From Healthline :
The kidneys are two bean-shaped organs that extract waste from blood, balance body fluids, form urine, and aid in other important functions of the body. They reside against the back muscles in the upper abdominal cavity. They sit opposite each other on either side of the spine.
To sustain life the human body require a filter. Many of the chemical processes in your body release toxic substances and waste into your bloodstream. If allowed to remain, these would cause serious problems for you, even death. They have to be continuously filtered out and removed. This filtering is one of the principal functions of your kidneys. Therefore take care of your kidneys; for it is the marvelous filter that keeps us alive!
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