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).
Symptoms of kidney cancer. Symptoms of kidney cancer. Kidney cancer often doesnât cause symptoms until the tumor has already grown. The most common symptom of kidney cancer is blood in the urine, or hematuria. If the amount of blood is too small to see with the naked eye, your doctor can find it on a urine test.