Your kidneys are bean-shaped organs that perform many important functions.
They’re in charge of filtering blood, removing waste through urine, producing hormones, balancing minerals and maintaining fluid balance.
There are many risk factors for kidney disease. The most common are uncontrolled diabetes and high blood pressure.
Alcoholism, heart disease, hepatitis C virus and HIV infection are also causes (1).
When the kidneys become damaged and are unable to function properly, fluid can build up in the body and waste can accumulate in the blood.
However, avoiding or limiting certain foods in your diet may help decrease the accumulation of waste products in the blood, improve kidney function and prevent further damage (2).