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3. Metallic taste in mouth

When the kidneys are not functioning properly, they are unable to remove toxins and waste matter from the body. This leads to a buildup of toxins in the system including urea, a nitrogenous waste product produced by the liver and eliminated by the kidneys. The buildup of toxins such as these can cause an overflow into the intestinal tract, which then leads to bacterial overgrowth. This is why a person with acute renal failure or renal disease may have a metallic taste in the mouth and bad breath.

Acute Renal Failure mouth taste

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