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).
In many cases, people may have no early symptoms of kidney cancer. As the tumor grows larger, symptoms may appear. You may have one or more of these kidney cancer symptoms 1  : Blood in your urine. 2  A lump in your side or abdomen. 3  A loss of appetite. 4  A pain in your side that doesn't go away.5  Weight loss that occurs for no known reason. 6  Fever that lasts for weeks and isn't caused by a cold or other infection.7  Extreme fatigue. 8  Anemia.ou may have one or more of these kidney cancer symptoms 1  : Blood in your urine. 2  A lump in your side or abdomen. 3  A loss of appetite. 4  A pain in your side that doesn't go away.