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.
Other possible kidney cancer symptoms may include: 1  Flank pain - Pain on one side of the body between the upper abdomen and the back. 2  Abdominal Mass - a mass in the area of the kidneys discovered during an examination. 3  Anemia - a condition in which the number of red blood cells is below normal.  Fever - not due to cold or flu.
The early symptoms of chronic kidney disease are the same as for many other illnesses. These symptoms may be the only sign of a problem in the early stages. Symptoms may include: 1  Appetite loss. 2  General ill feeling and fatigue. 3  Headaches. 4  Itching (pruritus) and dry skin. 5  Nausea. 6  Weight loss without trying to lose weight.