The thirteenth-century accomplishments of Chinggis Khan in conquering a swath of the world from modern-day Korea to southern Russia and in invading deep into Europe, and the cultural achievements of his grandson, Khubilai Khan, in China are well-known in world history.
Extra fluid can be removed by kidneys to form urine.When kidneys shut down, the fluids will build up in body, thus leading to swelling. It often cause retention of fluids in legs and feet. In serious case, the lung may be flooded with water. Swelling is one of common symptoms of kidney shutdown.
The kidneys filter waste products out of blood and get rid of them in the urine, while keeping substances the body needs. The kidneys also release hormones that regulate blood pressure, stimulate red blood cell formation and help the body regulate the calcium stores that are required to keep bones strong.