The kidney is a vital organ in the human body that helps filter waste and excess fluids from the blood. Each person has two kidneys, located on either side of the spine, just below the rib cage. They play a crucial role in maintaining a healthy balance of minerals and electrolytes, which is essential for overall health. In addition to filtering blood, the kidneys also produce hormones that regulate blood pressure and stimulate the production of red blood cells. Keeping the kidneys healthy is important, as they help prevent conditions like kidney stones and kidney disease, which can lead to serious health issues.