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.
The most common cause of nausea after eating is of course owing to the fact that your body is unwilling to accept, accommodate, digest and excrete the food that you have just taken in. Vomiting and nausea are both, ways of the body to tell you that the food that has been sent in is not welcome.