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.
1 Avoid any foods that cause stomach gas and distention. These foods include corn, dried beans, peas, lentils, onions, broccoli, cauliflower and any food from the cabbage family.  Avoid carbonated drinks, alcohol, citrus and tomato products.