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When kidney function becomes severely impaired, waste products may build up in the bloodstream and affect taste.
Some people describe:
* a metallic taste
* food tasting different
* reduced enjoyment of meals
Dental problems, medications, infections, and other conditions can cause similar changes.
## 15. Bad Breath That Seems Unusual
Advanced kidney dysfunction can sometimes alter breath odor.
However, bad breath is much more commonly caused by:
* dental problems
* gum disease
* dry mouth
* sinus issues
* certain foods
It should not be used alone as a sign of kidney disease.
## 16. Loss of Appetite
