The kidneys are one of the four organs in our body responsible for eliminating waste products and built up toxins. When kidney stones, heavy metal build up, and solvents get into our bodies they compromise our kidneys. As do things like pesticides and aflatoxins. One of the most beneficial things we can do to prevent renal failure is a thorough body cleanse. Symptoms of kidney problems include abdominal pain, appetite loss, back pain, chills, fever, bloating, nausea, urinary urgency and vomiting.