Healthy Foods That May Be Harming Your Kidneys

13. Dark Chocolate: A Treat with a Hidden Mineral Load

While often hailed for its antioxidant and mood-boosting properties, dark chocolate is a surprising source of high potassium and phosphorus. The higher the cocoa content, the more of these minerals it contains. For individuals with kidney disease, a regular or large consumption of dark chocolate can contribute to dangerous levels of potassium. While it may be a healthier alternative to sugary sweets, it is not a "free" food for those with kidney concerns. It is best to enjoy dark chocolate in very small, infrequent portions, and to consider other low-potassium, low-phosphorus treats.

14. Processed Colas and Sodas: The Phosphoric Acid Problem

Many processed, dark-colored sodas contain added phosphoric acid to give them a tangy flavor and to act as a preservative. This form of phosphorus is highly absorbable by the body, placing a significant burden on the kidneys to filter it out. The high phosphorus content in these beverages can be particularly damaging to individuals with kidney disease, contributing to bone weakness and other complications. Opting for clear sodas, sparkling water, or unsweetened iced tea is a much safer choice to avoid this hidden source of a dangerous mineral.