The kidneys maintain the blood creatinine in a normal range. Creatinine has been found to be a fairly reliable indicator of kidney function. Elevated creatinine level signifies impaired kidney function or kidney disease.
If you feel nauseated, here are some tips: 1  Avoid foods that are hard to digest. 2  If the smell of hot food makes you feel ill, try eating cool or cold meals. 3  Eat six small meals each day instead of three large ones. 4  Do not lay down after eating. 5  Rest with your head higher than your feet.
Juices and soft drinks should be avoided. Eat as tolerated, but only light, bland foods, such as crackers or plain bread to begin with. If your nausea is chronic, you'll need to find a variety of vegetables and proteins that don't upset your stomach to maintain proper nutrition. Stay away from fried or greasy foods.