In 2026, clinical urology and metabolic research have identified several specific pathways—ranging from genetic enzymatic deficiencies to complex microbiome imbalances—that produce the volatile organic compound trimethylamine (TMA), which is responsible for this distinct "fishy" aroma. While occasional odor changes can be attributed to diet, persistent fishy-smelling urine requires a systematic di..."

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