Home Remedies for Kidney Health Kidneys form the major organs of the human body. They flush out the toxic materials from the blood. They also maintain the balance between the alkaline and acidic medium, regulates the fluid level of the body and releases the hormones, which are essential for building the bones, maintaining the blood pressure and having healthy red blood corpuscles. Kidney’s health deteriorates due to the deposition of the harmful chemicals, corrosive substances and toxic materials in them.