Metallic Taste
Kidney failure may lead to a chronic, changed taste sensation known as “metallic taste” or dysgeusia. Chemicals accumulate in the blood at the beginning to intermediate stages of renal disease, and these compounds have an adverse effect on appetite and taste. In addition, the accumulation of waste in the blood due to renal disease may disrupt typical healthy zinc levels and contribute to a metallic taste. The metallic flavor may become more noticeable as the condition advances. On the other hand, uremia is characterized by increased waste products in the blood due to impaired kidney function. Poor oral hygiene and a metallic aftertaste are also symptoms of uremia.
If a meal is perceived in metallic flavor, it is likely that patients will not choose healthier and bland options. It’s common for those with a metallic taste to alter their diet, adding more salt, spices, oil, or sugar in most dishes to cover the unpleasant flavor. This may increase the risk of developing diabetes, cardiovascular disease, and obesity. An increase in sugary and fermentable carbs may also raise the risk for oral health disorders and the prevalence of tooth decay. The increased complications can snowball into a more progressive kidney failure.
