More. 1  Oxygen Levels and Brain Function The brain consumes about 25 percent of a personâs oxygen intake, so proper brain function requires enough blood oxygen. 2  How Oxygen Affects the Heart The heart is a key player in making sure oxygenated blood travels to the organs and tissues that need it.
What are signs or symptoms of kidney cancer? Unfortunately, kidney cancer rarely causes visible signs or symptoms in its early stages. In the later stages, the most common sign of both renal cell and transitional cell cancers is blood in the urine (hematuria).
A number of symptoms may indicate a problem with your kidneys. These include. 1  high blood pressure. 2  blood in urine. 3  frequent urges to urinate. 4  difficulty beginning urination. 5  painful urination. 6  swelling in the hands and feet due to a buildup of fluids in the body.